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Question

Which of the statements below is false?

A
Flagellated stage is absent in the life cycle of blue green algae
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B
Free living gametophyte are not found in gymnosperms and angiosperms
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C
Spirogyra and Chlorella are examples of filamentous algae
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D
Agar-agar is obtained from Gelidium and Gracilaria which are examples of red algae
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Solution

The correct option is C Spirogyra and Chlorella are examples of filamentous algae
The statement “Spirogyra is an example of filamentous algae” is true. However, Chlorella is a genus of green algae belonging to the division Chlorophyta. These are non-filamentous with spherical cells of about 2 to 10 micrometre in diameter. These do not possess flagella. Hence, statement c is the incorrect one.

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