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Which of the following organisms are kno...

Which of the following organisms are known as chief producers in the oceans ?

A

Dinoflagllates

B

Cyanobacteria

C

Diatoms

D

Euglenoids

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The correct Answer is:
C
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MODERN PUBLICATION-ECOSYSTEM -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)(A. MULTIPLE CHOICE QUESTIONS)
  1. Amount of energy transferred from one trophic level to next is

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  2. Which of the following scientists proposed the concept of ecological f...

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  3. In the process of plant ecological succession, the final stage is :

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  4. A grazing food chain always starts with :

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  5. Source of energy in an ecosystem is :

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  6. Which of the following gas contributes maximum in global warming ?

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  7. Deforestation generally results in reduction of :

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  8. Biomagnifications is due to :

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  9. In hydrarch, which organism constitute pioneer community ?

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  10. Primary carnivores are :

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  11. Which ecosystem has the maximum biomass

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  12. Presence of plants arranged into well defined vertical layers dependin...

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  13. A nitrogen - fixing microbe associated with Azolla is :

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  14. In a food chain , deers are :

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  15. Which type of pyramid of energy is inverted?

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  16. Energy transferred from one trophic level to another is

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  17. What type of ecological pyramid would be obtained with the following d...

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  18. Which of the following organisms are known as chief producers in the o...

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  19. In a species, the weight of newborn ranges form 2 to 5 kg. 97% of the ...

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  20. A grazing food chain cannot beging in the absence of :

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