Maximum solar energy is trapped by

Options

A. planting trees
B. cultivating crops
C. growing algae in tanks
D. growing grasses

Explanation

To answer the question "Maximum solar energy is trapped by," we can follow these steps:

### Step 1: Understand the Role of Pigments in Photosynthesis
- Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy.
- The primary pigment involved in this process is chlorophyll, which is found in most green plants.

**Hint:** Remember that chlorophyll is essential for trapping solar energy, but it's not the only pigment involved.

### Step 2: Identify Other Pigments
- Apart from chlorophyll, there are other pigments like carotenoids that can also absorb light energy. These pigments are found in carrots and other red or orange fruits and flowers.
- Carotenoids can trap light of certain wavelengths, but their efficiency is not as high as that of chlorophyll.

**Hint:** Consider the variety of pigments present in different plants and their efficiency in trapping solar energy.

### Step 3: Focus on Algae
- Algae are a diverse group of photosynthetic organisms that can trap solar energy effectively.
- They contain a pigment known as phycocyanin, which is water-soluble and can absorb light at various wavelengths.

**Hint:** Think about the advantages of having pigments that can absorb a wider range of light wavelengths.

### Step 4: Compare the Energy Trapping Efficiency
- While trees, crops, and grasses can trap solar energy, algae are particularly efficient due to the presence of phycocyanin.
- This pigment allows algae to absorb maximum wavelengths of light, making them superior in trapping solar energy compared to other plants.

**Hint:** Consider which organisms have the most efficient mechanisms for absorbing and converting solar energy.

### Step 5: Conclusion
- Based on the information gathered, the maximum solar energy is trapped by growing algae in tanks due to their unique pigments that allow for a broader absorption spectrum.

**Final Answer:** The maximum solar energy is trapped by growing algae in tanks.