Question 47

Chlorophyll captures the energy of sunlight in photosynthesis.

Chlorophyll plays a crucial role in photosynthesis by capturing the energy of sunlight, which is essential for converting carbon dioxide and water into glucose and oxygen.

A) Taking in carbon dioxide from the atmosphere.

While carbon dioxide is a vital component of photosynthesis, chlorophyll itself does not take in carbon dioxide. Instead, it is involved in the energy conversion process that uses carbon dioxide as one of the raw materials.

B) Capturing the energy of sunlight.

This option accurately describes the primary function of chlorophyll in photosynthesis. Chlorophyll absorbs light energy, mainly from the blue and red wavelengths of sunlight, facilitating the conversion of light energy into chemical energy.

C) Absorbing water from the environment.

Chlorophyll does not absorb water; rather, water is absorbed by the plant's roots and transported to the leaves. Chlorophyll's role is specifically in the light absorption necessary for photosynthesis, not in water uptake.

D) Linking carbon atoms together in the formation of sugars.

While chlorophyll is critical in photosynthesis, it does not directly link carbon atoms to form sugars. This process occurs through a series of biochemical reactions in the chloroplasts, utilizing the energy captured by chlorophyll.

Conclusion

Chlorophyll's primary function in photosynthesis is accurately reflected in option B, as it is responsible for capturing sunlight energy necessary for the entire process. The other options, while related to aspects of photosynthesis, do not correctly describe the specific role of chlorophyll, highlighting its unique importance in energy conversion.