Tag: meaning of an ecosystem

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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

Tree $\rightarrow$ Caterpillar $\rightarrow$ Robin $\rightarrow$ Cat represents a food chain. In this food chain, if the tree can provide 100000 calories of energy, how much calories of energy will be available to the robin and the cat?

  1. 10000 and 1000 calories, respectively

  2. 1000 and 100 calories, respectively

  3. 1000 and 10000 calories, respectively

  4. 100 and 1000 calories, respectively
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The amount of energy flow decreases with every successive trophic level and only 10% is passed to the next level as useable biological energy and the rest 90% is lost in the transfer. So, in the given case, 1,00,000 calories of energy  is with producer that is the tree and thus caterpillar will have 10,000, robin will have 1,000 and the energy available with cat will be 100 calories.
So, the correct answer is option B.
Multiple choice evs insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

In an aqueous environment, microscopic animals and plants are collectively known as

  1. Herbivores

  2. Fauna and flora

  3. Planktons

  4. Symbionts
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Planktons are the small or microscopic organisms that drift or swim weakly in a body of water, including bacteria, diatoms, jellyfish and various larvae. Plankton is an important food source for fish and other larger organisms. They cannot swim against a current.

Therefore, the correct answer is option C.

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

What is correct about food chain and food web?

  1. The food chain is a series of organisms feeding on one another, food web consists of a number of interlinked food chains.

  2. The food chain is a series of plants feeding on one another, food web consists of a number of interlinked chains.

  3. The food chain is a series of plant feeding, food web consists of a number of interlinked nets.

  4. The food chain is a series of plants feeding on one another, food web consists of a number of food.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • A food chain is a linear path in which an organism gets food, it starts with plants and ends with animals. A network of many food chains is called a food web. 
  • 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.

Thus, the correct answer is option A.

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

The concept of trophic structure of a community emphasizes the

  1. prevalent form of vegetation

  2. keystone predator

  3. feeding relationships within a community

  4. effects of coevolution
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The trophic structure in a community is the feeding relationships between species as the first level is occupied by producers and then primary and secondary consumers decomposers and so on have a successive trophic level. 

So, the correct option is 'feeding relationships within a community'.