The given statements are some characters of a particular group of Kingdom protista. (i) Most of them are fresh water organisms found in standing water. (ii) They have a protein rich layer (called pellicle) which makes their body flexible. (iii) They have two flagella, a short and a long one. (iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms. Identify the correct group on the basis of these characters.
C. Slime moulds
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Correct Answer : D.
Euglenoids is one of the best-known groups of flagellates. They are commonly found in freshwater, especially when it is rich in organic materials, with a few marine, and endosymbiotic members. Most euglenoids are unicellular. Many euglenoids have chloroplasts and produce energy through the process of photosynthesis, but others feed by phagocytosis, or strictly by diffusion. This group is known to contain carbohydrate paramylon.