Choose the correct statement.

Easy

A

0.1% of impurities in sewage water also consist of suspended solids like fecal matter, bacteria, paper fibres, etc.
B

Mauve-coloured flowers are a characteristic feature of the world’s most problematic weed.
C

Algal blooms cause deterioration of the water quality but do not cause any harm to other aquatic life, like fish.
D

Biomagnification refers to the decrease in concentration of the toxicant at successive trophic levels.

Solution

Water hyacinth (Eichhornia crassipes), the world’s most problematic aquatic weed. It was brought to India for its very appealing mauve-coloured flowers.
Faecal matter, bacteria, paper fibres are colloidal material. Suspended solids include sand, silt, clay, etc.
Algal blooms decrease the dissolved oxygen in the water bodies and lead to fish mortality.
Biomagnification refers to increase in the concentration of toxicant at successive trophic levels.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

SCAN ME