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(i) In an angiospermic flower, fertilization is said to take place when male gametes carried in the pollen tube fuse with the female gamete, present in the embryo sac. This results in lot of changes in different parts of the flower. State the changes taking place in the following structures of flower post fertilization :
(a) Zygote
(b) Ovule
(c) Ovary
(d) Sepals
(ii) Define germination.
(a) Zygote
(b) Ovule
(c) Ovary
(d) Sepals
(ii) Define germination.
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(i) (a) Zygote: It divides several times to form an embryo within the ovule. (1 Mark)
(b) Ovule: It develops a tough coat and is gradually converted into a seed. (1 Mark)
(c) Ovary: Grows rapidly and ripens to form a fruit. (1 Mark)
(d) Sepals: They shrivel and fall off. (1 Mark)
(ii) Germination is the process when the mature seed develops into a seedling under appropriate conditions. (1 Mark)
(b) Ovule: It develops a tough coat and is gradually converted into a seed. (1 Mark)
(c) Ovary: Grows rapidly and ripens to form a fruit. (1 Mark)
(d) Sepals: They shrivel and fall off. (1 Mark)
(ii) Germination is the process when the mature seed develops into a seedling under appropriate conditions. (1 Mark)