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Insect pollinated flowers are charact...

Insect pollinated flowers are characterized by dry and smooth pollen.

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Correct Statement: Insect pollinated flowers are characterized by larger and spiny pollen.
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Wind pollinated flowers are:

In wind pollinated flowers, the pollen grains are:

In the tropical rainforest, the majority of trees have showy animal-pollinated flowers. In temperate forests the majority of trees are wind pollinated. Which factors best explain these contrasting patterns ? (i) Wind is rare in tropical forests. (ii) Because of high species diversity in the tropics, individuals of trees species are often widely separated making wind an inefficient means of pollen dispersal. (iii) More opportunities for coevolved mutualisms exist in tropical forests because of the high diversity of animal species. (iv) Trees in tropical forests are mostly evergreen and year-round leaf canopies impede pollen dispersal by wind. (v) Flowering in tropical forests occurs over a short period of time when wind is absent. (a) (i) , (ii) and (v) (b) (i),(iii) and (v) (c) (ii), (iii) and (iv) (d) (ii) and (iv)

Some flowers are highly modified to insect pollination . They have many features which help this kind of pollination . (a) What are these flowers called as ? (b) Explain the characters which make them suitable for this type of pollination .

imagine the structure of pollen grain of a sweet scented small flower and the structure of ovule . From the appearance of the pollen grain . (a) Identify the agent of pollination . (b) During fertilization what will be the contribution of the pollen grain in the female gametophyte ?

Squirrels pollinate flowers of __________.

Assertion : Although geitonogamy is functionally crosspollination involving a pollinating agent, genetically it is similar to autogamy. Reason : In geitonogamy, pollen grains from the anthers of one flower are transferred to the sigma of another flower borne on the same plant.

Why do insects visit flowers ?