Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Bio Botany - English Medium - Ecosystem

Samacheer Kalvi 12th Bio Botany - Ecosystem - Book Back Questions in English Medium


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Question 1 Of 10

Succession in a fresh water ecosystem is


Question 2 Of 10

Which of the following is / are not the mechanism of decomposition


Question 3 Of 10

The quantity of energy present in the universe is constant it is related to


Question 4 Of 10

Which of the following does not contain phosphorous?


Question 5 Of 10

Choose the correct pair related to this statement
Secondary productivity can be defined as


Question 6 Of 10

Which of the following is not a sedimentary cycle


Question 7 Of 10

The commonly occurring pioneer species in


Question 8 Of 10

Which of the following is not related to photosynthetic active radiation.


Question 9 Of 10

NPP of oceanic producers is only ……………… billiob tons/year in unit time.


Question 10 Of 10

Assertion : An ecological pyramid is a diagrammatic (or) graphic representation of the trophic structure and function.
Reason : Various trophic levels of a food chain are considered in ecological pyramid.


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