Differentiate between: (c) integument and testa;
Explanation (c) Integument and testa. The integument is a thin layer of living cells. The testa is made of dead cells, mainly sclereids, due to which it is hard and thick. Final Answer (c) Integument and testa. The outermost covering of the ovule is called the integument, whereas, the outermost covering of the seed is called the testa.