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SSC CGL MCQ : Biology

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1. Silviculture is the branch of botany in which we study about-

(a) Culture of algae

(b) Development of ofrest

(c) Culture of fungi

(d) Siliciphida plant

2. Study of pollen grain is called-

(a) Pomology

(b) Polynology

(c) Phocology

(d) Mycology

3. Study of internal structure of plant-

(a) Morphology

(b) Anatomy

(c) Cology

(d) Taxonomy

4. Estimatin of age of woody plant by counting annual ring is-

(a) Dendrology

(b) Denrochronolgy

(c) Agronomy

(d) Demography

5. Study of growing plant without soil in water containing nutrient is-

(a) Hydrotonics

(b) Hydrophonics

(c) Hypotonics

(d) None

6. In Exo-biology we study about-

(a) External structure of living beings

(b) Life present on the earth

(c) Life present in the other layer of earth atmosphere

(d) Life found in space and on other setallite.

7. Xenobiotics which are inherently resistant to microbial attack are called as-

(a) Biodegradable

(b) All of the given optins

(c) Recalcitrant

(d) Persistent

8. Curd is sour due to presence of

(a) Citric Acid

(b) Lactic Acid

(c) Acetic Acid

(d) None of these

9. EBOL is a –

(a) Virus

(b) Bacteria

(c) Protozoa

(d) Fungi

10. Virus that infect bacteria are called

(a) Bacteriophages

(b) Basophils

(c) Basal body

(d) Basidiospores

11. Desease caused by HIV-

(a) Tuberculosis

(b) Cancer

(c) Acquired immune deficiency syndrome

(d) None of these

12. The biggest single- celled organism is

(a) Yeast

(b) Acetabularia

(c) Acetobacter

(d) Amoeba

13. Agar – Agar is obtained from –

(a) Fungi

(b) Algae

(c) Moss

(d) Bacteria

14. Red rot of sugarcane is caused by

(a) Colletotrichum falcatum

(b) Cercospora percoruata

(c) Alternaria alternate

(d) Phylophthora infestans

15. Aflatoxins are produced by –

(a) Fungi

(b) Bacteria

(c) Algae

(d) Viruses

16. Statements:

• In Gymnosperms, seeds are enclosing in side fruits.
• Dicots and monocots are included in Angiospersm.

(a) Both Statements 1 and 2 are correct.

(b) Both Statements 1 and 2 are incorrect.

(c) Statement 1 is correct, but Statement 2 is incorrect.

(d) Statement 1 is incorrect, but Statement 2 is correct.

17. Which part of the cinchona yields a drug?

(a) Endosperm

(b) Pericarp

(c) Bark

(d) leaf

18. Fiber of cotton is obtain from–

(a) Stem

(b) Seed

(c) Fruit

(d) Root

19. An enzyme produced by HIV that allows the integration of HIV DNA into the host cell’s DNA is -

(a) Integrase

(b) Ligase

(c) Helicase

(d) DNA gyrase

20. Dr. Norman E. Borlaug belonged to-

(a) Spain

(b) Mexico

(c) America

(d) Austria

21. Eye of potato are -

(a) Apical buds

(b) Axillary buds

(c) Adventitous root

(d) Extra axillary bud

22. Ginger is-

(a) Modified root

(b) Modified stem

(c) Modified leaf

(d) Modified bulb

23. Cactus is referred to as-

(a) Hydrophte

(b) Mesophte

(c) Xerophyte

(d) Epiphte

24. Agar – agar is prepared from

(a) Alage

(b) Lichens

(c) Fungi

(d) Bryophyte

25. The inflorescence of wheat is-

(a) Raceme

(b) Catkin

(c) Spike

(d) Panicle

26. Consider the following statements:

(1) Maize can be used for the production of starch

(2) Oil extracted from miaze can be a feedstock fro biodiesel

(3) Alcoholic beverages can be produced by using maise.

Which of the statements given above is/ are correct?

