24. A) What are Decomposers? What will be the consequence of their absence in an ecosystem?
B) What are the advantages of cloth bags over plastic bags?
Answers
Explanation:
A. decomposer is an organism that breaks down long chain polymers from dead organisms into smaller molecules. Decomposers are bacteria and fungi. ... Decomposers are heterotrophs. This means they use organic substrates to get their energy, carbon and nutrients for growth and development.
In the absence of decomposers, the dead bodies of plants and animals would keep lying as such and the elements of plant and animal bodies would never be returned to their original pool like soil, air and water. The cycling process of life and death would be disrupted.
B. Using cloth bags over plastic bags during shopping has a various advantages such as cloth bags are environment friendly because they are biodegradable whereas plastic bags are non-biodegradable and can harm environment. Moreover, a cloth bag lasts longer than plastic bags.
Answer:
A) Decomposers are organisms that break down dead or decaying organisms. Decomposers decompose dead remains of plants and animals. By doing so, they serve two purposes. One; they reduce the burden on the environment by clearing dead remains. Two; they channelize the raw materials back to the environment. Hence, if there were no decomposers in the environment it would lead to the accumulation of dead plants and animals in the environment.
B) Cloth bags have the following advantages over plastic bags:
i) Cloth bags are biodegradable so they do not pollute the environment.
ii) Cloth bags are capable of carrying more things.
iii) They can be reused over and over again.