(A) $Pollen-embryo$ (or $Pollen-embryoid$) refers to an embryo-like structure that develops from a pollen grain (microspore) through the process of an

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Embryo-like structure from pollen

(A) $Pollen-embryo$ (or $Pollen-embryoid$) refers to an embryo-like structure that develops from a pollen grain (microspore) through the process of androgenesis. In this process,the microspore,instead of developing into a male gametophyte,undergoes repeated divisions to form a mass of cells resembling an embryo,which can eventually develop into a haploid plant.

Class 12 Biology Sexual Reproduction in Flowering Plants Mix Examples-Sexual Reproduction in Flowering Plants

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What is a $Pollen-embryo$?

A
Embryo-like structure from pollen
B
Development of pollen within the embryo sac
C
Development of embryo sac from pollen
D
Fusion of pollen and embryo sac

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Class 12 Questions

Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

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Mix Examples-Sexual Reproduction in Flowering Plants

In which of the following organisms is internal fertilization observed?

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Which is the most logical sequence with reference to the life cycle of angiosperms?

Medium

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Name the parts of an angiosperm flower in which development of male and female gametophyte take place.

Easy

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Match the Column-$I$ and Column-$II$ and choose the correct combination from the given options:-

Column-$I$ Column-$II$

$(a)$ Multicarpellary,syncarpous pistil $(i)$ Michelia

$(b)$ Multicarpellary,apocarpous gynoecium $(ii)$ Papaver

$(c)$ Cleistogamous flowers $(iii)$ Sugar Beet

$(d)$ Perisperm $(iv)$ Commelina

Column-$I$	Column-$II$
$(a)$ Multicarpellary,syncarpous pistil	$(i)$ Michelia
$(b)$ Multicarpellary,apocarpous gynoecium	$(ii)$ Papaver
$(c)$ Cleistogamous flowers	$(iii)$ Sugar Beet
$(d)$ Perisperm	$(iv)$ Commelina