(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

A higher concentration of ethylene is found in

The figure given below shows the stages of ripening in a banana. Answer the questions that follow:

1. Name the plant hormone responsible for the above changes.
2. Mention two characteristic features of this hormone.

Which one of the following is a "dirty" practice contributing to pollution and seriously needs stoppage by educating public?

Thermal power plants give out a lot of ______ waste water.

Sewage is a liquid waste from ______.

List two major harmful effects of the following:

Rivers contaminated with sewage.

List the three major constituents of sewage.

What are the common sources of oil spills?

A lot of fish are dying near a sea shore. Describe any two possible causes.

What is water pollution?

List the cause of water pollution.

What are some types of pollutants found in water?

How could warm water act as a pollutant?

List the three major sources of water pollution

Fill in the Blanks:

The release of hot water into rivers causes ______.

Fill in the Blanks:

Sewage is the source of ______ pollution

True or False:

Sources of groundwater pollution include leaking sewer lines, pumping wells, landfills, fertilizer, and sludge.

71% of earth surface is covered with:

What is a gene? How is it related to heredity?

 Give the significance of mutation.