Which one of the following statements is not true about algae?

Green algae is used in space stations as food and oxygen

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Agar from Fucus is used for making body part casting

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Algae are found under the ice sheets of the Arctic sea in the North pole

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Algae secrete mucilage

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Solution

The correct option is B Agar from Fucus is used for making body part casting
Chlorella, a green algae, is a superfood rich in nutrients. It forms single celled proteins and is used in space for food sources. They provide oxygen, consume the carbon dioxide exhaled by humans and convert the nitrogen-filled wastes.

Alginates (not agar) from Fucus is used for making body part casting. A loose paste of alginate is made, hands are dipped inside it. Once the cast solidifies, hands can be easily taken out of it and the cast is ready.

In the Arctic, when light becomes available (in spring) for photosynthesis, a large biomass of unicellular photosynthetic diatom algae like N. frigida are found under the ice sheet.

Algae do secrete mucilage to prevent from drying, decaying and any epiphytic growth on their surface.

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Similar questions

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3] Times when the earth is covered in these large ice sheets are known as glacial periods (or ice ages).When the ice sheets are not spread, it is called an interglacial period.

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