Page 250 - Primary Six Notes

Water.

Characteristics of seeds and fruits dispersed by water.

 They are light

 They have air tight covering

 They have numerous air spaces in their mesocarp.

 All the above make them able to float on water for a long pe-

riod. E.g. water lily, coconut fruit and mangrove

%

1

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%

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Man

Man has caused the spread of many plants into areas where

these plants did not occur naturally by farming and cultivation.
E.g. coconut originated from Indomalayan region, guava, sweet

potatoes and cassava originated from tropical America