CBSE - Control and Coordination

1 Control and Coordination 

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

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

2 Control and Coordination 

The major natural Auxin is ….

(1) IBA 
(2) 2, 4D 
(3) IAA 
(4) NAA 

3 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.

4 Control and Coordination 

Name the plant hormone responsible for falling of senescent leaves
(1) Gibberelin (2) Auxin (3) Cytokinin (4) Abscisic acid

5 Control and Coordination 

Match the items in Group-1 with Group- 2.


Choose the correct answer :
(1) A-iv, B-i, C-iii, D-ii (2) A-iii, B-i, C-iv, D-ii (3) A-iii, B-iv, C-i, D-ii (4) A-ii, B-i, C-iv, D-iii

6 Control and Coordination 

Which one is anti transpirant hormones?

(1) Auxin
(2) Cytokinin
(3) Abscisic Acid
(4) Gibberellin

7 Control and Coordination 

Which one of the following pairs do regulate the flowering in plants?

(1) Auxin and Ethylene 
(2) Cytokinin and Ethylene
(3) Florigen and Phytochrome 
(4) Gibberellin and Ethylene

8 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)

9 Control and Coordination 

In how many parts human brain is divided
(1) 4 (2) 5 (3) 3 (4) 2

10 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