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Endosperm may either be completely consumed by the developing embryo in plant __A__ before seed maturation or it may persist in mature seed in plant __B__. A and B plants are, respectively:

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Important Questions on Sexual Reproduction in Flowering Plants

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A typical dicolyledons embryos, consist of an embryonal axis and two cotyledons. The portion of embryonal axis above the level of cotyledons is the ______A______ and which terminates with the
_____B_____ A and B are respectively.
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A typical microsporangium of angiosperm is surrounded by four wall layers.
I. Epidermis
II. Tapetum
III. Middle layer
IV. Endothecium
The correct sequence from outer to the inner side is:
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Chasmocleistogamous flowers is/are found in
(a) Viola (common pansy)
(b) Oxalis
(c) Commelina
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In______of angiosperm pollen grains are shed at 2 celled stage.

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The sausage tree (Kigelia pinnate) is pollinated by