Class XI and XII (Biology ----Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Write the function of Na+-pump.
[B] Write the names of hormones involved in menstruation.
[C] Write the name of pigment that causes pale yellow colored urine.
[D] Define Rh factor.
[E] In what form is oxygen transported to tissues?
[F] Write the name and nature of 5th cranial nerve.
[G] Write one advantage and one limitation of using condom by males.
[H] Which vitamin is involved in synthesis of red blood corpuscles (RBCs)?
[I] Which disease is deadly found in poultry in Nepal?
[J] Define vaccine with examples.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the structure and functions of adipose tissue.
[B] Differentiate between S-shaped and J-shaped curves.
[C] Explain the process of coelom formation in Rana tigrina.
[D] Give an account on amniocentesis.
[E] Describe the significance of fish rearing.
[F] What are heart sounds? How are they produced?
[G] Why Nepal is being a hotspot of drug addicted people?
[3] Give an account of the structure and functions of human eye. [8]
OR
Explain the etiology, modes of transmission, symptoms and pathogenicity, and preventive measures of typhoid. [8]
[4] Give an account of structure and function of female reproductive system. [7.5]
Section ‘B’ (Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Write the names of protein-digesting enzymes.
[B] Which diseases are caused due to the hypersecretion of thyroid hormones?
[C] Define glans penis.
[D] A man of blood group ‘O’ marries a woman of blood group ‘O’. Which blood groups are not possible in their babies?
[E] Why respiratory quotient (RQ) of glucose is always 1?
[F] Write the names and numbers of spinal nerves present in human.
[G] Write one advantage and one limitation of using birth control pills by females.
[H] Write the symptoms of obesity.
[I] Write any two endemic fish of Nepal.
[J] Define antigen with examples.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the structure of a compact bone.
[B] Explain the causes of high infant mortality in Nepal.
[C] Explain the process of blastulation in Rana tigrina.
[D] Give an account on test tube baby.
[E] Describe the structure of lungs of human.
[F] Draw a well-labeled diagram of internal structure of human heart.
[G] Why pancreas is a heterocrine gland?
[3] Give an account of the structure and functions of human ear. [8] OR
Explain the etiology, and preventive measures of cancer. [8]
[4] Give an account of structure and function of human kidney. [7.5]
Section ‘B’ (Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
a. What is the average weight of human heart?
b. What is organ of corti?
c. What is micturition?
d. Why Rh -ve mother should not give birth of more than one baby?
e. What is the function of Leydig cells?
f. Define Bohr Effect.
g. Name the hormone that regulates water absorption from kidney.
h. Why calendar method of family planning is not always secure?
i. Name the hormones secreted by pituitary gland.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
a. Describe the types of muscular tissues.
b. Mention the applications of biotechnology.
c. Give an account on tissue and organ transplantation.
d. What are the differences between parasympathetic and sympathetic nerves?
e. Discuss the structure and functions of liver of man.
f. Explain the mechanisms of heart beat conduction.
g. Explain the method of urine formation in kidney.
[3] Describe the development of frog from the zygote up to the formation of coelom. [8]
OR
Describe the causative agent, symptoms and preventive measures of the non-communicable disease. [8]
[4] Give an account of structure and function of human brain. [7.5]
Section ‘B’ (Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Differentiate between keratinized and non-keratinized tissue.
[B] What are the functions of mitochondria and centrioles in sperm?
[C] How can the symptoms of kala-azar and typhoid be distinguished?
[D] What are the risk factors of breast cancer?
[E] Give one limitation of amniocentesis.
[F] Why mastication of bitten rice results in sweetness?
[G] Write one advantage and one limitation of male vasectomy.
[H] Define electrocardiogram (ECG)?
[I] Prove that blood group of human represents an example of multiple allele.
[J] Define gynecomastia.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the structure and functions of simple epithelium.
[B] Explain the causes of population explosion in some countries.
