Question

Name the four
classes of Kingdom protesta​

Answer 1

Explanation:

Chrysophytes. This group comprises of the diatoms and golden algae (desmids). ...

Dianoflagellates. These organisms are usually marine and photosynthetic. ...

Euglenoids. These are mostly freshwater organisms. ...

Slime Moulds. Slime moulds are saprophytic protists. ...

Answer 2

Answer:

Dinoflagellates

These organisms are usually marine and photosynthetic. They have an appearance of various colors like yellow, green, brown, blue or red. Their color is influenced and decided by the main pigments present in their cells. The cell wall has stiff cellulose plates on its outer surface. These organisms usually have two flagella; one lies longitudinally and the other transversely in a furrow between the wall plates.

Euglenoids

These are mostly freshwater organisms. We can find them in stagnant water. They do not have a cell wall. Rather, they are built with a protein-rich layer, pellicle that makes their body flexible. They have two flagella. One is short and the other is a long one. The two flagella join with each other at a swelling called paraflagellar body.

Euglena is a connecting link between animals and plants. Nutrition in Euglena is mixotrophic, when the light is available it is photosynthetic, in darkness, it is saprophytic absorbing food from surrounding water.

Slime Moulds

Slime moulds are saprophytic protists. Their body is capable of moving through decaying twigs and leaves engulfing organic material. Under suitable conditions, they form an aggregation called Plasmodium which may grow and spread over several feet. During unfavorable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.

The spores possess true walls. The spores are dispersed by air currents. They are extremely resistant to changes in the atmosphere. They are capable of surviving for many years, even under adverse conditions.

Protozoans

All protozoans are heterotrophs and live as predators or parasites. They are believed to be primitive relatives of animals. There are four major groups of protozoan:

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