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Write a short note on the ecological efficiency.

Important Questions on Ecology and Environment

MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
What is gross primary productivity? In what unit is it expressed?
HARD
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
What do you mean by the energy stored in plant biomass?
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Describe productivity as a unit of ecosystem.
MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
During ecological succession:
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Gross Primary Productivity - Respiratory losses = _____. (Net primary productivity/Net secondary productivity)
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Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
What are the important roles played by predators in an ecosystem?
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
The annual net primary productivity of the whole biosphere is approximately _____ (dry weight) of organic matter.
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
If 20J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain?
plant → mice → snake → peacock
MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Write any three differences between primary productivity and secondary productivity.
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
A grazing food chain cannot begin in the absence of
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Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Vertical distribution of different species occupying different levels in a biotic community is known as:
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem

The rate of storage of organic matter which is NOT used by the consumer is ______.

MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
The primary producers of the deep-sea hydrothermal vent ecosystem are
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
What is primary production?
HARD
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Study the following graph of the metabolic rate of various terrestrial mammals as a function of their body mass and choose the correct option below.

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MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
Which of the following statements is incorrect?
EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem

Match the trophic levels with their correct species examples in grassland ecosystem.

(a) Fourth trophic level (i) Crow
(b) Second trophic level (ii) Vulture
(c) First trophic level (iii) Rabbit
(d) Third trophic level (iv) Grass

Select the correct option.

MEDIUM
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
What is correct for the Net primary productivity?
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Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem

Choose the correct statements.

A) The total annul accounts of wet organic matter of the forest can be estimated with the annual net productivity amount of standing forest.
B) Ecosystems also exert direct physical influence that help to moderate regional and local weather.
C) Decline in pollinator activity could mean rising cost of pollination dependent fruits and vegetables.
D) Constanza and his colleagues have tried to put price tag on nature's life support services.

EASY
Biology>Ecology>Ecology and Environment>Energy Flow in the Ecosystem
In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?