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Development of female gametophyte direct...

Development of female gametophyte directly from megaspore mother cell without meiosis is called

A

Apogamy

B

Apospory

C

Syngamy

D

Parthenospore

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The correct Answer is:
B
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Explore conceptually related problems

Formation of gametophyte directly from sporophyte without meiosis is.

(a) Explain the development of female gametophyte from a megaspore mother cell in an angiosperm. (b) Draw a labelled diagram of a fully developed embryo sac.

Embryo sac develops from megaspore mother cell through

Assertion : When embryo sac develops from megaspore mother cell without meiosis it is called diplospory. Reason : Fruits are formed without seeds in diplospory

Assertion: Polyploidy is very common in the member of Filicophyta. Reason: It is due to the development of gametophytes directly from sporophyte without meiospore formation.

A plant cell without cell wall is called

Megaspores are produced from megaspore mother cells after

Megaspore mother cell originates from :

Match the following {:(,"Column I",, "Column II"),((a),"Coleorhiza",(i),"Development of sporophyte directly from gametophyte without intervention of gametes"),((b),"Apogamy",(ii),"Development of gametophyte directly from sporophyte without the involvement of reduction division"),((c),"Indusim",(iii),"An unbranched columnar stem with a crown of leaves"),((d),"Caudex",(iv),"Protective covering of radicle"),(,,(v),"Protective structure of a sorus"):}

Describe the development of female gametophyte in angiosperms.

DINESH PUBLICATION ENGLISH-NO IDEA-Brain Teasers
  1. Development of female gametophyte directly from megaspore mother cell ...

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  2. A structure present in the ovule as well as eggs of birds is

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  3. A plant in which fertilization occurs after the shedding of seed is

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  4. In ovule, exostome is

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  5. Group of specialized thickened nucellar cells between embryo sac and c...

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  6. Hypostase is meant for providing

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  7. A group of specialised nucellar cells between embryo sac and micropyle...

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  8. Sasa paniculata contains a large number of antipodal cells. The number...

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  9. Antipodal cells enlarge tremendously in (a) Sasa (b) Caltha (c) Ac...

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  10. Which one develops from funicle of base of ovule? (a) Sarcotesta (b) ...

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  11. Which one develops from exostome

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  12. In tenuinucellate ovules, the nucellus may break down. The nourishment...

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  13. Endothelium develops from (a) Nucellus (b) Nucellus surrounding embr...

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  14. Middle layers of pollen sac wall are absent in

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  15. Growth of pollen tube is

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  16. The apical growing region of pollen tube is called

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  17. Functional part of pollen tube is separated from the rest by

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  18. Pollen tube cytoplasm is like any other living cell in showing (a) Cal...

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  19. Male nucleus fuses with female nucleus during fertilization in Angiosp...

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  20. Which one is true of male gamete of angiosperms

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  21. Heterofertilization is

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