Why can animals move and plants can't?

Motility requires more energy, but without a heavy cell wall, it is far more cost effective. Hence, heterotrophs are more likely to be motile, and autotrophs more likely to be sessile . With multicellularity , the problem becomes compounded. Plants are therefore sessile, and animals generally motile.

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Explanation:

Motility requires more energy, but without a heavy cell wall, it is far more cost effective. Hence, heterotrophs are more likely to be motile, and autotrophs more likely to be sessile . With multicellularity , the problem becomes compounded. Plants are therefore sessile, and animals generally motile.

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