question_answer

Directions : (11-15)

Read the passage given below and answer the following questions.

As the anther develops, the cells of the sporogenoustissue undergo meiotic cell divisions to form microspore tetrads due to callose. As each cell of the sporogenous tissue is capable of giving rise to a microspore tetrad. Each one is a potential pollen or microspore mother cell (PMC; 2n) or microsporocytes or archesporial cells. The process of formation of microspores from a pollen mother cell through meiosis is called microsporogenesis. The microspoores or pollen grains (n), as they are formed, are arranged in a cluster of four cells- the microsporetetrad i.e.. tetrahederal doe to callose. As the anthers mature and dehydrate, the microspores dissociate from each other due to callase and develop into pollen grains (n). Inside each microsporangium several thousands of microspores or pollen grains are formed that are released with the dehiscence or bursting of anther.

Cells of the sporogeneous tissue undergo which type of cell division

A) Amitosis and mitosis

B) Amitosis and meiosis

C) Mitosis and meiosis

D) Meiosis only