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Sexual Reproduction in flowering Plants

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Functional megaspore in an angiosperm develops into

  • Ovule

  • Endosperm

  • Embryo sac

  • Embryo


C.

Embryo sac

Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.

Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.

1804 Views

The innermost layer of anther is tapetum whose function is :
  • dehiscence
  • mechanical
  • nutrition
  •  protection.

C.

nutrition
1827 Views

The female gametophyte of a typical dicot at the time of fertilization is:
  •  8-celled
  • 7-celled
  • 6-celled
  • 4-celled

B.

7-celled
2359 Views

In a bisexual flower when the gynaecium matures earlier than anther, it is called as :
  • protandry
  • protogyny
  • herkogyny
  • None of the above.

B.

protogyny
1265 Views

Simultaneous meiotic division of microspore mother cells leads to :
  • tetrahedral tetrad
  • linear tetrad
  •  isobilateral
  • decussate tetrad.

A.

tetrahedral tetrad
1487 Views

The fertilization occurs in the :
  • ovary
  • ovule
  • embryo sac
  • nucellus.

A.

ovary
1446 Views