Amphivasal or leptocentric vascular bundles are found in

The large empty colourless cells seen on the upper epidermis in grasses which facilitate the curling of leaves to minimise water loss are . . . . . .

Cystolith mineral crystals are found in:

Distinguish between the following: Open and closed vascular bundles.

The vessel elements of angiosperms differ from other elements of xylem in having

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