question_answer

Which of the following statements) is/are incorrect?

(i) Light is essential for life to exist on the earth.

(ii) Many species of small plant under the canopy to tall trees in forest show optimal use of available light due to having large sized antenna and higher number of thylakoids.

(iii) UV-rays is not harmful for many organisms. (iv) Photoperiodic requirement is not essential for many plant for flowering.

(v) Red algae can live in deeper water of sea because of having pigment, phycoerythrin.

A) Only (i)  

B)                    Only (ii)

C) Only (iii)       

D)                    (iv) and (v)