Agar-agar commonly used in bacterial cultures and medication is o

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 Multiple Choice QuestionsMultiple Choice Questions

201.

Largest moss is

  • Pogonatum

  • Funaria

  • Dawsonia

  • Polytrichum


202.

Which one of the following is a saprophytic bryophyte?

  • Riccia fluitans

  • Buxbaumia aphylla

  • Funaria hygrometrica

  • Sphagnum


203.

Iodine is obtained from

  • Laminaria 

  • Chlorella

  • Polysiphonia

  • Porphyra


204.

Agar-agar is obtained from

  • Chlorella

  • Spirogyra

  • Ulothrix

  • Gelidium


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205.

In Funaria, stomata are present on the

  • stem

  • leaves

  • capsule

  • apophysis


206.

Phycobilins absorb light of wavelength

  • 670-700 nm

  • 610-650 nm

  • 500-650 nm

  • 420-520 nm


207.

A plant having seeds but lacking flowers and fruits belong to

  • pteridophytes

  • mosses

  • ferns

  • gymnosperms


208.

Pigments common to all algae are

  • chlorophyll- a and phycobilins

  • chlorophyll- a and carotenoids

  • chlorophyll- a and chlorophyll- b

  • chlorophyll- b and carotenoids


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209.

Pratonema is found in the life cycle of:

  • Spirogyra

  • Rhizopus

  • Escherichia

  • Funaria


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210.

Agar-agar commonly used in bacterial cultures and medication is obtained from :

  • Sargassum 

  • Gelidium

  • Ulothrix

  • Ulva


B.

Gelidium

Agar-agar is a mucilage producedby certain red algae. The main sources of Agar-agar in Japan are the thalli of Gelidium, Gracilaria and Gigartina. It is used in the prepration of certain medicines and in cosmetics, leather and textile industries.


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