(English Medium) ICSE Class 10 - CISCE Important Questions for Biology

Name the sex chromosomes in human males and females

What is the number of chromosomes in the gametes of human beings?

Name the following:

The number of chromosomes present in a nerve cell of a human being.

Correct the following statement by changing the underlined word:

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

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong

Centrosome.Cell wall, Cell membrane, Large vacuoles

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.

Give appropriate biological or technical terms for the following :

The condition in which a pair of chromosomes carries similar alleles of a particular character.

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

 Expand the following biological abbreviations : 
 DNA 

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.

Duplicated chromosomes are joined at a point termed ______.

Differentiate between genotype and phenotype.

Haploid number of chromosomes are found in ______.

Expand the abbreviation - DNA.