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Consider the following statements

I. Agar, one of the commercial products obtained from  and  are used to grow microbes and in preparations of ice-creams and jellies

II. and  are used in sewage disposal ponds

III. Some species of marine algae like and  are used as food

Which of the statements given above are correct?

a)

I and II

b)

I and III

c)

II and III

d)

I, II and III



Question ID - 1674 | SaraNextGen Top Answer

Consider the following statements

I. Agar, one of the commercial products obtained from  and  are used to grow microbes and in preparations of ice-creams and jellies

II. and  are used in sewage disposal ponds

III. Some species of marine algae like and  are used as food

Which of the statements given above are correct?

a)

I and II

b)

I and III

c)

II and III

d)

I, II and III

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

Agar is obtained from Gelidium, Gracilaria, Chondrus, Ceramium, etc., and used in microbiological works to solidify culture media. Green unicellular algae such as Chlorella and Chlamydomonas are used in sewage disposal ponds. They remove  and restore  by the process of photosynthesis and make the sewage water enhitable for many fishes and aerobic bacteria. Porphyra Laminaria and Sargassum are used as food

127 votes


127