Cartilage

Q.

Sharks skeleton is made up of _________________

1. Cartilage

2. Muscle

3. Bone

4. Cartilage and Bone

Q. Read the statements given below carefully w.r.t. bones.
(a) Bone matrix is made up of 70% inorganic matter.
(b) Ossein and chondrin proteins are present in bone matrix.
(c) The lacunae contain osteocytes that secrete new lamellae of matrix.
(d) Bone cells lie singly or in groups of 2-4 in each lacuna.
Select the option that contains incorrect statements only.

1. (a) and (b)
   
2. (c) and (d)
   
3. (b) and (d)
   
4. (b) and (c)
   

Q. Cartilage is a flexible skeletal tissue.

1. False
2. True

Q. Name the type of joint between cranial bones.

Q. Which one of the following is not a characteristic of the intercellular material of cartilage?

1. Solid
2. Pliable
3. Resists compression
4. Hard

Q. The protein found in yellow fibres

1. collagen
2. keratin
3. elastin
4. tubulin

Q.

The skeleton of chondrichthyes fishes is made up of ___________

1. Scales

2. Bone

3. Skin

4. Cartilage

Q. Read the statements given below w.r.t. cartilage and select the option that correctly identifies them as true (T) or False (F).
(a) Cartilage tissue is found more abundantly in vertebrate embryos than adults.
(b) The matrix of cartilage is solid and pliable.
(c) Chondrocytes are present in lamellae.
(d) They prevent the wear and tear of bones due to friction in the region of joints.

$\begin{array}{ccccc}& \text{A}& \text{B}& \text{C}& \text{D}\\ \left(1\right)& \text{F}& \text{T}& \text{T}& \text{F}\\ \left(2\right)& \text{T}& \text{F}& \text{T}& \text{T}\\ \left(3\right)& \text{T}& \text{T}& \text{F}& \text{T}\\ \left(4\right)& \text{F}& \text{F}& \text{T}& \text{T}\end{array}$

1. $\left(3\right)$
   
2. $\left(2\right)$
   
3. $\left(1\right)$
   
4. $\left(4\right)$
   

Q. Given figures (I and II) show two specialised connective tissues. Identify the figures I, II and the parts labelled as A and B.

1. I-Cartilage, II-Bone, A-Collagen fibres, B-Chondrocyte
2. I-Cartilage, II-Bone, A-Collagen fibres, B-Chondroclast
3. I-Bone, II-Cartilage, A-Microtubules, B-Osteoblast
4. I-Bone, II-Cartilage, A-Collagen fibres, B-Osteoblast

Q. Match the following.

$\begin{array}{cccc}\text{(A)}& \text{Adipose tissue}& 1& \text{Nose}\\ \text{(B)}& \text{Stratified epithelium}& 2& \text{Blood}\\ \text{(C)}& \text{Hyaline cartilage}& 3& \text{Skin}\\ \text{(D)}& \text{Fluid connective tissue}& 4& \text{Fat storage}\end{array}$

1. A-1, B-2, C-3, D-4
2. A-4, B-3, C-1, D-2
3. A-3, B-1, C-4, D-2
4. A-2, B-1, C-4, D-3

Q.

Match the following details of Cartilage with their terms :

$\begin{array}{cc}ColumnI& ColumnII\\ 1.\text{Outer covering layer of cartilage}& a.\text{Chondroitin}\\ 2.\text{Cells of cartilage}& b.\text{Chondrin}\\ 3.\text{Locatione space of cells in cartilage}& c.\text{Perichondrium}\\ 4.\text{Matrix of cartilage}& d.\text{Chondrocytes}\\ 5.\text{Protein in cartilage}& e.\text{Lacunae}\end{array}$

1. 1.$\Rightarrow$ d, 2.$\Rightarrow$ c, 3.$\Rightarrow$ a, 4.$\Rightarrow$ e, 5.$\Rightarrow$ b.

2. 1.$\Rightarrow$ e, 2.$\Rightarrow$ b, 3.$\Rightarrow$ d, 4.$\Rightarrow$ a, 5.$\Rightarrow$ c.

3. 1.$\Rightarrow$ a, 2.$\Rightarrow$ c, 3.$\Rightarrow$ b, 4.$\Rightarrow$ d, 5.$\Rightarrow$ e.

4. 1.$\Rightarrow$ c, 2.$\Rightarrow$ d, 3.$\Rightarrow$ e, 4.$\Rightarrow$ b, 5.$\Rightarrow$ a.

Q. what type of cartilage is present between vertebrae to allow limited movement ?

Q.

what are the cells of cartilage and bone respectively?

Q. Ram's nose started bleeding when he fell down while playing with his friends. He was terrified that he broke his nose, but was pacified by his mom who told him that nose won't break as it is made up of a flexible connective tissue known as

1. ligament
2. tendons
3. bone
4. cartilage