Test Preparation on Sexual reproduction in flowering plants–II- Biology Test Series for NEET - 2020
When the pollen tube enters through the micropyle, it is termed as
(c) Porogamy is the most common way in angiosperms e.g., Lily.
Female gametophyte of a typical dicot at the time of fertilization is
(b) In mature female gametophyte, 3 antipodal cells, 2 synergids, 1 egg and 1 diploid secondary nucleus are present.
Double fertilization was discovered by
(c) Double fertilization was discovered by Nawaschin, (1898) in Fritillaria and Lilium.
Double fertilization is a characteristic of
(c) Because in gymnosperms, bryophytes and pteridophytes single fertilization is found.
The nuclei of the sperm and egg fuse as a result of
A pollen tube grows down the style because
(c) Filiform apparatus of synergids secretes some chemical substance which is polysaccharide in nature which attract pollen tube.
Which one of the following statements is wrong
(a) In more than 60% angiospermic plants. Pollen grains release in 2-celled stage.
The process of fusion between male nucleus and egg nucleus is called as
(a) Syngamy is fusion of one of the two male gametes with egg to produce diploid zygote (oospore).
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