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Protists are divided in three distinct groups as they differ in their mode of nutrition. Is that true?

Answer 1

Maya Anderson

The statement is true: these groups are holozoic, autotrophic and saprozoic.

Protozoa are predatory or holozoic (many protozoa are parasitic), like animals and digest the food in food vacuole. Type of food varies widely as habitat of protozoa varies. For example a malarial parasite feeds on cytolasm of RBC while Paramoecium feeds on aquatic bacteria and algae. Then there are Opalina which absorbs food from cloaca of frog where they live.
Algal protists are associated with chlorophyll, so these are self dependent for food. These are all photosynthetic and traps solar energy in food.
Slime molds are saprozoic, i.e. absorb nutrients from rotting organic materials found in nature.

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Answer 2

Easton Bailey

Yes, that statement is true. Protists are divided into three distinct groups based on their mode of nutrition:

Autotrophs: Protists that can produce their own food through photosynthesis, such as algae.
Heterotrophs: Protists that obtain their food by consuming other organisms or organic matter, such as amoebas and paramecia.
Mixotrophs: Protists that can switch between autotrophic and heterotrophic modes of nutrition depending on environmental conditions.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.