TN State Board Samacheer Kalvi Online Test for 11th Std - Biology - English - Ecosystem

Question 1 Of 10

The type of succession in which organisms like bacteria, fungi, actinomycetes and animals are dominant during its early stages is …………..

Heterotrophic Allogenic Autotrophic Autogenic

Question 2 Of 10

Succession in a fresh water ecosystem is

Merosere Hydrosere Lithosere Halosere

Question 3 Of 10

During energy transfer from one trophic level to other only 10% stored at every level this is related to

First law of thermodynamics Second law of thermodynamics Ten percent law Law of thermodynamics

Question 4 Of 10

Blue carbon ecosystems is related to …………….

Carbon sequestration Productivity Visibility Phosphorus cycle

Question 5 Of 10

The term ‘ecosystem’ was proposed by……………..in the year 1935.

A.G. Hoxley A.G.Tansley Odum Lindeman

Question 6 Of 10

Profundal zone is predominated by heterotrophs in a pond ecosystem, because of

with effective light penetration no effective light penetration complete absence of light a and b

Question 7 Of 10

When sparrow eats insects and worms it is a

Primary consumer Secondary consumer Tertiary consumer Carnivore

Question 8 Of 10

Imagine number of fruit eating birds and insects feeding or a big tree what kind of pyramid would be ?

Inverted pyramid of number Inverted pyramid of energy Upright pyramid Upright pyramid of energy

Question 9 Of 10

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

55 45 56 54

Question 10 Of 10

Examine the ecological pyramid given below and select the type of it represent

Upright pyramid of biomass Upright pyramid of number Inverted pyramid of biomass Inverted pyramid of number

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Ecosystem

Samacheer Kalvi 11th Biology - Ecosystem - Book Back Questions in English Medium