[C] Explain the process of gastrulation in Rana tigrina.
[D] Give an account on vaccines.
[E] Give a well-labeled diagram of L.S. of human eye.
[F] Explain the working mechanisms of human heart.
[G] Describe the structure and function of testis of man.
[3] Give an account of the structure and functions of human alimentary canal. [8]
OR
Explain the causes, effects, and preventive measures of smoking. [8]
[4] Give an account of structure and function of human respiratory system. [7.5]
Section ‘B’ (Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Why pregnant women are prescribed for iron pills?
[B] Write 2 effects of malnutrition.
[C] Write the names of any 2 hormones that control digestion.
[D] Define tidal volume.
[E] Differentiate between tricuspid and bicuspid valves.
[F] A man of ‘AB’ blood group marries and a woman of ‘AB’ blood group. Which blood groups are not possible in their babies?
[G] Write one advantage and one limitation of using IUD as family planning method.
[H] Write the name of any 2 osmoregulatory organs in human.
[I] What is the primary symptom in a man who has medulla injury in an accident? Why?
[J] Differentiate between spermatogenesis and oogenesis.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[H] Give an account on ascariasis.
[I] How alcoholic addiction affects the life in city areas?
[J] Explain the consequences of overpopulation.
[K] Describe the structure of hepatic portal system of man.
[L] Give a well-labeled diagram of human ear.
[M] Describe the structure and functions of suprarenal glands.
[N] Explain the mechanisms of conduction of nerve impulse.
[3] Give an account of the structure and functions of digestive glands of man. [8]
OR
Explain physiology of aerobic respiration in man in detail. [8]
[4] Describe etiology, modes of transmission and symptoms and pathogenicity of a major pandemic killer in Nepal. [7.5]
Section ‘B’ (Zoology)
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Name the chemicals that give the color and odor to the urine?
[B] Write the name of disease caused by problems in rods and cons.
[C] Which hormone is secreted by placenta after zygote formation?
[D] Define acrosome.
[E] Differentiate between medullated and non-medullated nerve fiber.
[F] Why a man of ‘A’ blood group cannot say that a baby (‘O’ blood group) born from his wife (‘B’) may be belonged to him?
[G] Which family planning method is the best for the newly married couple? Why?
[H] Differentiate between aerobic and anaerobic respiration.
[I] Define acrosome.
[J] Differentiate between fibrous and elastic cartilage.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Give an account of external genitalia of female.
[B] How drug addiction affects the life in city areas?
[C] Why poultry farming is a crucial occupation in Nepal?
[D] Describe the structure of venous system of man.
[E] Give a well-labeled diagram of human brain.
[F] Describe the structure and functions of thyroid glands.
[G] Explain the mechanisms of conduction of impulse along a synapse.
[3] Define digestion. Explain this process in man. [8]
OR
Define excretion. Explain urine formation process in man. [8]
[4] Describe etiology, modes of transmission and symptoms and pathogenicity of a vector-borne disease in Nepal. [7.5]
Class-XI BIOLOGY
SET @1
[5] Answer any 7 very short questions. [1X7 = 7]
[K] Define physiology and ichthyology.
[L] Who is considered as ‘father of medicine’?
[M] Write the scientific name of any two endangered animals in Chitwan National Park.
[N] Classify Cyclospora cayetanensis.
[O] Write zoological name of tapeworm and liverfluke.
[P] Define primordial soup.
[Q] What are sporozoa?
[R] Write the types of teeth in Rana tigrina.
[S] Define water vascular system.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Discuss the objectives of studying biology.
[B] How does the study of morphology and anatomy prove the evidences of evolution?
[C] Enlist the characteristic features of volant adaptation.
[D] Differentiate between chordata and non-chordata.
[E] Explain the consequences of overuse of pesticide in agriculture.
[F] Draw a well labeled diagram of venous system of Rana tigrina.
[G] Explain the theory of abiogenesis.
