Cells in some filamentous cynobacteria that are speciallized for nitrogen fixation are called:

1. Phycobilisomes

2. Chromatophores

3. Grana

4. Heterocysts

Concept Questions :-

Kingdom Monera: Blue Green Algae
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Which of the following are found in extreme saline conditions?

(1) Archaebacteria

(2) Eubacteria

(3) Cyanobacteria

(4) Mycobacteria

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Viroids differ from viruses in having

(1) DNA molecules with protein coat

(2) DNA molecules without protein coat

(3) RNA molecules with protein coat

(4) RNA molecules without protein coat

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Which one of the following is wrong for fungi?

(1) They are eukaryotic

(2) All fungi possess a purely cellulosic cell wall

(3) They are heterotrophic

(4) They are both unicellular and multicellular

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Methanogens belong to

(1) eubacteria

(2) archaebacteria

(3) dinoflagellates

(4) slime moulds

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Select the wrong statement.

(a) The walls of diatoms are easily destructible

(b) 'Diatomaceous earth' is formed by the cell walls of diatoms

(c) Diatoms are chief producers in the oceans

(d) Diatoms are microscopic and float passively in water

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Match Column I with column II and select the correct option using the codes given below:

 

Column I

 

Column II

A.

Pistils fused together

1.

Gametogenesis

B.

Formation of gametes

2.

Pistillate

C. 

Hyphae of higher ascomycetes  

3.  

Syncarpous

D.

Unisexual female flower

4.

Dikaryotic

Codes:

 

A    

B     

C     

D

(1)

4

3

2

1

(2)

2

1

4

3

(3)

1

2

4

3

(4)  

3

1

4

2

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Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom

(1) Protista

(2) Fungi

(3) Animalia

(4) Monera

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The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

(1) thermoacidophiles

(2) methanogens

(3) eubacteria

(4) halophiles

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Which one of the following statements is wrong?

(1) Golden algae are also called desmids

(2) Eubacteria are also called false bacteria

(3) Phycomycetes are also called algal fungi

(4) Cyanobacteria are also called blue-green algae

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