EASY
Earn 100

Which one of the following types of organisms occupies more than one trophic level in a pond ecosystem?

50% studentsanswered this correctly

Important Questions on Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.

EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

An illustration of a pyramid of a number of an aquatic ecosystem is given.

Question Image

The pyramid of energy for the same ecosystem would be:

HARD
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
(Choose the correct answer)
Which of the following constitute a food chain?
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

The following figure represents the flow of energy in a pyramid of food. If this ecosystem receives 100000 kcal of sunlight energy of the energy finally available to Tertiary Consumer (TC) is:

Question Image

EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
The term ecosystem was coined by:
MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

Give reason:

Food chains generally consist of only three or four steps.

MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Which one of the following is a characteristic feature of cropland ecosystem?
HARD
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Define Food chain and Food web.
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:
MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Write the types of the food chain and explain it.
MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

a) Given below are some organisms. Arrange all of them in a food chain and show the direction of the flow of energy.

Eagle, grasshopper, frog, grass, snake.

b) Which of the organism in the above food chain has maximum amount of energy ?
c) Give an example of artificial ecosystem.

EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
An association of individuals of different species living in the same habitat and having functional interactions is:
MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

A food chain in a polluted aquatic ecosystem is given. Observe it and answer the following questions.
Freshwater → Algae → Fishes → Birds.

(i) Which organisms are disturbed more due to biomagnification? Why?

(ii) This ecosystem will be destroyed gradually due to biomagnification. Why? 

EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Most animals that live in deep oceanic waters are:
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
The green plants in a terrestrial ecosystem capture the energy of the sun about
MEDIUM
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Vertical distribution of different species occupying different levels in a biotic community is known as:
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Who proposed that ecosystem is the symbol of structure and function of nature?
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Which of the following ecosystem has the maximum amount of biomass production?
HARD
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

Attempt the following:

(i) Construct a Food Chain with the help of the organisms given below:

Hawk, Grass, Snake, Hen.

(ii) Why is it not advisable to have a six-step food chain?

(iii) If Pesticides enter the above food chain.
(a) In which organism will it be found in the maximum amount?
(b) What is this phenomenon called?

EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
In the alpine meadows of the Great Himalayan National Park, the practice of regular grazing by sheep was put to an end. What are the effects on the meadows due to this measure?
EASY
Life Sciences>Ecosystems: Interactions, Energy, and Dynamics>Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.>Cycle of Matter and Energy Transfer in Ecosystems - Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.
Which of the following constitute a food chain ?