[7] Describe the structure and function of heart of Rana tigrina. [8]
OR
Explain the process of conjugation in Paramecium. [8]
[8] Explain Darwinism in detail. [7.5]
SET @2
[5] Answer any 7 very short questions. [1X7 = 7]
[K] Define anatomy and parazoology.
[L] Who is considered as ‘father of biology, zoology and embryology’?
[M] Write the scientific name of any two endangered animals in Nepal.
[N] Classify Trichomonas vaginalis.
[O] Write the scientific name of silverfish and starfish.
[P] Define coacervate.
[Q] What are rhizopoda?
[R] Why esophagus is very short in Rana tigrina?
[S] Characters of Porifera.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the tools and techniques that are helpful in studying cell and molecular biology.
[B] How does study of bridge organisms prove the evidences of evolution?
[C] Enlist the characteristic features of arboreal adaptation.
[D] Describe the causes of wildlife depletion in Nepal.
[E] Differentiate between millipede and centipede.
[F] Describe the consequences of green house effects.
[G] Differentiate between Agnatha and Gnathostomata.
[7] Give Describe the structure of male reproductive system of Rana tigrina. [8]
OR
Explain the lifecycle of Plasmodium vivax in mosquito. [8]
[8] Explain Neo-Darwinism in detail. [7.5]
SET@ 3
[5] Answer any 7 very short questions. [1X7 = 7]
j. Define morphology and parasitology.
k. Who is known as ‘father of immunology’?
l. Write the scientific name of the most charismatic cat found in hilly region of Nepal.
m. Classify Paramecium.
n. Write the scientific name of jelly fish and cat fish.
o. How can you prove that man is closely related to apes than monkeys?
p. Write the functions of trichocysts.
q. Differentiate between schizocoelom and pseudocoelom.
r. Characters of Mollusca.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] ‘A biologist has a wide choice of career’. Justify.
[B] Describe the significance of binary fission of Paramecium.
[C] What is malaria? Enlist the method of its prevention.
[D] Differentiate between the Ape and Human.
[E] Enlist the characteristic features of aquatic adaptation.
[F] Describe the preventive measures of wildlife depletion.
[G] Differentiate between trematoda and cestoda.
[7] Describe the structure and functions of portal system of Rana tigrina. [8]
OR
Describe the structure and functions of male reproductive system of Pheretima posthuma. [8]
[8] Explain Lamarckism. [7.5]
SET@ 4
[5] Answer any 7 very short questions. [1X7 = 7]
[K] Define taxonomy and entomology.
[L] Who is considered as ‘father of microbiology’?
[M] Write the scientific name of one reptilian and one amphibian species found in Chitwan National Park.
[N] Classify Giardia lamblia.
[O] Write the scientific name of pigeon and ostrich.
[P] Birds are glorified reptiles. Prove this statement.
[Q] What is pellicle?
[R] Characters of Crustacea.
[S] Define typhlosole.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Explain the relation of biology with other sciences.
[B] Differentiate between macronucleus and macronucleus of Paramecium.
[C] Explain the process of haemozoin formation in human RBCs.
[D] Enlist the characteristic features of cursorial adaptation.
[E] Describe the significance of wildlife.
[F] Why pancreas is a heterogenous gland?
[G] How does embryology explain the evolutionary theory?
[H] Write the name of symmetry found in phylum cnidarians and echinoderms.
[7] Describe the structure and function of female reproductive system of Rana tigrina. [8]
OR
Describe the excretory system of Pheretima posthuma. [8]
[8] Explain the evolution of modern man via several ancestors. [7.5]
SET@ 5
[5] Answer any 7 very short questions. [1X7 = 7]
[K] Define immunology and herpetology.
[L] Who is considered as ‘father of taxonomy’?
[M] Write the scientific name of one Pisces and one aves species in Chitwan National Nepal.
[N] Classify man zoologically.
