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Which of the following combinations of floral characteristics is MOST likely to be associated with wind pollination?
Large, showy flowers; abundant nectar; small amounts of pollen; sticky stigma
Small, inconspicuous flowers; no nectar; large amounts of pollen; feathery stigma
Brightly colored flowers; strong fragrance; moderate amounts of pollen; tubular stigma
Large, bell-shaped flowers; copious nectar; few pollen grains; exposed stigma
Winged pollen grains are characteristic of which plant group?
Gymnosperms
Angiosperms
Pteridophytes
Bryophytes
The presence of winged pollen grains in Pinus is an adaptation for:
Wind pollination
Water pollination
Insect pollination
Self-pollination
Which of the following features is NOT associated with winged pollen grains?
Light weight
Dry surface
Large surface area
Heavy and sticky
In angiospermic plant pollen grain reaches to embryo sac after its germination on โฆAโฆ and through โฆBโฆ . Here A and B refer to
A-anther; B-micropyle
A-stigma; B-pollen tube
A-stigma; B-micropyle
A-anther; B-pollen tube
In gymnosperms, during pollination pollen grains are released from the microsporangium and transferred to
Opening of the ovule
Archegonia
Ovary
Stigma
Transfer of pollen grain from anther to the stigma of ovary is called
Autogamy
Pollination
Syngamy
Allogamy