Q. Read the following statements regarding Euglenoids and select the INCORRECT ones.
(i) These are mostly freshwater organisms found in stagnant water.
(ii) Their body is covered by a protein-rich layer called pellicle which makes their body flexible.
(iii) They are photosynthetic in the presence of sunlight but become heterotrophs in the absence of sunlight.
(iv) They usually possess two flagella, one long and one short.
(v) Euglenoids are multicellular ciliate protists.

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Solution:

Euglenoids are unicellular freshwater organisms with two flagella (one long one short) belonging to the kingdom Protista and are found in stagnant water. These organisms instead of a cell wall possess a protein-rich layer called pellicle, which helps to make their body flexible. They can act as autotrophs in presence of sunlight as well as heterotrophs in absence of it.