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Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

हिन्दी

In some apomictic species, the diploid embryo develops without fertilisation because:

  1. The haploid egg cell is directly stimulated by pollen tube hormones.
  2. The diploid egg cell is formed without reduction division.
  3. Two haploid polar nuclei fuse to form the embryo.
  4. Synergid cells undergo meiosis and develop into an embryo.

Correct answer · Option 2

The diploid egg cell is formed without reduction division.

Explanation

In some apomictic species, the diploid egg cell is formed without reduction division (meiosis) and develops into the embryo without fertilisation.

Related questions

Consider the following statements regarding seeds: Statement I: Albuminous seeds retain a part of the endosperm as it is not completely consumed during embryo development. Statement II: In non-albuminous seeds such as castor and maize, the endosperm is completely consumed during embryo development. In the light of the above statements, choose the correct answer:→Read the following statements about pollination by water: Statement I: Pollination by water is quite common in flowering plants and occurs in over 200 genera of both dicots and monocots. Statement II: The distribution of some bryophytes and pteridophytes is limited because of the requirement of water for transport of male gametes and fertilisation. Choose the correct option:→In the given three-dimensional cut section of an anther, which structure is responsible for the release of pollen grains upon maturity?→In angiosperms, what is the primary biological significance of the delay in zygote division until a certain amount of endosperm has developed?→
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