MICROANATOMY

Detailed explanation-1: -The internal membrane system of the chloroplast, known as the thylakoid membrane, contains chlorophyll.

Detailed explanation-2: -Plant chloroplasts are large organelles (5 to 10 m long) that, like mitochondria, are bounded by a double membrane called the chloroplast envelope (Figure 10.13). In addition to the inner and outer membranes of the envelope, chloroplasts have a third internal membrane system, called the thylakoid membrane.

Detailed explanation-3: -They are double-membraned, have their own genetic material and contain the green pigment chlorophyll.