UPSC Civil Services Biology Questions with Answers & Explanations

Which is called the "powerhouse of the cell"?

1. ARibosome
2. BNucleus
3. CGolgi body
4. DMitochondria

The universal blood recipient group is

1. AO negative
2. BA negative
3. CB positive
4. DAB positive

Which part of the plant carries water from roots to leaves?

1. AXylem
2. BStomata
3. CPhloem
4. DCambium

Tuberculosis is caused by a

1. AProtozoan
2. BVirus
3. CBacterium
4. DFungus

Which blood cells help in clotting?

1. ARed blood cells
2. BPlatelets
3. CPlasma cells
4. DWhite blood cells

Deficiency of Vitamin A causes

1. AScurvy
2. BAnaemia
3. CNight blindness
4. DRickets

The study of plants is called

1. ABotany
2. BEcology
3. CMycology
4. DZoology

Malaria is caused by

1. AA bacterium
2. BA virus
3. CA fungus
4. DPlasmodium

Which blood cells fight infection?

1. ARed blood cells
2. BPlatelets
3. CWhite blood cells
4. DPlasma proteins

The functional unit of the kidney is the

1. ANeuron
2. BNephron
3. CAlveolus
4. DVillus

The universal blood recipient group is

1. AAB positive
2. BA negative
3. CO negative
4. DB positive

Deficiency of iron causes

1. ANight blindness
2. BGoitre
3. CBeriberi
4. DAnaemia

The smallest bone in the human body is the

1. AIncus
2. BStapes
3. CRadius
4. DFemur

Penicillin was discovered by

1. AEdward Jenner
2. BRobert Koch
3. CAlexander Fleming
4. DLouis Pasteur

The basic unit of life is the

1. AAtom
2. BTissue
3. CCell
4. DOrgan

Deficiency of Vitamin C causes

1. ARickets
2. BScurvy
3. CBeriberi
4. DNight blindness

The largest gland in the human body is the

1. ALiver
2. BPituitary
3. CPancreas
4. DThyroid

The universal blood donor group is

1. AAB positive
2. BO negative
3. CB negative
4. DA positive

The largest organ of the human body is the

1. ASkin
2. BHeart
3. CLungs
4. DLiver

Which part of the plant carries food from leaves to other parts?

1. APhloem
2. BXylem
3. CRoot hair
4. DStomata