Choose correct statements
(A) Pyrenoids are present in all algae that is meant for storage of starch only.
(B) Gelatinous coating of algin is found on the cellulosic wall of Phaeophyceae.
(C) Rhodophyceae contains $r$-phycoerythrin pigments as well as $2$ , unequal lateral flagella.
(D) Majority of red algae are marine with greater concentration found in the warmer areas.
 

Label the parts.

Examine the figure given below and select the correct option giving all the four parts $(a, b, c \text { and } d)$
rightly identified.

Which of the following statements about pteridophytes are correct :
$\left(i\right)$ Gametophytes require cool, damp, shady places to grow
$\left(ii\right)$ Water is required for fertilization
$\left(iii\right)$ Precursor of the seed habit considered an important step in evolution in pteridophytes.
$\left(iv\right)$ In the majority of the pteridophytes all the spores are of dissimilar kinds.