Control and Coordination
The sensitive plant Mimosa pudica shows seismonastic movement as a result of which the whole leaf droops down. The drooping is due to _____.
(1) Loss of turgidity of the basal part of the leaf
(2) Swelling of the basal part of the leaf
(3) Change in direction of the leaf growth
(4) None of these
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Control and Coordination
In a neuron, conversion of electrical signal to a chemical signal occurs at/in
(1) Axon (2) Dendrite end (3) Axonal end (4) Cell body
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Control and Coordination
Which of the following gives the correct sequence of the composition a reflex arc?
(1) receptors -> muscle -> sensory neuron -> motor neuron -> spinal cord
(2) receptors -> motor neuron -> spinal cord -> sensory neuron -> muscle
(3) receptors -> spinal cord -> sensory neuron -> motor neuron -> muscle
(4) receptors -> sensory neuron -> spinal cord -> motor neuron -> muscle
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Control and Coordination
Name the plant hormone responsible for falling of senescent leaves
(1) Gibberelin (2) Auxin (3) Cytokinin (4) Abscisic acid
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Control and Coordination
One of the following is a mismatched pair.
(1) Gibberellins-delaying dormancy in seeds.
(2) Ethylene-ripening of fruit.
(3) Auxins-cell elongation.
(4) Abscisic acid-closing of stomata.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Control and Coordination
Which one is anti transpirant hormones?
(1) Auxin
(2) Cytokinin
(3) Abscisic Acid
(4) Gibberellin
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Control and Coordination
The seat of intelligence, thinking and judgment in human brain is ----
(1) Cerebrum
(2) Medulla oblongata
(3) Cerebellum
(4) Mid brain
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Control and Coordination
How many pairs of spinal nerves arise from spinal cord ?
(1) 31 Pairs (2) 30 Pairs (3) 40 Pairs (4) None of these
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Control and Coordination
Corpus callosum present in
(1) Medulla Oblongata
(2) Pons
(3) Cerebreum
(4) Cerebellum
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Control and Coordination
Which of the following pairs are correctly matched?
(i) Cereal crops - Sorghum (ii) Pulse crops - Lentil
(iii) Oil seed crops - Sesame (iv) Fodder crops - Castor
(1) (i) & (ii) (2) (ii) & (iv) (3) (i), (ii) & (iii) (4) (iii) & (iv)
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
