GK Questions & Answers on Science: Biology Terminology (Set 3)

1. The longest fibre on the cell body of a neuron is called:

A. Myelin

B. Nerve endings

C. Axon

D. Dendrites

Ans. C

2. The axon passes the impulse to another neuron through a junction called:

A. Nerve endings

B. Synapse

C. Cytoplasm

D. Nucleus

Ans. B

3. What are those reflex actions called which involve brain?

A. Reflex arcs

B. Cerebral reflexes

C. Spinal reflexes

D. None of the above

Ans. B

4. The chemical substances which coordinate the activities of living organisms and also their growth are called:

A. Hormones

B. Blood

C. Sodium

D. Cytoplasm

Ans. A

5. When the parent organism splits to form two new organisms, it is called:

A. Budding

B. Spore formation

C. Binary fission

D. Multiple fission

Ans. C

6. The process of getting back a full organism from its body part is called:

A. Spore formation

B. Budding

C. Regeneration

D. Fragmentation

Ans. C

7. The breaking up of the body of a simple organism into two or more pieces on maturing, each of which subsequently grows to form a complete new organism, is called:

A. Fragmentation

B. Vegetative propagation

C. Binary fission

D. Budding

Ans. A

8. When new plants are obtained from the parts of old plants, without the help of any reproductive organs, it is called:

A. Vegetative propagation

B. Spore formation

C. Fragmentation

D. Multiple fission

Ans. A

9. When the cut stems of two different plants are joined together in such a way that the two stems join and grow as a single plant, it is called:

A. Cutting

B. Layering

C. Grafting

D. None of the above

Ans. C

10. The transfer of pollen grains the anther of a stamen to the stigma of a carpel is called:

A. Germination

B. Pollination

C. Fertilisation

D. Tissue culture

Ans. B