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What will be the ploidy of nucellus, endosperm, female gametophyte and antipodal cells?

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Important Questions on Sexual Reproduction in Flowering Plants

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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 22
Mark the incorrect statements-
A. Dioecy prevents both autogamy and geitonogamy
B. Self incompatibility prevents inbreeding
C. Geitonogamy is ecological cross pollination but genetically it is similar to autogamy
D. Both xenogamy and Geitonogamy decrease inbreeding depression
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 23

In the given figure A, B, C, D are:

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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 24
The correct sequence of embryo formation is-
(a) Heart-shaped, globular, mature embryo, pro embryo.
(b) Pro embryo, mature embryo, globular, heart-shaped.
(c) Globular, pro embryo, heart-shaped, mature embryo.
(d) Pro embryo, globular, heart-shaped, mature embryo.
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 25
How many statements are correct?
(a) Transfer of pollen grains from the anther to the stigma of another flower of the same plant is known as geitonogamy.
(b) Pollination by water is quite rare in flowering plants and is limited to about 30 genera.
(c) Majority of insect-pollinated flowers are large, colourful, fragrant and rich in nectar.
(d) Pollination guarantees the transfer of the right type of pollen (compatible pollen of the same species as the stigma).
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 26
A typical angiospermic anther is
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 27
All events from pollen deposition on the stigma until pollen tubes enter the ovule are together referred to as ______A______ Which is_______B______process. Here A and B are respectively
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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 28
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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Alpha Question Bank for Medical: Biology>Chapter 24 - Sexual Reproduction in Flowering Plants>Exercise-2>Q 29
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.