Question

Fill in the blanks
In some plants waste material are present in form of crystal

of calcium oxalate are called_____________.​

Answer 1

Answer:

Raphides are needle-shaped crystals of calcium oxalate as the monohydrate or calcium carbonate as aragonite, found in more than 200 families of plants. Both ends are needle-like, but raphides tend to be blunt at one end and sharp at the other.

Explanation:

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Answer 2

raphides are the material which has 200 families