and seeds are dispersed only when the fruits burst with sudden j e r k s.

castor and balsam.

Explanation:

Some seeds are dispersed when the fruits burst with sudden j e r k s. The seeds are scattered far from the parent plant. This happens in the case of castor and balsam. Areca catechu possesses fibrous mesocarp and stony endocarp.

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vascular tissue transports materials from the environment into the plant.