Question

Chromatophores take part in
A. Respiration
B. Photosynthesis
C. Growth
D. Movement

Answer 1

Hint: The pigment-containing and light-reflecting cells, or groups of cells are known as Chromatophores. They are found in bacteria and a wide range of animals like amphibians, fishes, reptiles, etc. These are present in membranes of phototrophic bacteria and are primarily used for photosynthesis as they contain bacteriochlorophyll pigments and carotenoids.

Complete answer:
> Option A- Respiration
Respiration in plants uses sugars produced during photosynthesis and oxygen to produce energy for plant growth. The process of respiration takes place in the mitochondria of the cell in the presence of oxygen, and is therefore called "aerobic respiration".

> Option B- Photosynthesis
Photosynthesis is a process occurring in plants and other organisms that converts light energy into chemical energy that is later released to fuel the activities of organisms.

> Option C- Growth
Growth in plants takes place due to the lengthening of stems and roots. Some woody plants also increase in thickness during their lifespan. The increase in the length of the shoot and the root is called primary growth and it occurs due to cell division in the shoot apical meristem.

> Option D- Movement
The movement of higher plants occurs chiefly in the form of bending, twisting, and elongation of certain plant parts or organs. But there are some other plant movements that take place spontaneously and without any external stimuli. These movements are known as spontaneous or autonomic movements.

Hence, the correct answer is option (B).

Note: Chromatophores are organelle of photosynthesizing bacteria, usually not separated from the cytoplasm by a membrane. Chromatophores consist of bacteriochlorophylls, carotenoids, and a number of electron carriers, also including enzymes that help synthesize pigments. Photosynthesis takes place in Chromatophores.