(a) 1 only

(b) 1 and 2 only

(c) 2 and 3 only

(d) 1, 2, and 3

27. Double fertilization is main feature of-

(a) Bryophtes

(b) Pteridophytes

(c) Gymnosperm

(d) Angiosperm

28. Parthenogenesis is a process in which-

(a) Fruit develop without harmone

(b) Fruit develop without fertilization

(c) Development of egg without fertilization

(d) Development of embryo without fertilization

29. A fertilized egg is known as-

(a) Oospore

(b) Conidiospre

(c) Zoospore

(d) Zygote

30. Lungs of a plant are-

(a) Leaves

(b) Stems

(c) Flowers

(d) Roots

31. The plant from which cocoa and chocolate are obtained is– 

(a) Herb

(b) shrub

(c) Small tree

(d) very big tree

32. Crop shown at the commencement of the monsoon is called-

(a) Rabi crop

(b) Cash crop

(c) Kharif crop

(d) none of these

33. Plant which grow in saline soil are-

(a) Xerophytes

(b) Hydrophytes

(c) Halophytes

(d) Succulents

34. Transpiration in plants is a process of

(a) Photorespiration

(b) Water loss

(c) Food production

(d) Respiration

35. In soil, water that is readily available to plant roots is:

(a) Gravitational water

(b) Capillary water

(c) Hygroscopic water

(d) Bound water

36. Vaseline was applied to both surfaces of the leaves of aplant. Which of the following process/processes would be affected?

• Photosynthesis
• Rspiration
• Transpiration Select the correct

answer using the code given below:

(a) 1 and 3 only

(b) 2 only

(c) 2 and 3 only

(d) 1, 2 and 3

37. Willting of plants occurs due to excessive:

(a) Absorption

(b) Transpiration

(c) Respiration

(d) Guttation

38. The loss of water in the form of water drops is called-

(a) Transpiration

(b) Respiration

(c) Guttation

(d) Exosmosis

39. Transpiration differs from evopartion in-

(a) Rate of water loss

(b) Transpiration is a physiological process while evaporation is physical process.

(c) Transpiration is physical process while evaporation is a physiological process.

(d) Frequency of water loss.

40. Dwarf plants can be made taller by applying-

(a) Gibberellins

(b) Auxins

(c) Cytokinins

(d) Dormin

41. The oxygen in photsythesis is released from-

(a) CO2

(b) H₂O

(c) Both CO₂ & H₂O

(d) Chlorophyll

42. Photolysis of water involves-

(a) Excitement of water

(b) Evoluation of oxygen

(c) Breakdown of water by light

(d) Splitting of water into its ion H+ and OH

43. An element present in chlorophyll –

(a) Ca

(b) Fe

(c) Mg

(d) S

44. Respiration is-

(a) Endothermic process

(b) Exothermic process

(c) Anabolic process

(d) Endagenic process

45. Fermentation is –

(a) Anearobic respiration

(b) Incomplete oxidation of carbohydrate

(c) Complete oxidation carbohydrate

(d) None of above

46. Incomplete break down of sugar in anaerobic respiration form –

(a) Fructose and water

(b) Glucose and CO₂

(c) Alcohol and CO₂

(d) Water and CO₂

47. Respiration is –

(a) Catabolic process that uses carbon dioxide, produce oxygen and converted released energy to ATP

(b) Anabolic process that uses oxygen and carbon dioxide to form ATP

(c) Anabolic process that uses oxygen, piduces carbon dioxide and converts released energy into ATP

(d) Catabolic process that uses oxygen produces carbon dioxide and converts released energy into ATP

48. Harmone helping in cell division-

(a) IAA

(b) NAA

(c) Cytokinn / Seatin

(d) Cibberellin

49. The instrument by which rate of growth of plant is measured-

(a) Hydrometer

(b) Auxanometer

(c) Osmometer

(d) Potometer

50. For the growth in length of plant which of the following is not essential-

(a) Sodium

(b) Calcium

(c) Nitrogen

(d) Phosphorus

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