Question:

Read the following statements about 'Terror of Bengal' and select the correct ones. (i) 'Terror of Bengal' is the name given to water hyacinth (Eichhornia), an algae. (ii) Eichhornia was introduced in India due to its aesthetic value. (iii) Eichhornia drains oxygen from the water which leads to death of fishes.

Updated On: Jul 7, 2022
  • (i) and (ii)
  • (i) and (iii)
  • (ii) and (iii)
  • (i), (ii) and (iii)
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The Correct Option is C

Solution and Explanation

Water hyacinth or "Terror of Bengal" is an aquatic plant which is one of the most invading weeds found growing in the standing water. It is also called as "blue devil" as it takes oxygen from the water which causes death of fishes. This plant was introduced in India for its beautiful flowers and shape of leaves. It can propagate vegetatively at a fast rate and spread all over the water body in a short time. It is very difficult to remove it from the water body.
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Concepts Used:

Animal Tissues

Human bodies, like most animal bodies, are made up of four different types of tissue:

Epithelial Tissue:

This tissue forms the outer layer of the body and also lines many of the body's cavities where it has a protective function.

General functions of epithelial tissue:-

  1. Provides a barrier between the external environment and the organ that it is covering.
  2. Specialized to function in secretion and absorption.
  3. Protects organisms from microorganisms, injury, and fluid loss.

Connective Tissue:

This tissue assists in the support and protection of organs and limbs and depending on the location in the body it may join or separate organs or parts of the body.

Muscle Tissue:

This tissue enables various forms of movement, both voluntary and involuntary.

Nerve Tissue:

This tissue is responsible for the carrying of electrical and chemical signals and impulses from the brain and central nervous system to the periphery, and vice versa.