Which of the following is a common characteristic of algae?

• A. They are exclusively multicellular organisms.
• B. They lack any form of cellular organization.
• C. They are capable of photosynthesis.
• D. They obtain energy only by ingesting other organisms.

Answer: (C)

Verified step by step guidance

1. Understand the question: The problem is asking about a common characteristic of algae, which are a diverse group of organisms found in aquatic environments.
2. Recall the key biological traits of algae: Algae are known for their ability to perform photosynthesis, using sunlight to produce energy. This is a defining characteristic of most algae.
3. Eliminate incorrect options: Analyze each option provided. Algae are not exclusively multicellular; they can be unicellular, multicellular, or colonial. They do have cellular organization, so the option stating they lack it is incorrect. Algae do not obtain energy by ingesting other organisms; they primarily produce energy through photosynthesis.
4. Focus on the correct characteristic: The ability to perform photosynthesis is a common trait among algae, as they contain chlorophyll and other pigments that capture light energy.
5. Conclude the reasoning: Based on the analysis, the correct answer is that algae are capable of photosynthesis, which is a fundamental biological process for these organisms.