In grasses what happens in microspore mother cell for the formation of mature pollen grains:
1. One meiotic and two mitotic divisions
2. One meiotic & one mitotic division
3. One meiotic division
4. One mitotic division
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn Angiosperm all four microspores of a tetrad are covered by a layer that is formed by:
1. Pectocellulose
2. Callose
3. Cellulose
4. Sporopollenin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a flowering plant, archesporium gives rise to:
1. Only the wall of the sporangium
2. Both wall and the sporogenous cells
3. Wall and the tapetum
4. Only tapetum and sporogenous cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology