CBSE - Control and Coordination

1 Control and Coordination 

The seat of intelligence, thinking and judgment in human brain is ---- 

(1) Cerebrum  
(2) Medulla oblongata
(3) Cerebellum  
(4) Mid brain

2 Control and Coordination 

Corpus callosum present in

(1) Medulla Oblongata
(2) Pons
(3) Cerebreum
(4) Cerebellum

3 Control and Coordination 

How many spinal nerves are attached to the spinal cord of man ?

(1) 62 
(2) 42 
(3) 31 
(4) 21

4 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.

5 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)

6 Control and Coordination 

If you keep a ripened fruit in the midst of a basket of raw fruits, all the fruit s get ripened in short period. Because of
(1) Auxin produced by ripened fruits.
(2) Abscisic acid produced by ripened fruits.
(3) Ethylene produced by ripened fruits.
(4) Gibberellins produced by ripened fruits.

7 Control and Coordination 

The major natural Auxin is ….

(1) IBA 
(2) 2, 4D 
(3) IAA 
(4) NAA 

8 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

9 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

10 Control and Coordination 

An average Gestation period in Human beings is .....

(1) 290 days
(2) 280 days
(3) 275 days
(4) 300 days