Muscles

Q. Why Cardiac muscles are said to be involuntary muscles?

Q. Explain the characteristic features of cardiac muscles.

Q.

Stems are

1. positively phototropic and negatively geotropic.

2. negatively phototropic and positively geotropic.

3. positively phototropic and positively geotropic.

4. negatively phototropic and negatively geotropic.

Q.

You must have noticed an increase in your heartbeat and breathing after you finish running. Are those voluntary or involuntary actions?

Q. Fill in the blanks by selecting suitable words from the list given below Thin - walled, collenchyma, vascular , tissues, conducting.
(ii) Xylem and phloem form the tissue.

Q. Find the correct match:

A. Muscles present on the front of the bone in our upper arm
B. Muscle present at the back of the bone in our upper arm
C. Muscles present in the thigh
D. Muscles present in leg
E. Muscles present in leg

1. Triceps
2. Biceps
3. Chest Muscles
4. Quadriceps
5. Flexors

1. A-2; B-1; C-4; D-5; E-3
2. A-1; B-2; C-3; D-4; E-5
3. A-4; B-3; C-1; D-5; E-2
4. A-3; B-4; C-2; D-1; E-5

Q.

Which plant tissue is given in the above picture?

1. Meristem
2. Phloem
3. Epidermis
4. Xylem

Q.

The action of ___is required for all kinds of movements.

Q. Fill in the blanks by selecting suitable words from the list given below Thin - walled, collenchyma, vascular , tissues, conducting.
(iii) Conducting tissue is also called tissue.

Q. Find the correct match:

A. Muscles present on the front of the bone in our upper arm
B. Muscle present at the back of the bone in our upper arm
C. Muscles present in the thigh
D. Muscles present in leg
E. Muscles present in leg

1. Triceps
2. Biceps
3. Chest Muscles
4. Quadriceps
5. Flexors

1. A-1; B-2; C-3; D-4; E-5
2. A-4; B-3; C-1; D-5; E-2
3. A-2; B-1; C-4; D-5; E-3
4. A-3; B-4; C-2; D-1; E-5

Q. An elephant's trunk chiefly contains which of the following?

1. Nerve endings
2. Muscle
3. Cartilage
4. Bone

Q. Coordinated contraction and relaxation of muscles causes movement.

Q.

Just like a locomotive engine, muscles can only _____.

1. pull

2. push

3. flex

4. relax

Q.

The curling action of biceps of a bodybuilder is made possible by the contraction of biceps. However, the bending of the arm occurs when the ___ pulls the bone of the forearm.

1. tendon

2. cartilage

3. none of these

4. ligament

Q.

Question 20
The muscular tissue which functions throughout the life continuously without fatigue is

(a) Skeletal muscle
(b) Cardiac muscle
(c) Smooth muscle
(d) Voluntary muscle

Q.

Which part of nervous system regulates the functions of internal organs of our body automatically?

Q. When a child is grown up, his/her heart will beat about______ times per minute.

1. 120
2. 70
3. 17
4. 30