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NTA Abhyas NEET2020BotanyPlant KingdomPractice

Conifers differ from grasses in the

Options

  1. ALack of xylem tracheids
  2. BAbsence of pollen tubes
  3. CFormation of endosperm before fertilisation
  4. DProduction of seeds from ovules

Correct answer

C. Formation of endosperm before fertilisation

Step-by-step solution

Conifers (gymnosperms) differ from grasses (angiosperms) because in gymnosperms, the female gametophyte is actually endosperm which is made before fertilisation. However, in grasses, endosperm is a tissue formed by the fertilization of second male gamete to polar nuclei. Moreover, in gymnosperms, the endosperm is a haploid tissue, whereas in angiosperms it is triploid.

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