Q. Read the following statements about protists and state how many of them are true.
(i) Euglenoids have a carbohydrate rich layer called pellicle.
(ii) Slime moulds are saprophytic fungi.
(iii) Dinoflagellates are mostly found in fresh water and are photosynthetic.
(iv) Spores of slime moulds are dispersed by water.

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Solution:

Euglenoids have a protein-rich layer called pellicle which makes their body flexible. They have two flagella, a short and a long one. Slime molds are saprophytic protists. The body moves along decaying twigs and leaves engulfing organic material. During unfavorable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips. The spores possess true walls. They are extremely resistant and survive for many years, even under adverse conditions. The spores are dispersed by air currents. Dinoflagellates are mostly marine and photosynthetic. They appear yellow, green, brown, blue, or red depending on the main pigments present in their cells.