Question

Which of the following is true about chloroplast
A) It traps carbon dioxide during photosynthesis
B) It breaks up carbon dioxide into carbon and oxygen.
C) It has chlorophyll to trap sunlight during photosynthesis
D) It releases carbon dioxide during photosynthesis.

Answer 1

Hint:- Photosynthesis is the process by which green plants use carbon dioxide and water to produce glucose and oxygen. This oxygen is released into the atmosphere as a by-product. Chloroplasts are organelles in plants where photosynthesis takes place. Chlorophyll is the green pigment that is required for photosynthesis in plants.

Complete answer:-
The chloroplast is the organelle that stores chlorophyll. It is the site of photosynthesis in a plant. This chlorophyll traps sunlight which is essential for photosynthesis to occur. The main role of sunlight is to change the carbon dioxide and water into glucose, a sugar. This glucose is used by the plants as a source of energy. The glucose is also stored in the form of starch so that it can be used as and when required.
The chloroplast is a type of plastid with a high concentration of chlorophyll. It is double-walled. It is a type of storage organ. The chloroplast is a mobile organelle. They are present in the leaves and move about the leaves. Photosynthesis takes place in the chloroplast using this energy and carbon dioxide. Chloroplasts store the energy of the sun in the form of molecules such as ATP and NADPH which are energy-storing. The number of chloroplasts in a cell varies from 1 to 100 depending on the plant type.
Thus, the right option is C.

Note:- Chloroplasts are also present in autotrophic algae. These algae produce their food. The other types of plastids are chromoplast and leucoplast. The chromoplasts are for storing various coloured pigments and the leucoplasts are colourless plastids that store oils, starch, and proteins.