Question

What is the function of stroma lamellae?

Answer 1

Hint: The lamellae is referred to as a thin membrane or layer of tissues. Stroma lamellae is present in the chloroplast. The chloroplast is present in the plants which is an important site for photosynthesis.

Complete answer:
The chloroplast is the important centre in the plant cell where photosynthesis takes place. The chloroplast converts the light energy into chemical energy. The chloroplast is an embedded system which contains a matrix made up of proteins called the stroma. The thylakoids are the basic unit of the membrane system which appear as flattened vesicles.

The stack of thylakoid is known as grana.
The grana are connected to each other by the help of a layer of thin tissue called the stroma lamellae. It connects the thylakoids of two different grana.

The function of stroma lamellae is:
1) The stroma lamellae act as a skeleton of chloroplast.
2) The stroma lamellae help in absorbing maximum sunlight so as to increase the rate of photosynthesis.
3) The stroma lamellae also help in increasing the efficacy of photosynthesis by keeping the grana at a particular distance. This does not allow the grana to clutter.
4) The PS I take place is stroma lamellae. It lacks PS II and NADP reductase.

Note: The photosystems are the structural and functional protein complexes associated with the photosynthesis. The PS II is associated with the light transformation process. It provides electrons for the photosynthetic pathway. PS I absorb light of larger wavelength. It is associated with the production of NADPH.