1250 Important Biology MCQ Question and Answer PDF

1.Which of the following statements about phloem transport is correct?

  • APhloem transport occurs unidirectionally
  • BGravity influences phloem transport
  • CCa+ is the most abundantcation in phloem sap 
  • DSugar is transported in phloem as non-reducing sugar
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Correct Answer : (D)

Sugar is transported in phloem as non-reducing sugar

Explanation:

2.Which cell organelle is the site of photosynthesis and also contains chlorophyll?

  • AChloroplasts
  • BVacuole
  • CCytoplasm
  • DNucleolus
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Correct Answer : (A)

Chloroplasts

Explanation:

3.Smooth muscles are likely to be found in

  • AMuscles of legs
  • BMuscles of arms
  • CStomach
  • DHeart
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Correct Answer : (C)

Stomach

Explanation:

4.The suicidal bags of the cell are

  • ALysosomes
  • BRibosomes
  • CDictyosomes
  • DPhagosomes
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Correct Answer : (A)

Lysosomes

Explanation:

5.What is the main purpose of white blood corpuscles?

  • ATo carry nutrients
  • BTo combat infection
  • CTo carry oxygen
  • DTo give strength
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Correct Answer : (B)

To combat infection

Explanation:

6.Which of the following is not connective tissue?

  • ABone
  • BCartilage
  • CBlood
  • DSkeletal muscle
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Correct Answer : (D)

Skeletal muscle

Explanation:

7.The chemical component that is invariably found in all viruses is

  • AProteins
  • BLipids
  • CDNA
  • DRNA
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Correct Answer : (A)

Proteins

Explanation:

8.The connective tissue that connects a muscle to a bone is

  • ACartilage
  • BLigament
  • CTendon
  • DInterstitial fluid
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Correct Answer : (C)

Tendon

Explanation:

9.Which of the following organisms does not fit into the cell theory?

  • ABacteria
  • BVirus
  • CFungi
  • DPlants
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Correct Answer : (B)

Virus

Explanation:

10.The only living tissue in plant xylem is

  • ATrachea
  • BXylem fibre
  • CXylem parenchyma
  • DTracheid
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Correct Answer : (C)

Xylem parenchyma

Explanation:

11._________  is the cell organelle, in which the biochemical processes of respiration and energy production occur.

  • AMitochondria
  • BChloroplast
  • CRibosomes
  • DNucleus
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Correct Answer : (A)

Mitochondria

Explanation:

12.The name of first mammal clone sheep is

  • ANoori
  • BDolly
  • CLouise
  • DDurga
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Correct Answer : (B)

Dolly

Explanation:

13.Which of the following is not a connective tissue?

  • AAdipose Tissue
  • BCompact Bone
  • CCardiac Muscle
  • DAreolar Tissue
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Correct Answer : (C)

Cardiac Muscle

Explanation:

14.Which of the following cell organelle is present only in plant cell?

  • AMitochondria
  • BCell wall
  • CCell membrane
  • DVacuole
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Correct Answer : (B)

Cell wall

Explanation:

15.Endoplasmic Reticulum are rough because of  ________ present on their surface.

  • AGolgi bodies
  • BPlastids
  • CLysosomes
  • DRibosomes
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Correct Answer : (D)

Ribosomes

Explanation:

16.Which of the following cell organelle is responsible for cellular respiration?

  • AGolgi bodies
  • BMitochondria
  • CNucleus
  • DLysosomes
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Correct Answer : (B)

Mitochondria

Explanation:

17.Synapse gap is present between which of the following?

  • ATwo neurons
  • BBrain and Spinal Cord
  • CTwo kidneys
  • DNone of these
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Correct Answer : (A)

Two neurons

Explanation:

18.What is the name of a group of similar cells performing a specific function?

  • ATissue
  • BOrgan
  • COrgan system
  • DCellular organization
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Correct Answer : (A)

Tissue

Explanation:

19.Which among the following is not a connective tissue?

  • ABlood
  • BBone
  • CSkin
  • DCartilage
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Correct Answer : (C)

Skin

Explanation:

20.Which among the following does not have a cell wall?

  • AEuglena
  • BParamecium
  • CGonyaulax
  • DMycoplasma
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Correct Answer : (D)

Mycoplasma

Explanation: