NEET BIOLOGY

Detailed explanation-1: -Mixotrophic organisms use a mix of different sources of energy and carbon. Complete answer: Euglena belongs to the kingdom Protista and is a unicellular organism. Euglena performs both autotrophic and heterotrophic modes of nutrition.

Detailed explanation-2: -Euglenoids are mixotrophs. They behave like an autotroph by undergoing photosynthesis in the presence of sunlight and in the absence of sunlight they act as heterotrophs by feeding on smaller organisms.

Detailed explanation-3: -The kingdom Protista exhibits mixotrophic nutrition. Mixotrophs include Euglena and other protist species. Euglena consumes other organisms to obtain carbon and it also utilizes light energy like plants for synthesizing their own food.

Detailed explanation-4: -Euglenas are unusual in that they are both heterotrophic, meaning they must consume food, and autotrophic, meaning they can make their own food. These unicellular organisms usually live in calm ponds or even puddles.

Detailed explanation-5: -Euglena’s nutrition is photoautotrophic. In the absence of light, it can obtain nutrition from dead and decaying organic matter in the substrate by secreting digestive enzymes (saprophytic feeding).