Question

Lamellae of chloroplast are known as
Option A- Granum
Option B- Frets
Option C- Thylakoids
Option D- Stroma lamellae

Answer 1

Chloroplasts are organelles that conduct photosynthesis, in the photosynthetic process chlorophyll captures the energy from sunlight then converts it and stores it. In simple words, chloroplasts are organelles of the plant cell that convert light energy captured from the sun into chemical energy by the photosynthetic process.

Complete answer:
The photosynthetic pigment chlorophyll captures energy from sunlight and then converts this energy and stores it in ATP and NADPH and free oxygen from water in plants. Lamellae of chloroplast is a thin layer or membrane present in it.

Option A- Granum: It is a stacked portion of the thylakoid membrane. It functions in the light reactions of photosynthesis, there are 10 to 100 grana in a chloroplast.

Option B- Frets: These are channels found in the chloroplast. The grana is joined to each other by a colourless membrane known as fret or fret lamellae. As it is present between the grana so it is known as intergranal lamellae.

Option C- Thylakoids: A thylakoid is membrane bound structure inside the chloroplasts, lamellae of chloroplast is known as thylakoids. It forms the stacks of disks that are referred to as grana.

Option D- Stroma lamellae: The stacks of thylakoid sacs are connected by stroma lamellae, this acts like the skeleton of the chloroplast. These maintain distance between the sacs to keep it safe so that efficiency of organelle is maximized.

So the correct answer is Option C- Thylakoids

Note: The thylakoid contains all the chlorophyll that is required by the plant for the process of photosynthesis. These thylakoids are arranged in stacks called as grana and unstacked regions are called as stroma thylakoids. Grana are interconnected to each other by fret lamellae.