Que : 147. Fill in the blanks :

(i) Newlands gave the law of  _______.

(ii) Fishes have only ______  chambers in their heart.

(iii) Green plants make their own ______.

(iv) Aerobic respiration occurs in the presence of  ______.

(v) _______ actions are controlled by the medulla.

(vi) The fusion of male gamete and female gamete is called ______.

(vii) The SI unit of electric current is ______.

(viii) In _______ the flow of energy is unidirectional.

Answer:  

(i) Octaves  

(ii) Two

(iii) Food

(iv) Oxygin

(v) Reflex Action

(vi) Fertilisati  

(vii) Ampere

(viii) ecosystem