Multiple Choice QuestionsMost animals that in deep oceanic water are
primary consumers
secondary consumers
tertiary consumers
tertiary consumers
Deficiency symptoms of nitrogen and potassium are visible first in
senescent leaves
young leaves
roots
roots
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Sulphur cycle
Phosphorus cycle
Nitrogen cycle
Nitrogen cycle
B.
Phosphorus cycle
Phosphorus cycle is a sedimentary biogeochemical cycle. It describes the lithosphere, hydrosphere and biosphere and the main reservoir pool is lithosphere. Atmosphere does not play any significant role in the movement of phosphorus because phosphorus and phosphorus-based compounds are usually solids at the typical ranges of temperature and pressure found on Earth. The production of phosphine gas occurs only in specialized, local conditions.
Identify the possible link A in the following food chain
Green plant 
Insect 
Frog 
A 
Eagle
rabbit
wolf
cobra
cobra
Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
Level PC is insects and level SC is small insectivorous birds
Level PP is phytoplanktons in sea and Whale on top level TC
Level on PP is pipal trees and the level SC is sheep
Level on PP is pipal trees and the level SC is sheep
Which one of the following is not a functional unit of an ecosystem?
Energy flow
Decomposition
Productivity
Productivity
The rate of formation of new organic matter by rabbit in a grassland is called
net productivity
secondary productivity
net primary productivity
net primary productivity
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.
|
A |
B |
C |
D |
|
Rock Minerals |
Detritus |
Litter fall |
Producers |
|
A |
B |
C |
D |
|
Litter fall |
Producers | Rock minerals |
Detritus |
|
A |
B |
C |
D |
|
Detritus |
Rock minerals | Producer |
Litter fall
|
|
A |
B |
C |
D |
|
Detritus |
Rock minerals | Producer |
Litter fall
|
Given below is the representation of the extent of global diversity of invertebrates. What groups the four portions (A - D) represent respectively?
|
A |
B |
C |
D |
|
Insects |
Crustaceans |
other animal group |
Molluscs
|
|
A |
B |
C |
D |
|
Crustacean |
Insects | Molluscs | other animal groups |
|
A |
B |
C |
D |
|
Molluscs |
Other animal groups | Crustaceans | Insects |
|
A |
B |
C |
D |
|
Molluscs |
Other animal groups | Crustaceans | Insects |
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