General Biology Set 2 1000+ MCQ with answer for SSC GD

1. The muscles of the heart are
A. striated and involuntary
B. striated and voluntary
C. smooth and involuntary
D. smooth and voluntary
Answer : A

2. The rate of heartbeat is accelerated by the hormone
A. adrenaline
B. acetylcholine
C. thyroxine
D. pituitrin
Answer : A

3. AIDS is caused by the organisms which are
A. bacteria
B. fungi
C. viruses (HTLV III)
D. Protozoa
Answer : C

4. 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

5. In phototropism, auxins
A. Promote growth of cells
B. Inhibit cell division
C. Inhibit growth of cells
D. Stimulate differential growth of cells
Answer : A

6. Vessels leaving the heart are
A. veins
B. arteries
C. capillaries
D. lymph ducts
Answer : B

7. Biocatalysts are
A. hormones
B. vitamins
C. enzymes
D. pheromones
Answer : C

8. If a father has blood group A and the mother has blood group 0, which one of the blood groups may be found in their progeny?
A. A
B. AB
C. O
D. Both (a) and (c)
Answer : D

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

10. What is the bacterial disease in lime fruits?
A. Phythophthora
B. White rust
C. Citrus canker
D. Smut disease
Answer : C

11. The bird that lays the largest egg is
A. crow
B. ostrich
C. cuckoo
D. eagle
Answer : B

12. The medulla oblongata encloses the
A. optic lobe
B. optic capsule
C. second ventricle
D. fourth ventricle
Answer : B

13. Hormones are carried from their place of production by
A. ducts
B. blood
C. lymph
D. muscus
Answer : B

14. The part of the eye behind the lens is filled with
A. aqueous humor
B. vitreous humor
C. lymph
D. blood
Answer : B

15. What is the other name for the brain?
A. myelon
B. encephalon
C. cephalon
D. All the above
Answer : B

16. The spores of Puccinia formed on the leaves of wheat are called
A. Basidiospores
B. Ascidiospores
C. Uredospores
D. Pycnospores
Answer : C

17. An organism eating its own species is called
A. carnivore
B. detritivore
C. cannibal
D. herbivore
Answer : C

18. Which of the following plays an important part in photosynthesis?
A. Chloroplast
B. Centrosome
C. Tonoplast
D. Nematoblast
Answer : A

19. The thrombocytes are associated with
A. blood coagulation
B. transport of respiratory gases
C. removal of nitrogenous wastes
D. All the above
Answer : A

20. 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

21. The oldest era is
A. Palaeozoic
B. Mesozoic
C. Cenozoic
D. Proterozoic
Answer : D

22. Bats can fly in the dark because
A. they have a better vision in the dark
B. the light startles them
C. they produce high pitched sounds called ultrasonics
D. None of the above
Answer : C

23. Sadabahar, a common weed, is the raw material that provides the source of medicines used In the treatment of
A. gout
B. blood cancer
C. coronary heart disease
D. polio
Answer : C

24. Viruses have
A. DNA only
B. RNA only
C. Either DNA or RNA
D. Both DNA and RNA
Answer : C

25. Which of the following diseases is caused by the deficiency of iron in human body?
A. Anaemia
B. Scurvy
C. Dermatosis
D. None of these
Answer : A

26. A plant cell is distinguishable from an animal cell by the presence of
A. nucleus
B. cell wall
C. chloroplasts
D. cell membrane
Answer : B

27. Which organelle in the cell, other than nucleus, contains DNA?
A. Centriole
B. Golgi apparatus
C. Lysosome
D. Mitochondrion
Answer : D

28. The theory that all animals and plants are made up of cells and they could arise only from pre-existing cells was propounded by
A. Robert Hooke
B. Matthias Schleiden and Theodore Schwann
C. Purkinije
D. Leuwenhoek
Answer : B

29. Polyploid wheat does not normally show an increase in
A. size
B. vigour
C. length of the life cycle
D. resistance to desease
Answer : C

30. The blood of cockroach shows the following characteristics except one. Mark it.
A. It serves to distribute nutrient directly to every part of the body
B. It contains several kinds of corpuscles without haemoglobin
C. It collects metabolic wastes
D. It carries oxygen
Answer : D

31. Fat present below the skin surface in our body acts as a barrier against
A. loss of heat from the body
B. loss of essential body fluids
C. loss of salts from the body
D. entry of harmful micro-organisms from the environment
Answer : A

32. The term 'Fauna' means
A. plant kingdom
B. animal kingdom
C. neither
D. Both
Answer : B

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

34. Which among, the following is a solid lubricant?
A. carbohydrate
B. graphite
C. protein
D. starch
Answer : B

35. In case of a heart attack a hormone is injected as an emergency measure. Which one is it?
A. Thyroxine
B. Vasopressin
C. Heparin
D. Insulin
Answer : C

36. Leafy trees help in preventing
A. Land pollution
B. Water pollution
C. Noise pollution
D. Air pollution
Answer : C

37. 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

38. The theory of 'jumping genes' was propounded by
A. Gregor John Mendel
B. Thomas Hunt Morgan
C. Barbara McClintock
D. Watson and Crick
Answer : C

39. What do you mean by lentic biota?
A. Plants and animals in lakes and ponds
B. Plants and animals in forest
C. Plants and animals in sea water
D. Desert plants and animals
Answer : A

40. Bird nu is a disease which affects and spreads through
A. Cattle
B. Sheep
C. Prawn
D. Poultry
Answer : D

41. Measles is caused by
A. bacteria
B. fungus
C. virus
D. protozoan
Answer : C

42. Which of the following crops helps in nitrogen fixation?
A. Rice
B. Wheat
C. Maize
D. Beans
Answer : D

43. Timberline shows
A. a line of trees
B. the limit of the forest
C. annual rings
D. height of trees
Answer : B

44. The mouth of a river opening into the sea is termed as
A. shore line
B. littoral zone
C. continental shelf
D. estuary
Answer : D

45. Origin of species was published by
A. Lamarck
B. Weismann
C. de Vries
D. Charles Darwin
Answer : D

46. Kwashiorkar is a deficiency disease
A. due to poor intake of proteins
B. due to poor intake of carbohydrates
C. due to (a) and (b)
D. due to poor intake of lipids
Answer : A

47. Which one of the following is both an exocrine and an endocrine gland?
A. Gastric glands
B. Pancreas
C. Salivary glands
D. Liver
Answer : B

48. Necrosis is a symptom which is recognised by
A. pattern colouration on leaves
B. little leaves
C. out growth
D. death of tissues
Answer : D

49. 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

50. Vessels proceeding to the heart are
A. veins
B. arteries
C. capillaries
D. lymph ducts
Answer : A