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Question
Pappus is present in Compositae for
Pappus is present in Compositae for
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Solution
The correct option is D Air dispersal
The pappus is the modified calyx, the part of an individual floret, that surrounds the base of the corolla tube in flower heads of the plant family Asteraceae or compositae. The Asteraceae pappus may be composed of bristles (sometimes feathery), awns, scales, or may be absent. In some species, the pappus is too small to see without magnification. In some species, such as Dandelion or Eupatorium, feathery bristles of the pappus function as a parachute which enables the seed to be carried by the wind. So, pappus is present in Compositae for air dispersion and not for air pollination, insect pollination and water pollination.
Therefore, the correct answer is option D.
The pappus is the modified calyx, the part of an individual floret, that surrounds the base of the corolla tube in flower heads of the plant family Asteraceae or compositae. The Asteraceae pappus may be composed of bristles (sometimes feathery), awns, scales, or may be absent. In some species, the pappus is too small to see without magnification. In some species, such as Dandelion or Eupatorium, feathery bristles of the pappus function as a parachute which enables the seed to be carried by the wind. So, pappus is present in Compositae for air dispersion and not for air pollination, insect pollination and water pollination.
Therefore, the correct answer is option D.
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