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

Complete the following sentence with appropriate word:
The chamber of heart which pumps blood into aorta is __________.

Complete the following sentence with appropriate word:
 The membranous covering of the heart is _______.

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

Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The walls of auricles are thicker than those of ventricles.

State the Location:

Tonsils

State the Location: Spleen

State the Location: Bicuspid value

State the Location: Bundle of His

Give the functions of the spinal cord?

Give Technical Term:
The brain and spinal cord together constitute the system known as.

Give Technical Term:
The fluid which fills the central canal of the spinal cord.

The diagram given below shows the internal structure of the spinal cord, depicting a simple reflex. Study the same and then answer the questions that follow:

(i) Name the parts numbered 1 to 5.
(ii) Using the letters of the alphabet shown in the figure indicate the direction in which an impulse enters and leaves the spinal cord.
(iii) What is the term given to the point of contact between two nerve cells?
(iv) What is meant by ‘simple reflex’ ? Give two examples of simple reflexes and name the stimuli too.
(v) How does the arrangement of nerve cells in the spinal cord differ from that in the brain?

The diagram given below represents the spinal cord of a mammal, seen in a transverse section together with the nerves. Study the diagram and then answer the questions given below:

(i) Label the parts 1—8 indicated by guidelines.
(ii) What do the arrows indicate? What is the pathway indicated termed?
(iii) What type of nerve is shown in the diagram?

Complete the following sentence with appropriate word :
 The part of the central nervous system which responds to the reflex action is ________.

Mention, if the following statement is True or False
Spinal nerves are twelve pair

How are cytons and axons arranged in the spinal cord?

Name the following:

The organelle that forms the aster during cell division.

Given below is the transverse section of the spinal cord. Read the information below the diagram and fill in the blanks:

The spinal cord extends from the medulla oblongata of the brain and runs down through the whole length of the vertebral column. The spinal cord is covered by the meninges. It conducts impulses from the skin and muscles to the brain. It also conducts impulses from the brain to the muscles of the trunk and limbs.

The spinal cord is a part of the (a) ______ Nervous System. The grey matter in the picture given above consists of (b) ______ while the white matter consists of (c) ______. The spinal cord is concerned with the (d) ______ actions below the neck. (e) ______ is the bony structure that protects the spinal cord.

Ventricles have ______ walls when compared with those of auricles.

Can you answer why the pulmonary artery shown in Fig. is blue in colour?