Ramu while observing the C.S of anther of Datura through a microscope, found four wall layers.
Write down its functions.

Ramu while observing the root nodules of pea plant he noticed the pink colour. Sita said that it is due to the noticed of a substance. Can you name the substance and write its role.

Given below is an enlarged view of one microsporangium of an anther. Name the labelled wall layers A, B, C. (b ) Mention the characteristics and function of the cells forming the wall layer 'C'

Read the following statements and find out the incorrect statements. a. Ovules generally differentiate a single megaspore mother cell (MMC) in the chalazal region of the nucellus. b. The MMC undergoes reduction division and produces four megaspores. c. In a majority of angiosperms, one of the megaspore is degenerated while the other three remains functional. d. The nucleus of the functional megaspore divides mitotically three times and form 2-nucleate, 4-nucleate and later 8-nucleate stages of the embryo sac. e. These mitotic division are strictly free nuclear, that is, nuclear division are immediately followed by cell wall formation.