Englena is an autotrophic organisms because it:

Explanation

Englena is a unicellular organism that is capable of making its own food. This means that it is an autotrophic organism. Autotrophic organisms make their own food through photosynthesis or chemosynthesis. Photosynthesis is the process by which plants, algae, and some bacteria use sunlight to convert carbon dioxide and water into glucose, which serves as food for the organism. Chemosynthesis, on the other hand, is the process by which some bacteria use chemicals to produce their food instead of sunlight. The question is asking why Englena is an autotrophic organism. The correct answer is Option C, which states that Englena can manufacture its food. This means that Englena is capable of producing its own food through the process of photosynthesis, just like plants and some other unicellular organisms. Options A and D are incorrect, as having flagella or moving fast do not necessarily make an organism autotrophic. Option B is also incorrect, as having both plant and animal features does not necessarily make an organism autotrophic either. It is important to understand the concept of autotrophic organisms as it is a fundamental concept in Biology. Autotrophic organisms play a key role in the food chain and ecosystem as they are the primary producers of food. Without them, other organisms would not be able to survive.