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

Fill in the Blanks:

The ______ is the layer of the atmosphere that contains the protective ozone layer

What is cytokinesis?

Fill in the Blanks:

______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.

True or False:

Ozone in the Troposphere is a harmful pollutant.

Ozone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:

Explain the significance of mitosis.

Give Reasons for the following
The mitosis is called equational division.

Differentiate between
Centrifugal cytokinesis and Centripetal cytokinesis.

Give a labeled diagram to illustrate amitosis.

Give Technical Terms

The shortest phase of mitosis.

Give Technical Terms

The division which brings about vegetative growth.

Complete the following sentence with appropriate word  :

The type of cell division that occurs in the apical meristem of plants is ______.

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Somatic cells of a multicellular organism arise from a single cell by mitosis.

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Asexual reproduction is accomplished through mitosis.

What is a monohybrid cross? How did Mendel perform this cross?

A certain couple got four daughters in a sequence and no son. Does it mean that the husband does not produce Y-chromosome bearing sperms? Explain. What is the chance of this couple having a daughter?

Differentiate Between  Monohybrid and Dihybrid cross.

Assertion (A): Sympathetic nervous system prepares the body for violent action against abnormal conditions.

Reason (R): Sympathetic nervous system accelerates heartbeat.

Which of the following is correct?

Name the following:

A defect in our eyes in which some parts of the object are in focus while the other parts are blurred.

Given below is a schematic representation of the inheritance of the shape of the seeds of garden peas. Answer the questions that follow:

1. Which is the dominant and recessive allele of the trait?
2. What does the ratio 3 : 1 in the F₂ generation represent?
3. State Mendel's Law of Dominance.