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Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

हिन्दी

Which of the following exotic weed species entered India as a contaminant with imported wheat and causes severe pollen allergy?

  1. A
    Parthenium
  2. B
    Eichhornia
  3. C
    Rauwolfia
  4. D
    Calotropis
View Answer & Solution

Correct answer · Option A

Parthenium

Explanation

Parthenium or carrot grass came into India as a contaminant with imported wheat and causes severe pollen allergy and bronchial afflictions.

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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