[O] Write the scientific name of crab and cockroach.
[P] Define atavism with example.
[Q] Name the boring organs of Pheretima posthuma.
[R] Differentiate between diploblastic and triploblastic animals.
[S] Characters of Arachnida.
[T] Define peristalsis.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the importances of biodiversity.
[B] Describe the significance of conjugation in Paramecium.
[C] Explain the RBC schizogony of Plasmodium vivax.
[D] Describe the Miller and Urey experiment of origin of life.
[E] Enlist the characteristic features of aquatic adaptation.
[F] Explain about fish migration.
[G] Draw a well labeled diagram of arterial system of Rana tigrina.
[7] Describe the structure and function of digestive system of Rana tigrina. [8]
OR
Describe the female reproductive system of Pheretima posthuma. [8]
[8] Explain the causes, effects, and preventive measures of air pollution. [7.5]
SET@ 6
[5] Answer any 7 very short questions. [1X7 = 7]
[A] Define saurology and histology.
[B] Who is known as ‘father of genetics’?
[C] Write the scientific name of each wild animal found in terai and hill in Nepal.
[D] Classify Labeo rohita.
[E] Write the scientific name of body louse and king cobra.
[F] Define ‘recapitulation theory’.
[G] Why pulmonary veins do not have valves?
[H] Differentiate between hemoglobin and hemocyanin.
[I] Characters of Insecta.
[J] Define ovum.
[6] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the misuse of biology.
[B] Explain liver schizogony of Plasmodium vivax.
[C] Explain the binary fission in Paramecium.
[D] Differentiate between the old world monkey and new world monkey.
[E] Enlist the characteristic features of fossorial adaptation.
[F] Explain about bird migration.
[G] Explain the cocoon formation process in Pheretima posthuma.
[7] Describe the digestive system of Pheretima posthuma. [8]
OR
Describe the respiratory system of Rana tigrina. [8]
[8] Explain the causes, effects, and preventive measures of predominant pollution in city areas in Nepal. [7.5]
SET@ 7
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Classify liver fluke.
[B] What is adaptational feature of apes.
[C] List the classes of the phylum Porifera.
[D] What is sinus venosus?
[E] Write down 2 main characters of snails.
[F] What is natural selection?
[G] Differentiate between anadromous migration and catadromous migration in fishes.
[H] What was the energy source in Miller-Urey experiment?
[I] Define homologous organ with example.
[J] Write the name of one sporozoan parasite found in intestine of humans.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] What is extinction? What are the causes of extinction?
[B] Draw well labelled diagram of alimentary canal of frog.
[C] Describe in brief the female reproductive organ of female earth worm.
[D] Discuss the gamogony of Plasmodium vivax.
[E] Explain the biochemical origin of life.
[F] Explain the asexual reproduction of paramecium.
[G] Explain the renal portal system found in frog.
[3] What is reproduction? Describe female reproductive organ of Rana tigrina. [8]
OR
Define digestion. Describe the structure and functions of digestive system of Pheretima posthuma. [8]
[4] Explain the causes, effects, and preventive measures of predominant pollution in industrial areas in Nepal. [7.5]
SET@8
[1] Give very short answers of the followings (any seven) 1x7=7
[A] Give the scientific name of tapeworm and wall lizard.
[B] Write down the conditions of primitive atmosphere.
[C] Define canal system.
[D] Define fossil.
[E] How sound is produced in Rana tigrina?
[F] Give two example of vestigial organ.
[G] What is reflex arc?
[H] Differentiate between ostia and oscula.
[I] Define gastrovascular cavity.
[J] Name the muscles that control the setae of earthworm.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Explain arboreal adaptation among reptiles.
[B] Give an account on Australopithecus.
[C] Represent diagrammatically the process of conjugation in Paramecium .
[D] Write in brief the erythrocytic cycle of Plasmodium.
[E] Differentiate between protista and animalia kingdoms.
