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

Name the following:

Contraction phase of heart.

Name the following:

The structure that holds the heart valves in position.

Mention the phase of heart beat in which both the atrio-ventricular valves are closed.

What are the normal values of blood pressure in a normal human adult?

Name these:

Three components of circulatory system.

Name these:

Three circulating fluids in human body.

Name these:

Two kinds of circulatory systems in different animals.

The valve which prevents back flow of blood in the veins and lymph vessels is ______.

Given diagram is a schematic representation of the circulatory system in humans. Study the same and answer the questions that follow:

1. Label the parts 1 and 4 indicated in the diagram.
2. Which of the above mentioned number is the thickest artery? Also write its name.
3. Mention the number and chamber of the heart which has the thickest muscular wall.
4. Which of the above numbers/structures has the maximum number of blood capillaries?
5. Draw neat and labelled diagrams of the transverse section of vena cava and the part numbered as 3. Make sure to show the structural differences between these two in the diagram.

Mention where in the human body is the following located and state its main function:

Central canal

The prime source of chlorofluorocarbons is ______.

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

Draw a labelled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosomes. 

Given below are three diagrammatic sketches (A, B and C) of one and the same particular phase during mitotic type of cell division.

1. Identify the phase.
2. What is the diploid number of chromosomes shown in them?
3. Identify whether these are animal cells or plant cells? Give reasons.
4. Which of these is/are shown in the correct direction?
   1. Only A
   2. Only B
   3. Only A and C
   4. All the three

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? 

 Given below is a diagram representing a stage during the mitotic cell division. Study [5] thediagram  and answer the following questions:

Name of the nitrogenous bases. 

Distinguish between the following:

Chromoplast and chloroplast