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CBSE Class 10 Answered

what are circum-nutational movements?give 1 example.-3 mks
Asked by deepitapai | 06 Jun, 2008, 11:20: AM
Expert Answer

Circumnutational movements are autonomous, helical growth movements carried out by the plants following internal causes.It is created by the circulation of a zone of increased growth rate around the tendril or shoot axis. This movement increases the possibility of the plant part with a support.

This movement has been observed most commonly in specialized leaves called tendrils, in which the tendril tips follow a more or less regular ellipse as they move.

Many seedlings and twining plants also carry out this movement.

Answered by | 06 Jun, 2008, 09:21: PM

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