[F] Differentiate between chondrichthyes and oesteichthyes fish.
[G] Give the adaptational modifications found in Calotes versicolor and Rhacophorus.
[3] Describe the reproductive organ of earthworm. [7.5]
Or
Describe the internal structure of heart in frog and give its working mechanism.
[4] Write an Essay on Lamarckism. [8]
SET@ 9
[1] Give very short answers of the followings (any seven) 1x7=7
[A] Give scientific names of any two endangered mammals of Nepal.
[B] Define Osteology and Gynecology.
[C] Which technique is used to know the age of fossils?
[D] Define chemotaxis with examples.
[E] Write the functions of tentacles in coelenterates.
[F] What do you mean by the word Arthropoda?
[G] Write down the name of the pigment found in skin and blood of Pheretima posthuma.
[H] What is catadromous migration?
[I] What is serological test?
[J] What is torsion? Give one example of animal which shows torsion.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Why are you studying biology in class XI of HSEB course?
[B] Give the characteristic feature of class Aves.
[C] Draw a neat and labeled diagram of Paramecium.
[D] Give the functions of skin of earthworm.
[E] How does cocoon formation takes place in earthworm?
[F] Describe T.S. of the testis of frog with neat labeled diagram.
[G] Enlist the characters of Annelida.
[3] Give an account of life cycle of Plasmodium vivax in man. [7.5]
OR
Discuss the reproductive system of Frog.
[4] What is organic evolution? Explain evolution of man starting from reptilian ancestor. [8]
................................................
SET @1
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define physiology and ichthyology.
[B] Who is considered as ‘father of medicine’?
[C] Write the scientific name of any two endangered animals in Chitwan National Park.
[D] Classify Cyclospora cayetanensis.
[E] Write zoological name of tapeworm and liverfluke.
[F] Define primordial soup.
[G] What are sporozoa?
[H] Write the types of teeth in Rana tigrina.
[I] Define water vascular system.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Discuss the objectives of studying biology.
[B] How does the study of morphology and anatomy prove the evidences of evolution?
[C] Enlist the characteristic features of volant adaptation.
[D] Differentiate between chordata and non-chordata.
[E] Explain the consequences of overuse of pesticide in agriculture.
[F] Draw a well labeled diagram of venous system of Rana tigrina.
[G] Explain the theory of abiogenesis.
[3] Describe the structure and function of heart of Rana tigrina. [8]
OR
Explain the process of conjugation in Paramecium. [8]
[4] Explain Darwinism in detail. [7.5]
SET @2
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define anatomy and parazoology.
[B] Who is considered as ‘father of biology, zoology and embryology’?
[C] Write the scientific name of any two endangered animals in Nepal.
[D] Classify Trichomonas vaginalis.
[E] Write the scientific name of silverfish and starfish.
[F] Define coacervate.
[G] What are rhizopoda?
[H] Why esophagus is very short in Rana tigrina?
[I] Characters of Porifera.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the tools and techniques that are helpful in studying cell and molecular biology.
[B] How does study of bridge organisms prove the evidences of evolution?
[C] Enlist the characteristic features of arboreal adaptation.
[D] Describe the causes of wildlife depletion in Nepal.
[E] Differentiate between millipede and centipede.
[F] Describe the consequences of green house effects.
[G] Differentiate between Agnatha and Gnathostomata.
[3] Give Describe the structure of male reproductive system of Rana tigrina. [8]
OR
Explain the lifecycle of Plasmodium vivax in mosquito. [8]
[4] Explain Neo-Darwinism in detail. [7.5]
SET@ 3
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define morphology and parasitology.
[B] Who is known as ‘father of immunology’?
[C] Write the scientific name of the most charismatic cat found in hilly region of Nepal.
[D] Classify Paramecium.
[E] Write the scientific name of jelly fish and cat fish.
[F] How can you prove that man is closely related to apes than monkeys?
