Which one of the following is NOT a disadvant | vedclass

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(C) Self-pollination involves the transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.Disad

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Genetic stability can be maintained

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(C) Self-pollination involves the transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.Disadvantages of self-pollination include:$1$. It leads to inbreeding depression,which makes the progeny weaker over generations.$2$. There is no scope for genetic recombination,meaning no new or improved varieties can be developed.$3$. The progeny has less adaptability to changing environmental or climatic conditions.Genetic stability,however,is considered an advantage of self-pollination because it helps in preserving the purity of a particular trait or variety. Therefore,maintaining genetic stability is not a disadvantage.

Column-$I$	Column-$II$
$(a)$ Sporopollenin	$(1)$ Spindle-shaped nucleus
$(b)$ Cellulose,Pectin	$(2)$ Exine
$(c)$ Vegetative cell	$(3)$ Intine
$(d)$ Generative cell	$(4)$ Irregularly shaped nucleus

Which one of the following is $NOT$ a disadvantage of self-pollination?

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Match the following columns:
Column-$I$ Column-$II$
$(a)$ Sporopollenin $(1)$ Spindle-shaped nucleus
$(b)$ Cellulose,Pectin $(2)$ Exine
$(c)$ Vegetative cell $(3)$ Intine
$(d)$ Generative cell $(4)$ Irregularly shaped nucleus

What is the nature of male gametes in angiosperms?

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All of the following are features of angiosperms except $-$

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