(C) ________- When a pollen grain of a flower happens to land on the stigma of the same flower or another flower on the same plant, a biochemical block prevents the pollen grain from germinating.
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zygote
Cell that will divide and develop into the embryo.
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micropyle
The opening through which the pollen tube enters the ovule in the ovule wall
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ovule
the structure which will develop into a fruit.
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generative nucleus
The ________ divides to form two male gametes.
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Gametes
reproductive cells that contain half the number of chromosomes as a normal body cell.
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endosperm nucleus
The ________ will divide and give rise to the endosperm, a food storage tissue that will nourish the developing embryo.
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Self pollination
the transfer of pollen grains from the anther to the stigma of the same flower, or from the anther of a flower to the stigma of another flower on the same plant.
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insect
When the ________ enters the flower, pollen grains from the anthers stick onto the ________.
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Insect pollinated flowers
The type of pollinated flowers that contain nectar.
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Reproduction
the biological process by which new organisms are produced to ensure the perpetuation of the species.
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Pollination
the transfer of pollen grains from the anther to the stigma, enabling fertilisation.
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Cross pollination
the transfer of pollen grains from the anther of a flower to the stigma of a flower of another plant belonging to the same species.
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