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

Name the semi permeable membrane present in a plant cell.

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

Arrange and rewrite the term in the group in the correct order so as to be in a logical sequence, beginning with the term that is underlined.

Cell membrane, Chromatin fibres, Cell wall, Cytoplasm.

Synthesis phase in the cell cycle is called so, because of the synthesis of more:
A. RNA
B. RNA and proteins
C. DNA
D. Glucose

Study the diagram given below which represents a stage during the mitotic cell division and answer the questions that follow

(i) Identify the stage giving suitable reasons.
(ii) Name the parts numbered 1 and 2.
(iii) What is the technical term for the division of nucleus?
(iv) Mention the stage that comes before the stage shown in the diagram. Draw a neat labelled diagram of the stage mentioned.
(v) Which is the cell division that results in half the number of chromosomes in daughter cells?

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

State the exact location of the Centromere

The given diagram shows a stage during mitotic division in an animal cell

(i) Identify the stage. Give a reason to support your answer.
(ii) Draw a neat labelled diagram of the cell as it would appear in the next stage. Name the stage.
(iii) In what two ways is mitotic division in an animal cell different from the mitotic division in a plant cell?
(iv) Name the type of cell division that occurs during :
A. Growth of a shoot
B. Formation of pollen grains.

Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase

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?

Name the sex chromosomes in human males and females

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

After mitotic cell division, a female human cell will have

A. 44 + XX chromosomes

B. 44 + XY chromosomes

C. 22 + X chromosomes

D. 22 + Y chromosomes

Given below is a diagram representing a stage during mitotic cell division. Study it carefully and answer the questions which 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 which 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?
(v) Draw a duplicated chromosome and label its parts.

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.

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 ______.