sexual reproduction in a flowering plants⭐ Flashcards

(7 cards)

1
Q

what is pollination?

A

pollination is the transfer of polllen grains from the anther to the stigma

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2
Q

what are the two types of pollination?

A

self-pollination and cross-pollination

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3
Q

what is self-pollination?

A

self-pollination is the transfer of pollen grains from the anther to the stigma of the same flower or a different flower on the same plant.

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4
Q

what are the 2 features of self-pollination

A

Bisexual flowers with anthers and stigma maturing at the same time.

The stigma is directly below the anthers, so pollen falls onto it easily.

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5
Q

what is cross-pollination?

A

cross-pollination is the transfer of pollen grains from one plant to the stigma of a flower in another plant of the same species.

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6
Q

such flowers have features that attract insects. it includes:

A

-presence of nectar
-petals are large and brightly coloured
-petals have nectar guides to guide the insect to the nectar
-flowers are fragnant

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7
Q

what is the opening in the ovary through which the pollen enters the ovule

A

micropyle

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