A typical angiosperm embryo sac at maturity is:
1. 7-nucleate and 7-celled
2. 8-nucleate and 8-celled
3. 8-nucleate and 7-celled
4. 7-nucleate and 8-celled
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn some members of which of the following pairs of families, pollen grains retain their viability for months after release?
1. Poaceae; Solanaceae
2. Rosaceae; Leguminosae
3. Poaceae; Rosaceae
4. Poaceae; Leguminosae
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, brings genetically different types of pollen grains to stigma, is:
1. | Chasmogamy | 2. | Cleistogamy |
3. | Xenogamy | 4. | Geitonogamy |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn grasses what happens in micro spore mother cell for the formation of mature pollen grains : -
1. One meiotic and two mitotic divisions
2. One meiotic & one mitotic divisions
3. One meiotic division
4. One mitotic division
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAnemophilly type of pollination is found in
1. Salvia
2. Bottle brush
3. Vallisneria
4. Coconut
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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
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 266141
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 266141
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the direction of micropyle in anatropous ovule :-
1. Upward
2. Downward
3. Right
4. Left
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn Angiosperms, pollen tubes liberate their male gametes into the
1. Central cell
2. Antipodal cells
3. Egg cell
4. Synergids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHair found in the inflorescences of Zea mays is the modification of:
1. | Style | 2. | Stigma |
3. | Spathe | 4. | Filaments |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyEndosperm is formed during double fertilization by
1. Two polar nuclei & one male gamete
2. One polar nuclei & one male gamete
3. Ovum and male gamete
4. Two polar nuclei & two male gametes
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology