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