RRB Group D - General Biology Set 2 1000+ MCQ [Solved] PDF Download

1. Injection of insulin causes
A. increase in glucose in blood
B. decrease in glucose in blood
C. increase in blood pressure
D. decrease in blood pressure
Answer : B

2. The age of a tree can be determined by
A. counting the number of annual rings
B. thickness of the bark
C. the bulk of the tree
D. the number of leaves
Answer : A

3. Vivipary is defined as germination
A. during storage
B. within the fruit
C. with cotyledons coming out of soil
D. with cotyledons remaining inside the soil
Answer : B

4. Blood clot Inside blood vessels is prevented by
A. heparin
B. fibrinogen
C. thrombin
D. prothrombin
Answer : A

5. It Is not advisable to sleep under a tree at night because of release of
A. oxygen in a lesser quantity than the required levels
B. oxygen in large amounts
C. carbon monoxide
D. carbon dioxide
Answer : D

6. Egg laying animals are referred to as
A. viviparous
B. oviparous
C. ovoviviparous
D. vegetative
Answer : B

7. A few infections like sore throat, whooping cough and tuberculosis are carried through the respiratory system. Which among the following is caused by bacteria while passing through the respiratory tract?
A. diphtheria
B. dysentery
C. jaundice
D. typhoid
Answer : A

8. Chromosome theory of inheritance was propounded by
A. Sutton and Boveri
B. Mendel
C. Muller
D. Beadle and Tatum
Answer : A

9. Aphids are
A. insect pests
B. fungal pests
C. bacterial pests
D. viral pests
Answer : A

10. The hormone that contains iodine is
A. Prolactin
B. Vasopressin
C. Thyroxine
D. Adrenalin
Answer : C

11. The part of the brain which is responsible for intelligence is
A. cerebrum
B. opthalmic
C. cochlea
D. semicircular canals
Answer : A

12. Biological control is to check growth of
A. plants
B. animals
C. weeds
D. one pest by another
Answer : D

13. Lymphocytes are manufactured by
A. bone marrow
B. spleen
C. liver
D. lymph nodes
Answer : B

14. Late blight of potato is caused by
A. Puccinia
B. Pennisetum
C. Phytophthora
D. Erysiphe
Answer : C

15. What is 'atavism'?
A. The genes which show numerous phenolypic effects
B. Reappearance of traits after several generations
C. Effects of mutation
D. Intermediate inheritance of genes
Answer : B

16. Mouth and foot diseases in cattle are caused by
A. Bacteria
B. Virus
C. Fungi
D. Pennicilium
Answer : B

17. The grouping o( blood is based on substances called
A. antibodies
B. antigens
C. antitoxin
D. enzymes
Answer : B

18. One of the following is often called the master gland. Which one is it?
A. Thymus
B. Islets of Langerhans
C. Pituitary
D. Thyroid
Answer : C

19. The science of improving the hereditary qualities of future generations of mankind is referred to as
A. genetics
B. eugenics
C. epigenesist
D. epistasis
Answer : B

20. Plant diseases are spread by
A. insects
B. man
C. wind
D. All the above
Answer : D

21. The mode of nutrition in which particulate food is devoured is
A. holozoic
B. holophytic
C. saprophytic
D. parasitic
Answer : A

22. Man has ____ pairs of salivary glands.
A. 3
B. 4
C. 6
D. 8
Answer : A

23. Malnutrition is due to
A. undernourishment
B. want of balanced diet
C. overfeeding
D. All the above
Answer : A

24. Spontaneous generation signifying the development of living organisms from non-living has been termed
A. Biogenesis
B. Abiogenesis
C. Cosmozoic
D. Catastrophism
Answer : B

25. Which one is a water-soluble vitamin?
A. A
B. C
C. D
D. E
Answer : B

26. The plant hormone which promotes ripening of fruits is
A. auxin
B. ethylene
C. gibberellin
D. cytokinin
Answer : B

27. Baldness is seen only in the males because
A. it is a male disorder
B. it is linked with male Y chromosome
C. it is influenced by male hormone
D. females cover it up with wigs
Answer : C

28. Blood platelets are found in
A. all vertebrates
B. all chordates
C. mammals only
D. birds and mammals
Answer : C

29. Which one of the ecosystems Is the largest in the world?
A. forests
B. rivers
C. deserts
D. oceans
Answer : D

30. Which hormone is secreted when there is a rise in the blood glucose level?
A. Glucagon
B. Insulin
C. Nor-adrenaline
D. Thyroxine
Answer : B

31. Nephantis is popularly called
A. coconut caterpillar
B. brown plant hopper
C. tobacco caterpillar
D. pulse beetle
Answer : A

32. Which of the following contains the highest protein content per gram?
A. Groundnut
B. Soyabean
C. Apple
D. Wheat
Answer : B

33. The influenza vaccine was discovered by
A. Salk
B. Khorana
C. Mittel
D. None of the above
Answer : A

34. The two German scientists who proposed the 'cell theory' were
A. Mendel and 'Darwin
B. Theodore Schwann and Matthias Schleiden
C. Virchow and Purkinje
D. porter and Palade
Answer : B

35. Geotropism is reaction of plants to the stimulus of
A. earth
B. light
C. sound
D. gravity
Answer : D

36. The radicle of the seeding always grows
A. towards the gravity
B. away from gravity
C. neutral to gravity
D. towards light
Answer : A

37. What are oncogenes?
A. a dominant gene
B. a set of genes which produce cancer
C. a gene present in the X-chromosomes causing haemophilia
D. a recessive gene
Answer : B

38. HIV causes
A. cancer
B. hepatitis
C. AIDS
D. Herpes
Answer : C

39. The disease Goitre is caused in persons who do not have in their diet sufficient
A. calcium
B. sodium
C. iodine
D. iron
Answer : C

40. Malarial parasite is brought to human host by
A. male anopheles mosquito
B. female anopheles mosquito
C. male culex
D. female culex
Answer : B

41. Carbohydrates are mainly needed for
A. growth
B. immunity
C. repair
D. energy
Answer : D

42. Who first observed the plasma membrane?
A. William Seifriz
B. Schwann
C. Palade
D. None of the above
Answer : A

43. Blood is a kind of
A. epithelial tissue
B. connective tissue
C. nervous tissue
D. cartilage
Answer : B

44. Excess of amino-acids are broken down to form urea in the
A. Liver
B. Kidney
C. Spleen
D. Rectum
Answer : A

45. The counting of RBCs is done with
A. haemocytometer
B. haemoglobinometer
C. clinostat
D. thermometer
Answer : A

46. Herbivores are
A. primary consumers
B. secondary consumers
C. tertiary consumers
D. decomposers
Answer : A

47. Blood is a kind of
A. epithelial tissue
B. connective tissue
C. nervous tissue
D. cartilage
Answer : B

48. The specific gravity of blood is
A. lower than water
B. higher than water
C. same as water
D. many times that of water
Answer : B

49. The specific gravity of blood
A. lower than water
B. higher than water
C. same as water
D. many times that of water
Answer : B

50. Ecology of a population is known as
A. demecology
B. synecology
C. autecology
D. space ecology
Answer : A