The read and write control signals are generated by ----section MPU. i) ALU ii) timing and control section iii) Registers iv) PC​

Medulla oblongata controls I. breathing and blood pressure II. Gut peristalsis and gland secretion III. Vasodilation and vasoconstriction IV. Laughing and micturition

Recognize the different region in the root section. I Root hair activity ii. Region of meristematic iii. Region of elongation iv. Region of maturation.

Recognise the different region in the root section i. Root cap ii. Region of meristematic activity iii. Region of elongation iv. Region of maturation

The events of mitotic cell cycle which are under genetic control are I. Cell growth II. DNA replication III. Distribution of chromosome to daughter nuclei IV. Chromosome replication

Explain the role of the following hormones/proteins with reference to control of human male reproductive systems. (i) GnRH (ii) LH (iii) Testosterone (iv) FSH.

Human skin colour is the example of I.multiple gene inheritance. II. Three or more genes controlling this trait. III. single gene controlling this trait. IV. Two gene controlling this trait. V. environment plays a significant role in this trait. Choose the correct option.