BIOLOGICAL CLASSIFICATION
KINGDOM PROTISTA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are heterotrophs
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are unicellular
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have chlorophyll a
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store carbohydrates as starch
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Detailed explanation-1: -The main reason is that they contain chloroplasts and produce food through photosynthesis. However, they lack many other structures of true plants. For example, algae do n ot have roots, stems, or leaves. Some algae also differ from plants in being motile.
Detailed explanation-2: -Many species of algae, like larger seaweeds and giant kelp, appear similar to plants (Figs. 2.3 C and D). However, these algae are not true plants. Algae lack the vein-like vascular system found in most plants. Algae are considered the most important photosynthetic organisms on Earth.
Detailed explanation-3: -Similar to red algae, green algae can be unicellular or multicellular. Many unicellular species form colonies.
Detailed explanation-4: -The green algae are often classified in the Kingdom Plantae, based on two characteristics shared with higher plants: 1) green algae use chlorophyll a and b in photosynthesis; 2) the chloroplasts of green algae are enclosed in a double membrane.