(English Medium) ICSE Class 10 - CISCE Important Questions

According to the old convention, the colour of the earth wire is ______.

When does the nucleus of an atom tend to become radioactive?

Name the following:

The organelle that forms the aster during cell division.

Why are RBCs efficient in their functions though they lack nucleus and mitochondria?

The exchange of chromatid parts between the maternal and the paternal chromatids of a pair of homologous chromosomes during meiosis.

The diagram given below represents a certain stage of mitosis: 

1. Identify the stage of cell division.
2. Name the parts labelled A and B.
3. What is the unique feature observed in this stage?
4. How many daughter cells are formed from this type of cell division?

The diagram given below represents a certain stage of mitosis: 

1. Identify the stage of cell division.
2. Name the parts labelled A and B.
3. What is the unique feature observed in this stage?
4. How many daughter cells are formed from this type of cell division?

Correct the following statement by changing the underlined word:

Nitrogen bonds are present between the complementary nitrogenous bases of DNA.

The diagram given below represents a stage during cell division.

Study the same and answer the questions that follow:

1. Identify whether it is a plant cell or an animal cell. Give a reason in support of your answer.
2. Name the stage depicted in the diagram. What is the unique feature observed in this stage?
3. Name the type of cell division that occurs during:
   1. Replacement of old leaves by new ones
   2. Formation of gametes
4. What is the stage that comes before the stage shown in the diagram?
5. Draw a neat, labelled diagram of the stage mentioned in (iv) above keeping the chromosome number constant.

The diagram given below represents a stage during cell division.

Study the same and answer the questions that follow:

1. Identify whether it is a plant cell or an animal cell. Give a reason in support of your answer.
2. Name the stage depicted in the diagram. What is the unique feature observed in this stage?
3. Name the type of cell division that occurs during:
   1. Replacement of old leaves by new ones
   2. Formation of gametes
4. What is the stage that comes before the stage shown in the diagram?
5. Draw a neat, labelled diagram of the stage mentioned in (iv) above keeping the chromosome number constant.

Synthesis phase in the cell cycle is called so for the synthesis of more of ______.

Given below is a diagram representing a stage during the mitotic cell division. Study thediagram  and answer the following questions:

 Identify the stage by giving a suitable reason.

 Given below is a diagram representing a stage during the mitotic cell division. Study  thediagram  and answer the following questions:

 Is it a plant or an animal cell? Give a reason to support your answer. 

 Given below is a diagram representing a stage during the mitotic cell division. Study  thediagram  and answer the following questions:

Draw a neat, labelled diagram of the stage which follows the one shown in the diagram.

How many chromosomes will each daughter cell have after the completion of the above division? 

How many chromosomes will each daughter cell have after the completion of the above division? 

Differentiate between Cytokinesis and Karyokinesis.

Differentiate between genotype and phenotype.

Haploid number of chromosomes are found in ______.

Expand the abbreviation - DNA.