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Development of a gametophyte directly fr...

Development of a gametophyte directly from the sporophyte tissue is called

A

Apospory

B

Apogamy

C

Apomixis

D

Parthenogenesis.

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The correct Answer is:
B
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Development of a sporophyte directly from the gametophytic tissue is called

Development of male gametophyte is :-

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"):}

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.

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

Formation of gametophyte directly from sporophyte without meiosis is.

Gametophyte embeded in sporophyte in :-

The development of male gametophyte in angiosperms is

Gametophyte of fern is called.

(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.

DINESH PUBLICATION ENGLISH-NO IDEA-Brain Teasers
  1. Development of a gametophyte directly from the sporophyte tissue is ca...

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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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