- The first transgenic animal for food production is
(a) ALV-resistant chicken (b) Tracy
(c) Rainbow trout (d) Transgenic salmon.
- Which is not a method of controlling solid wastes?
(a) Composting (b) Pyrolysis
(c) Sludge burning (d) Cyclone collectors
- Large quantities of monoclonal antibodies are produced from
(a) B-cells (b) myeloma
(c) hybridoma (d) T-lymphocytes.
- According to Westergren method, erythrocyte sedimentation rate
in male is (i) in 1st hour and in female it is (ii) in 1st hour.
(a) (i) 0 – 4 mm (ii) 0 – 7 mm
(b) (i) 0 – 5 mm (ii) 0 – 7 mm
(c) (i) 0.5 – 1.5 mm (ii) 0.7 – 1 mm
(d) (i) 0 – 7 mm (ii) 0 – 4 mm
- Duct of Rivinus is associated with
(a) sublingual glands (b) parotid glands
(c) submandibular glands (d) gastric glands.
- Functional residual capacity includes
(a) residual volume and expiratory reserve volume
(b) inspiratory reserve volume and residual volume
(c) tidal volume and expiratory reserve volume
(d) inspiratory reserve volume and expiratory reserve volume.
- Which one is incorrect about sexual reproduction in fungi?
(a) In gametangial contact male gamete is transferred to the
oogonium through a fertilisation tube.
(b) Male and female gametangia fuse directly in gametangial
copulation.
(c) Zygospore is formed in somatogamy.
(d) Isogamous or heterogamous fusion occurs in planogametic
copulation.
- Select the correct statement from the following.
(a) Chl. a and b absorb maximum light in red wavelengths only.
(b) Photosynthetically active radiation is ranged between 300-700 nm.
(c) Absorption spectrum is studied by spectrophotometer.
(d) The first action spectrum was studied by Emerson by using a
brown algae.
Directions : In the following questions (41-60), a statement of assertion is
followed by a statement of reason. Mark the correct choice as :
(a) If both assertion and reason are true and reason is the correct
explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct
explanation of assertion.
(c) If assertion is true but reason is false.
(d) If both assertion and reason are false.
- Assertion : Papaya is a dioecious plant.
Reason : In papaya, both male and female flowers are borne on
the same plant.
- Assertion : The middle piece is called as power house of the sperm.
Reason : In the middle piece of sperm, numerous mitochondria
coiled round the axial filament are present providing energy for the
movement of the sperm.
- Assertion : Meiosis increases the chance of genetic variability in
the population of a species.
Reason : Variability is important with respect to evolution.
- Assertion : Decapitation with widely used in tea plantation.
Reason : Decapitation usually promotes the growth of apical buds.
- Assertion : All sporozoans are endoparasites.
Reason : Sexual and asexual phases of life cycle occur in one or
two different hosts.
- Assertion : Cyathea is called tree fern.
Reason : Cyathea possesses with upright aerial stem.
- Assertion : UAA, UAG and UGA terminate protein synthesis.
Reason : UAA, UAG and UGA are recognised by protein synthesis factors.
- Assertion : ADH reduces the volume of urine.
Reason : ADH facilitates reabsorption of water by the distal part
of nephrons.
- Assertion : Fever is second line of body defence.
Reason : Mild fever activates phagocytes and inhibits the growth
of microbes.
- Assertion : Cyclosporine is a good immunosuppressant.
Reason : Cyclosporine appears to act at an early stage in the
antigen receptor induced differentiation of T cells and blocks their
activation.
- Assertion : Pectoral fins of sharks and flippers of dolphins are
analogous organs.
Reason : Analogous organs have the same fundamental structures
but are different in functions.
- Assertion : There is no involvement of microorganisms in primary
treatment of sewage water.
Reason : Decomposition of organic matter occurs in secondary
treatment.
- Assertion : Both PS I and PS II is involved in cyclic photophos-
phorylation.
Reason : In cyclic photophosphorylation, the electron moves from
PS II to PS I.
- Assertion : Herbivores are known as key industry animals.
Reason : Herbivores convert plant matter into animal matter.
- Assertion : Xylem sap contains mineral salts.
Reason : Salt uptake from soil occurs against concentration gradient.
- Assertion : Calcitonin restores the normal concentration of calcium
ions in the blood.
Reason : Calcitonin reduces the mobilisation of calcium ions from
the bones when the concentration of calcium ions rises in the
blood plasma.
- Assertion : Nodes of Ranvier are not present in non-myelinated
nerve fibres.
Reason : Nissl’s bodies are absent in non-myelinated nerve fibres.
- Assertion : Bees form a well-organised insect society.
Reason : A division of labour is seen in their society.
- Assertion : Fermentation is both intra-and extracellular process.
Reason : Fermentation is a type of respiration which does not
require oxygen.
- Assertion : Population growth rate is also called birth rate.
Reason : Population growth rate can never be negative.
ANSWER KEY
- (b) 2. (a) 3. (c) 4. (b) 5. (a)
- (b) 7. (d) 8. (a) 9. (c) 10. (c)
- (c) 12. (d) 13. (c) 14. (c) 15. (c)
- (a) 17. (b) 18. (b) 19. (d) 20. (b)
- (c) 22. (c) 23. (b) 24. (a) 25. (c)
- (c) 27. (b) 28. (b) 29. (a) 30. (c)
- (a) 32. (c) 33. (d) 34. (d) 35. (c)
- (b) 37. (a) 38. (a) 39. (c) 40. (c)
- (c) 42. (a) 43. (b) 44. (c) 45. (a)
- (a) 47. (c) 48. (a) 49. (a) 50. (a)
- (c) 52. (b) 53. (d) 54. (c) 55. (b)
- (a) 57. (c) 58. (a) 59. (b) 60. (d)