[G] Write the functions of trichocysts.
[H] Differentiate between schizocoelom and pseudocoelom.
[I] Characters of Mollusca.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] ‘A biologist has a wide choice of career’. Justify.
[B] Describe the significance of binary fission of Paramecium.
[C] What is malaria? Enlist the method of its prevention.
[D] Differentiate between the Ape and Human.
[E] Enlist the characteristic features of aquatic adaptation.
[F] Describe the preventive measures of wildlife depletion.
[G] Differentiate between trematoda and cestoda.
[3] Describe the structure and functions of portal system of Rana tigrina. [8]
OR
Describe the structure and functions of male reproductive system of Pheretima posthuma. [8]
[4] Explain Lamarckism. [7.5]
SET@ 4
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define taxonomy and entomology.
[B] Who is considered as ‘father of microbiology’?
[C] Write the scientific name of one reptilian and one amphibian species found in Chitwan National Park.
[D] Classify Giardia lamblia.
[E] Write the scientific name of pigeon and ostrich.
[F] Birds are glorified reptiles. Prove this statement.
[G] What is pellicle?
[H] Characters of Crustacea.
[I] Define typhlosole.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Explain the relation of biology with other sciences.
[B] Differentiate between macronucleus and macronucleus of Paramecium.
[C] Explain the process of haemozoin formation in human RBCs.
[D] Enlist the characteristic features of cursorial adaptation.
[E] Describe the significance of wildlife.
[F] Why pancreas is a heterogenous gland?
[G] How does embryology explain the evolutionary theory?
[H] Write the name of symmetry found in phylum cnidarians and echinoderms.
[3] Describe the structure and function of female reproductive system of Rana tigrina. [8]
OR
Describe the excretory system of Pheretima posthuma. [8]
[4] Explain the evolution of modern man via several ancestors. [7.5]
SET@ 5
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define immunology and herpetology.
[B] Who is considered as ‘father of taxonomy’?
[C] Write the scientific name of one Pisces and one aves species in Chitwan National Nepal.
[D] Classify man zoologically.
[E] Write the scientific name of crab and cockroach.
[F] Define atavism with example.
[G] Name the boring organs of Pheretima posthuma.
[H] Differentiate between diploblastic and triploblastic animals.
[I] Characters of Arachnida.
[J] Define peristalsis.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the importances of biodiversity.
[B] Describe the significance of conjugation in Paramecium.
[C] Explain the RBC schizogony of Plasmodium vivax.
[D] Describe the Miller and Urey experiment of origin of life.
[E] Enlist the characteristic features of aquatic adaptation.
[F] Explain about fish migration.
[G] Draw a well labeled diagram of arterial system of Rana tigrina.
[3] Describe the structure and function of digestive system of Rana tigrina. [8]
OR
Describe the female reproductive system of Pheretima posthuma. [8]
[4] Explain the causes, effects, and preventive measures of air pollution. [7.5]
SET@ 6
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Define saurology and histology.
[B] Who is known as ‘father of genetics’?
[C] Write the scientific name of each wild animal found in terai and hill in Nepal.
[D] Classify Labeo rohita.
[E] Write the scientific name of body louse and king cobra.
[F] Define ‘recapitulation theory’.
[G] Why pulmonary veins do not have valves?
[H] Differentiate between hemoglobin and hemocyanin.
[I] Characters of Insecta.
[J] Define ovum.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Describe the misuse of biology.
[B] Explain liver schizogony of Plasmodium vivax.
[C] Explain the binary fission in Paramecium.
[D] Differentiate between the old world monkey and new world monkey.
[E] Enlist the characteristic features of fossorial adaptation.
[F] Explain about bird migration.
[G] Explain the cocoon formation process in Pheretima posthuma.
