Question

There was evolutionary change in the structure used for dispersal (the structure which moves to a new location allowing the plant to spread). State the structure which is dispersed in each plant group. (0.5 pt each)

8. Mosses use ______________________________ for dispersal.

9. Ferns use ______________________________ for dispersal.

10. Gymnosperms use ______________________________ for dispersal.

11. Angiosperms use ______________________________ for dispersal.

Answer 1

8, 9 - spores

10, 11 - seeds

Mosses and Ferns are lower type of plants which do not produce seeds. Therefore if they want to disperse themselves, they will disperse their Spores.

Spores are dispersed to new places mainly with the help of air and water currents. Small insects and animals may be involved sometimes.

Gymnosperms and angiosperms are seed plants and if they want to disperse themselves, they disperse their seeds. Seed dispersal takes place with the help of water, air and many insects and birds and animals are also involved.

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