Muscles

Q. Match the following columns.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Xylemvessels& 1.Storefoodmaterials\\ B.Xylemtracheids& 2.Obliteratedlumen\\ C.Xylemfibre& 3.Perforatedplates\\ D.Xylemparenchyma& 4.Chisel-likeends\end{array}$

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

Q.

Which of these cells is found only in the xylem of angiosperm?

1. Tracheids

2. Xylem vessels

3. Xylem parenchyma

4. Xylem sclerenchyma

Q. The muscles become shorter and thicker because of ________.

1. contraction
2. extension
3. relaxation
4. tearing

Q.

The presence of striations is a feature of

1. Blood vessels

2. Muscles of ureters

3. Stomach muscle

4. Heart muscle

Q. Question 15
Contractile proteins are found in

(a) bones
(b) blood
(c) muscles
(d) cartilage

Q. Write one specialty of each one of the following:
(iv) Cardiac muscle

Q.

Question 51
Draw well labeled diagrams of various types of muscles found in the human body.

Q. All the components of xylem are dead, except:

1. Xylem parenchyma
2. Tracheids
3. Vessels
4. Xylem fibre

Q.

Which plant tissue is given in the above picture?

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

Q. Muscles are made up of

1. Flexible tissue
2. Loose tissue
3. Contractile tissue
4. Fluid connective tissue

Q. Which among the following are the components of xylem tissue?

1. Xylem fibres
2. Companion cells
3. Tracheids
4. Vessels

Q. Striations appear in skeletal muscles due to ________.

1. Presence of many fibres
2. Presence of alternate light and dark bands
3. Compactly arranged muscle fibres
4. Presence of many blood vessels

Q. Muscles are made up of

1. Flexible tissue
2. Loose tissue
3. Contractile tissue
4. Fluid connective tissue

Q.

The tissue that fills the area around the bones is __.

Q. Bone possesses a hard matrix composed of

1. Calcium and phosphorus.
2. Calcium and magnesium.
3. Calcium and sodium.
4. Calcium and zinc.

Q. Question 7
While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?

(a) Smooth muscles contract and pull the ligament to move the bones
(b) Smooth muscles contract and pull the tendons to move the bones
(c) Skeletal muscles contract and pull the ligament to move the bones
(d) Skeletal muscles contract and pull the tendon to move the bones

Q.

Question 7
Pick the correct description for what happens in the body when we do some physical activity like running or working with your hands.

(a) Smooth muscles contract and pull the ligament to move the bones
(b) Smooth muscles contract and pull the tendons to move the bones
(c) Skeletal muscles contract and pull the ligament to move the bones
(d) Skeletal muscles contract and pull the tendon to move the bones

Q. Bones act as ________ during locomotion.

1. Levers
2. Fulcrum
3. Pulleys
4. Points