MICROANATOMY

Detailed explanation-1: -A chloroplast is generally much larger than a mitochondrion and contains, in addition to an outer and inner membrane, a thylakoid membrane enclosing a thylakoid space.

Detailed explanation-2: -There are two distinct regions present inside a chloroplast known as the grana and stroma. Grana are made up of stacks of disc-shaped structures known as thylakoids or lamellae. The grana of the chloroplast consists of chlorophyll pigments and are the functional units of chloroplasts.

Detailed explanation-3: -They have an outer and inner membrane enveloping the intermembrane space. The inner membrane separates ‘stroma’ from the intermembrane space. The presence of a double-membrane helps in creating a concentration gradient and controls the flow of substances across it.

Detailed explanation-4: -In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.