[3] Describe the digestive system of Pheretima posthuma. [8]
OR
Describe the respiratory system of Rana tigrina. [8]
[4] Explain the causes, effects, and preventive measures of predominant pollution in city areas in Nepal. [7.5]
SET@ 7
[1] Answer any 7 very short questions. [1X7 = 7]
[A] Classify liver fluke.
[B] What is adaptational feature of apes.
[C] List the classes of the phylum Porifera.
[D] What is sinus venosus?
[E] Write down 2 main characters of snails.
[F] What is natural selection?
[G] Differentiate between anadromous migration and catadromous migration in fishes.
[H] What was the energy source in Miller-Urey experiment?
[I] Define homologous organ with example.
[J] Write the name of one sporozoan parasite found in intestine of humans.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] What is extinction? What are the causes of extinction?
[B] Draw well labelled diagram of alimentary canal of frog.
[C] Describe in brief the female reproductive organ of female earth worm.
[D] Discuss the gamogony of Plasmodium vivax.
[E] Explain the biochemical origin of life.
[F] Explain the asexual reproduction of paramecium.
[G] Explain the renal portal system found in frog.
[3] What is reproduction? Describe female reproductive organ of Rana tigrina. [8]
OR
Define digestion. Describe the structure and functions of digestive system of Pheretima posthuma. [8]
[4] Explain the causes, effects, and preventive measures of predominant pollution in industrial areas in Nepal. [7.5]
SET@8
[1] Give very short answers of the followings (any seven) 1x7=7
[A] Give the scientific name of tapeworm and wall lizard.
[B] Write down the conditions of primitive atmosphere.
[C] Define canal system.
[D] Define fossil.
[E] How sound is produced in Rana tigrina?
[F] Give two example of vestigial organ.
[G] What is reflex arc?
[H] Differentiate between ostia and oscula.
[I] Define gastrovascular cavity.
[J] Name the muscles that control the setae of earthworm.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Explain arboreal adaptation among reptiles.
[B] Give an account on Australopithecus.
[C] Represent diagrammatically the process of conjugation in Paramecium .
[D] Write in brief the erythrocytic cycle of Plasmodium.
[E] Differentiate between protista and animalia kingdoms.
[F] Differentiate between chondrichthyes and oesteichthyes fish.
[G] Give the adaptational modifications found in Calotes versicolor and Rhacophorus.
[3] Describe the reproductive organ of earthworm. [7.5]
Or
Describe the internal structure of heart in frog and give its working mechanism.
Or
Describe the internal structure of heart in frog and give its working mechanism.
[4] Write an Essay on Lamarckism. [8]
SET@ 9
SET@ 9
[1] Give very short answers of the followings (any seven) 1x7=7
[A] Give scientific names of any two endangered mammals of Nepal.
[B] Define Osteology and Gynecology.
[C] Which technique is used to know the age of fossils?
[D] Define chemotaxis with examples.
[E] Write the functions of tentacles in coelenterates.
[F] What do you mean by the word Arthropoda?
[G] Write down the name of the pigment found in skin and blood of Pheretima posthuma.
[H] What is catadromous migration?
[I] What is serological test?
[J] What is torsion? Give one example of animal which shows torsion.
[2] Answer any 5 questions in brief. [3X5 = 15 ]
[A] Why are you studying biology in class XI of HSEB course?
[B] Give the characteristic feature of class Aves.
[C] Draw a neat and labeled diagram of Paramecium.
[D] Give the functions of skin of earthworm.
[E] How does cocoon formation takes place in earthworm?
[F] Describe T.S. of the testis of frog with neat labeled diagram.
[G] Enlist the characters of Annelida.
[3] Give an account of life cycle of Plasmodium vivax in man. [7.5]
OR
Discuss the reproductive system of Frog.
OR
Discuss the reproductive system of Frog.
[4] What is organic evolution? Explain evolution of man starting from reptilian ancestor. [8]
2 comments:
Very nice sir. It is helpful for 11 and 12 class students for hseb.thank u sir
Thank you very much.
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