Tag: evs - i

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Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

  1. food web

  2. ecological pyramid

  3. ecosystem

  4. food chain
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Food web is an interconnected network of many food chains. An organism occupies more than one trophic level in a food chain. It feeds on different organisms of lower trophic levels and may be eaten by other organisms of higher trophic levels.
B. An ecological pyramid is the diagrammatic representation of the relationship between numbers, biomass and energy content of producers and consumers in an ecosystem.
C. The ecosystem is the community of organisms which interact with each other and with their surroundings or environment.
D. A food chain is a series of organisms which eat one and get eaten by others.
So, the correct answer is 'Food web'.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Food web usually exists in ecosystem which

  1. Is based on order of preference

  2. Consists of several interconnected food chain

  3. May include organism occupying different tropic levels

  4. More than one option is correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Food web represents an interconnection of many food chains in an ecosystem and that is the reason in a food web, there can be organisms occupying different trophic level at the same time. For example, in a food web, a crow can be at the second trophic level or at the fourth trophic level.

Hence, the correct answer is 'More than one option is correct'

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Food web contains many _______.

  1. Primary consumers

  2. Secondary consumers

  3. Tertiary consumers

  4. Food chains
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A food web consists of multiple intersecting and interconnected food chains within an ecosystem, rather than a single linear sequence. While food chains show one specific pathway of energy transfer, a food web depicts the complex feeding relationships involving various trophic levels.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

A food web is

  1. Like a food chain

  2. A set of interconnected food chains, illustrating the tropic relationships among species

  3. The set of prey species that are consumed by animals in an ecosystem

  4. The tropic (feeding) levels that can be observed in an ecosystem
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A food web represents the complex, non-linear feeding relationships in an ecosystem by showing how multiple food chains overlap and interconnect.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

  1. Food web

  2. Ecological pyramid

  3. Ecosystem

  4. Food chain
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A network of food chains or feeding relationships in which organisms of higher trophic level feeds on more than one type of consumers. 
Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

More than one interconnected food chain in a region forms

  1. Ecological pryamid

  2. Food web

  3. Food chain

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A food web is a natural interconnection between the food chains. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web.

Therefore, the correct answer is option B.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

A group of interconnected food chains is called as a

  1. Food cycle

  2. Complex food chain

  3. Pyramid of energy

  4. Food web
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Food webs can be constructed to describe

  1. The species interactions

  2. The species separation

  3. The species union

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Food webs can be constructed to describe the species interactions. The fundamental purpose of food webs is to describe feeding relationship among species in a community.

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

The base of the food web in marine ecosystem is

  1. Phytoplankton

  2. Zooplankton

  3. Kelp

  4. Fish

  5. Whales
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phytoplanktons are the major producers and constitute the base of five level food web of the marine ecosystem. They convert chemical energy into the usable form of energy. Zooplanktons and other herbivores feed on phytoplanktons and these herbivores are themselves eaten by higher level consumers. Fishes and whales occupy higher level as consumers. Kelps occupy the base of the food web in kelp beds only. The correct answer is option A.