RRB JE Biology Questions with Answers & Explanations

The functional unit of the kidney is the

1. ANephron
2. BNeuron
3. CAlveolus
4. DVillus

Deficiency of iron causes

1. ANight blindness
2. BAnaemia
3. CBeriberi
4. DGoitre

The study of plants is called

1. ABotany
2. BZoology
3. CMycology
4. DEcology

The universal blood donor group is

1. AO negative
2. BB negative
3. CA positive
4. DAB positive

The largest gland in the human body is the

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

Dengue is transmitted by the

1. AAnopheles mosquito
2. BAedes mosquito
3. CSandfly
4. DCulex mosquito

The smallest bone in the human body is the

1. AFemur
2. BIncus
3. CRadius
4. DStapes

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

1. ACambium
2. BXylem
3. CStomata
4. DPhloem

Deficiency of Vitamin C causes

1. ANight blindness
2. BRickets
3. CBeriberi
4. DScurvy

Which blood cells help in clotting?

1. AWhite blood cells
2. BPlatelets
3. CPlasma cells
4. DRed blood cells

Malaria is spread by the female

1. AAedes mosquito
2. BCulex mosquito
3. CAnopheles mosquito
4. DHousefly

The functional unit of the nervous system is the

1. AAxon only
2. BSynapse only
3. CNephron
4. DNeuron

Tuberculosis is caused by a

1. AProtozoan
2. BFungus
3. CVirus
4. DBacterium

The basic unit of life is the

1. AAtom
2. BOrgan
3. CCell
4. DTissue

The universal blood recipient group is

1. AB positive
2. BO negative
3. CAB positive
4. DA negative

The largest gland in the human body is the

1. APancreas
2. BLiver
3. CThyroid
4. DPituitary

Photosynthesis takes place in the

1. ANucleus
2. BVacuole
3. CChloroplast
4. DMitochondria

The functional unit of the nervous system is the

1. ASynapse only
2. BNeuron
3. CNephron
4. DAxon only

Deficiency of Vitamin C causes

1. ANight blindness
2. BScurvy
3. CBeriberi
4. DRickets

The study of plants is called

1. AZoology
2. BMycology
3. CBotany
4. DEcology