Pollenkitt is formed from (1) Endothecium (2) Middle layers (3) Microspore mother cell (4) Tapetum.

Answer: (4)

Pollenkitt is a coating of yellow sticky material that is present around insect-pollinated pollen plant of pollen grains. It is an oily layer which provides the pollen with stickiness and a specific odour and helps with insect pollination. The tapetal cells i.e. tapetum contribute mainly to the materials for the formation of pollenkitt.

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