ICSE solutions for Biology [English] Class 10 chapter 1 - Cell Division [Latest edition]

What is the direct cell division? Explain with an example.

Name the two kinds of cell division found in living organisms.

What type of cell division does occur in somatic cells of the body?

Where does the meiosis occur in our body?

What do you mean by cell-cycle?

Write the name of various steps of cell cycle.

Name the structure which initiates cell division?

Why gametes have a haploid number of chromosomes?

Mention three significant changes that occur in a cell during interphase.

What is cytokinesis?

How does colchicine act as mitotic poison? Is there any advantage of it?

Explain the significance of mitosis.

Why is meiosis referred to as reduction division?

What is the importance of meiosis in creating variations?

State how does meiosis maintains chromosome number in a species.

How prophase-I of meiosis differs from prophase of mitosis in an essential way? Describe how it affects the daughter cells?

What is the importance of chiasma formation?

What is the importance of meiosis?

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

Give Reasons for the following
The meiosis is called reductional division

Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.

Give Reasons for the following
Chromosomes are the carriers of heredity.

Differentiate between
Mitosis and Meiosis.

Differentiate between
Centrifugal cytokinesis and Centripetal cytokinesis.

Differentiate between
Chromatin and Chromosome.

Differentiate between
Anaphase of Mitosis and Anaphase of Meiosis-I.

Differentiate between
Gametic meiosis and Zygotic meiosis.

Differentiate between Cytokinesis and Karyokinesis.

Differentiate between
Chiasmata and crossing over.

Differentiate between
Cytokinesis in plant and animal cell

Identify the stages of mitosis given below and label the figures.

Identify the stages of meiosven below and label them.

The diagram below represents a certain stage of a cell.

(i) Is it an animal cell or a plant cell ? Give one reason in support of your answer.
(ii) Label the parts numbered 1 – 3.
(iii) Which stage (phase) of mitosis is represented in this diagram

(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.

The diagram below represents a stage during cell division. Study the same and then answer the questions that follow: 

1. Name the parts labelled 1, 2, and 3.
2. Identify the above stage and give a reason to support your answer.
3. Mention where in the body this type of cell division occurs.
4. Name the stage prior to this stage and draw a diagram to represent the same.

In the given diagram name the parts labeled 1, 2, 3,4 and 5 and describe about them in short.

Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the questions that follow:

(i) Is it a plant cell or an animal cell? Give a reason to support your answer.
(ii) Identify the stage shown.
(iii) Name the stage that follows the one shown here. How is that stage identified?
(iv) How will you differentiate between mitosis and meiosis on the basis of the chromosome number in the daughter cells?

The figure below shows a certain stage of mitosis:

(i) Name the stage,
(ii) Label the parts 1 to 4
(iii) How many chromosomes are shown here?

Give a labeled diagram to illustrate amitosis.

Draw a labeled schematic representation of mitosis cell division.

Draw a duplicate chromosome and label its part.

Draw a well-labelled diagram to show the anaphase stage of mitosis in plant cells having four chromosomes.

Explain the Term Leptotene

Explain the Term Zygotene

Explain the Term Pachytene

Explain the Term Diplotene

Explain the Term Cell Diakinesis

Explain the Term Cell division

Explain the Term Chromatids

Explain the Term Centromeres

Explain the Term Centrioles

Explain the Term Spindle

Explain the Term Cell Plate

Explain the Term Cleavage furrow

Explain the Term Chromosomes

Explain the Term Chromatin

Name the following:

The process by which cell divides into two equal daughter cells.

Name the following:

The type of cell division present in unicellular organisms.

Name the following:

The two kinds of cell division found in living organisms.

Name the following:

Mitosis takes place in which cells.

Name the following:

Replacement of dead cells is accomplished by which process.

Name the following:

The kind of division normally seen at the tip of the root and shoot system.

Name the following:

Microtubules form the bipolar spindle in which stage.

Name the following:

The structure responsible for initiating cell division in animal cells.

Name the following:

The part of the cell associated with heredity.

Name the following:

The process by which gametes are produced.

Name the Following

The process is responsible for the variation.

Name the Following

The kind of division takes place in the reproductive tissues.

Name the Following

The largest phase of a normal cell cycle.

Name the Following

The stage when chromosomes arrange at the equator.

Name the Following

Separation of sister chromatids takes place in which stage.

Name the Following

Stage in which the crossing-over takes place.

Name the Following

The point at which the explicated chromosomes are joined.

Name the Following

Name the stage during which nuclear membrane and nucleoli reappear.

Name the Following

‘V’ shaped chromosome having the centromere at the center.

Name the Following

Nuclear envelope and nucleoli reappear in which stage.

Name the Following

Result of uncontrolled cell division.

Give Technical Terms

The stage in mitosis when the nucleolus starts disappearing.

