lunes, 25 de febrero de 2013

SEXUAL REPRODUCTION IN PLANTS



-Put these sentences in the correct order
Insects transport the polen grains from one flower to another
The ripened ovule becomes a seed
The seed becomes  a new plant
Pollen tubes develop until  they reach the ovary
The male and female gametes fuse to form the zygote
The pollen grains land on the pistil

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