NEET BIOLOGY

Detailed explanation-1: -Euglenoids are unicellular microorganisms having a flexible body. They have plastids and can perform photosynthesis in light, but move around in search of food using their flagellum in the absence of light. Thus, they have characters of both plants and animals.

Detailed explanation-2: -They have both characteristics of plants and animals, as they have chloroplasts. They perform the process of photosynthesis in the present of sunlight. But they lack a cell wall and they behave as heterotrophs in the absence of sunlight. Hence, they can’t be called as plant cells.

Detailed explanation-3: -Euglena is a claimed to be a plant by botanists because it contains chloroplats and obtains its food through photosynthesis. On the other hand, zoologists consider it to be an animal as its body is covered by pellicle, it bears myonemes and reproduces by binary fission.

Detailed explanation-4: -Euglena has chlorophyll for Photosynthesis. – Chlorophyll is a chemical substances found in green plants that give plants the characteristic green colouration. Euglena has this green pigment called chlorophyll. Therefore when the conditions are favorable, Euglena can produce their foods just like other green plants.