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  4. The integument of Cycas ovule is hard on account of

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Q. The integument of Cycas ovule is hard on account of

COMEDKCOMEDK 2005Plant Kingdom

Solution:

Integument of Cycas is divisible into three layers - outer fleshy layer (sarcotesta), middle stony layer (sclerotesta) and inner fleshy layer (endotesta). Sclerotesta provides hardness to the seed coat.