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Plant Kingdom

Question
CBSEENBI11003125
Wired Faculty App

Agar- agar is obtained from

  • Chlorella

  • Spirogyra

  • Ulothrix

  • Gelidium

Solution

D.

Gelidium

Gelidium, Gracilaria, Pterocladia are red algae with industrial importance. They produce a jelly like substance agar- agar, which is used as a culture medium with a number of different uses.

Chlorella is a green algae containing 50% protein and vitamins. 

Spirogyra is a green alga which is also known as water- silk.

Some More Questions From Plant Kingdom Chapter

Both gymnosperms and angiosperms bear seeds, then why are they classified separately? 

What is heterospory? Briefly comment on its significance. Give two examples.

Explain briefly the following terms with suitable examples:
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy

Differentiate between the following:
Red algae and brown algae

Differentiate between the following:
liverworts and moss

Differentiate between the following:
homosporous and heterosporous pteridophyte

Differentiate between the following:
syngamy and triple fusion

How would you distinguish monocots from dicots? 

Match the followings (column I with column II)  

Describe the important characteristics of gymnosperms. 

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