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1250 Important Biology MCQ Question and Answer PDF

4000 Important General Science MCQ Question & Answer in PDF Download

1.Transport of oxygen by blood takes place with the help of

  • AErythrocytes
  • BThrombocytes
  • CLymphocytes
  • DLeucocytes
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Correct Answer : (A)

Erythrocytes
Explanation:

2.In a plant, the xylem tissue conducts

  • AWater
  • BFood
  • CWater and food
  • DNone of these
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Correct Answer : (A)

Water
Explanation:

3.Cellulose is the chief constituent of

  • ACell wall
  • BCell membrane
  • CSecondary wall of xylem
  • DBody wall of insects
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Correct Answer : (A)

Cell wall
Explanation:

4.The food conducting tissue of a plant is

  • APhloem
  • BXylem
  • CParenchyma
  • DCollenchyma
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Correct Answer : (A)

Phloem
Explanation:

5.Which of the following is an example of tissue?

  • ABrain
  • BBlood
  • CLiver
  • DStomach
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Correct Answer : (B)

Blood
Explanation:

6.Most fish do not sink in water because of the presence of

  • AAir sinuses
  • BBuoyant scales on the body
  • CSwim bladder
  • DSwimmerets
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Correct Answer : (C)

Swim bladder
Explanation:

7.Plants differ from animals in having

  • ALocomotion
  • BMetabolism
  • CLocalised growth
  • DCatabolism
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Correct Answer : (C)

Localised growth
Explanation:

8.The red colour of human blood is due to

  • AMyoglobin
  • BHaemoglobin
  • CImmunoglobulin
  • DHaptoglobin
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Correct Answer : (B)

Haemoglobin
Explanation:

9.The cells which are responsible for the production of antibodies are

  • ARed blood cells
  • BNeutrophils
  • CLymphocytes
  • DPlatelets
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Correct Answer : (C)

Lymphocytes
Explanation:

10.Fiber diet includes

  • AGlycogen
  • BProteins
  • CCellulose
  • DFats
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Correct Answer : (C)

Cellulose
Explanation:

11.Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells?

  • AMitochondria
  • BGolgi bodies
  • CLysosomes
  • DGlyoxysomes
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Correct Answer : (A)

Mitochondria
Explanation:

12.Which of the following organelles is called ?Atom bombs??

  • AMicrotubules
  • BNucleolus
  • CGolgi bodies
  • DLysosome
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Correct Answer : (D)

Lysosome
Explanation:

13.Which one of the following is called the ?digestive bag? in the cell?

  • AGolgi body
  • BMitochondrion
  • CRibosome
  • DLysosome
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Correct Answer : (D)

Lysosome
Explanation:

14.Which one of the following is known as the ?immovable property? in the cell?

  • ACarbohydrate
  • BFat
  • CProtein
  • DNucleic acid
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Correct Answer : (D)

Nucleic acid
Explanation:

15.The average life span of red blood corpuscles is about

  • A100 ? 200 days
  • B100 ? 120 days
  • C160 ? 180 days
  • D150 ? 200 days
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Correct Answer : (B)

100 ? 120 days
Explanation:

16.The life span of RBC in the body is

  • A120 days
  • B150 days
  • C180 days
  • D190 days
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Correct Answer : (A)

120 days
Explanation:

17.Of which tissue nails, hoofs and horns are made of

  • ACutide
  • BChitin
  • CKeratin
  • DTunicin
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Correct Answer : (C)

Keratin
Explanation:

18.RBCs do not perform aerobic respiration because these do not contain

  • AMitochondria
  • BNucleus
  • CEndoplasmic Reticulum
  • DLysosomes
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Correct Answer : (A)

Mitochondria
Explanation:

19.The basic structural and functional unit of living organisms is

  • ACell
  • BTissue
  • COrgan
  • DSystems
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Correct Answer : (A)

Cell
Explanation:

20.The smallest size of a cell that can be seen with naked eye is

  • A1 micron
  • B10 micron
  • C100 micron
  • D1000 micron
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Correct Answer : (C)

100 micron
Explanation:
4000 Important General Science MCQ Question & Answer in PDF Download

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