question_answer

Directions : (6-10)

Read the passage given below and answer the following questions.

Tapetum is the inner most nourishing layer of microsporangial wall. The cells have dense cytoplasm. They become large, multinucleated and polyploidy through endomitosis and endopolyploidy. It provides nourishment to growing pollen grains. Tapetum provides enzyme callase for dissolution of callose binding the microspores. It secretes hormones (e.g., IAA) that are stored in pollen grains for their early growth. Tapetum secretes lipid rich Ubischgranules which provide sporopollenin and other materials for exine part of pollen grain covering. It provides pollenkitt (oily, sticky lipid covering and carotenoids) covering around the entomophilous pollen grains. Tapetum provides compatibility-incompatibility proteins to pollen grains.

Cells of tapetum is

A) Uninucleated and haploid

B) Uninucleated and diploid

C) Multinucleated and diploid

D) Multinucleated and polyploidy