Multiple choice

What are the excretory products of plants?

  1. Lignin and cellulose

  2. Cellulose and resins

  3. Resins and gums

  4. Gums and lignin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Resins and gums are the excretory products of plants. In the different parts of the plant body, crystals of some chemical substances are set aside, for example calcium carbonate crystals in the leaf of fig, calcium oxalate crystals in the leaf of colocasia. These excretory materials do not harm the plant. Saprophytic plants such as Mucor, Rhizopus and Penictllium excrete their wastes through diffusion.

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