Give Technical Terms

The stage at which spindle fibres begin to be formed.

Give Technical Terms

The shortest phase of mitosis.

Give Technical Terms

The stage when sister chromosomes separate from their paired condition.

Give Technical Terms

The period between two successive mitotic divisions.

Give Technical Terms

Point at which two sister chromatids are held together.

Give Technical Terms

The stage at which chromosomes occurs reach the opposite poles.

Give Technical Terms

The process of cytoplasmic division.

Give Technical Terms

Division of nucleus.

Give Technical Terms

During cytokinesis when the cell plate begins in the center and moves towards the wall.

Give Technical Terms

The phase of the cell cycle during which the cell grows.

Give Technical Terms

The phase of the cell cycle in which DNA replication takes place.

Give Technical Terms

The division which brings about vegetative growth.

Give Technical Terms

The largest phase of a normal cell cycle.

Give Technical Terms

The stage at which progressive condensation and coiling of chromatin fibers.

Give Technical Terms

The stage at which synapsis in chromosomes to form bivalents.

Give Technical Terms

The stage at which the formation of chiasmata occurs.

Give Technical Terms

Crossing over occurs during the third substage of meiosis.

Give Technical Terms

The stage at meiosis at which there are two cells, each with sister chromatids aligned at the equator.

Give Technical Terms

The phase usually skipped in meiosis.

Give Technical Terms

The phase of meiosis at which homologous chromosomes are separated.

Give Technical Terms

The process during which the meiosis occurs in human beings.

Give Technical Terms

The period between Meiosis-I and Meiosis-II.

Complete the following sentence with appropriate word  :

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

Complete the following sentence with appropriate word  :

______means the splitting of the nucleus.

Complete the following sentence with appropriate word  :

The stage between Meiosis-I and Meiosis-II is called ______.

Complete the following sentence with appropriate word  :

Colchicine arrests cell division at __________.

Complete the following sentence with appropriate word  :

_______is the point at which sister chromatids are held together.

Complete the following sentence with appropriate word  :

The spindle fibers are made of _______.

Complete the following sentence with appropriate word  :

The pairing of homologous chromosomes is called _______.

Complete the following sentence with appropriate word  :

Chromosomes are _________ material.

Complete the following sentence with appropriate word  :

Polytene chromosomes are found in _________ of fly larvae.

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:

Mitosis results in four daughter cells.

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

Mitosis keeps the chromosome number constant through the generations.

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

Germ cells divide meiotically to produce gametes.

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

The alkaloid colchicine inhibits the formation of the mitotic spindle.

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.

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

Chromosomes other than sex-chromosomes are autonomous.

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

Cytokinesis takes place through cleavage furrow in animal cells.

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

Chromosomes are arranged in the form of chromatids at the equator in prophase.

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

Chromosomes are the thickest and shortest in telophase.

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

Meiosis is also called heterotypic division.

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

Prophase of meiosis-I has five sub-stages.

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

Meiosis leads to recombination of characters.

State the Location: Asters

State the Location: Cell plate

State the Location: Chromosomes

State the Location: Polytene chromosome

Write the functional activity of the following structure:

Chromosome

Write the functional activity of the following structure:

Spindle fibers

Write the functional activity of the following structure:

Chiasmata

Write the functional activity of the following structure:

Colchicine

Choose the Odd One Out

Choose the Odd One Out

Choose the Odd One Out

Multiple Choice Question:

Cytokinesis is the division of

Multiple Choice Question:

Karyokinesis is the division of

Multiple Choice Question:

Cell division occurring in somatic cells is

Multiple Choice Question:

In meiotic cell division, four daughter cells are produced by two successive divisions in which

Multiple Choice Question:

Duplication of DNA occurs in

Multiple Choice Question:

The nuclear membrane disappears in

Multiple Choice Question:

How many chromosomes are found in a cell of humans?

Multiple Choice Question:

The nuclear membrane and nucleolus become indistinguishable during

Multiple Choice Question:

The disappearance of spindle and uncoiling of chromosomes takes place in

Multiple Choice Question:

The regions where crossing-over takes place are called

Duplicated chromosomes are joined at a point termed ______.

Multiple Choice Question:

The centromere divides into two in

Multiple Choice Question:

After mitotic cell division, a female human cell will have

Multiple Choice Question:

The period between two successive mitotic divisions is

Multiple Choice Question:

The term meiosis was coined by

Multiple Choice Question:

Meiosis is also known as

Multiple Choice Question:

Meiosis occurs in

Multiple Choice Question:

The process of meiosis takes place to produce

Multiple Choice Question:

Leptotene, Zygotene, and Diplotene phases are found in

Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the terms in Column ‘II’ with a suitable idea given in Column ‘I’.