Name the type of young and mature cartilage cells

1

(a)

Young cartilage cells - Chondroblasts
Mature cartilage cells - Chondrocytes

Name the different cells junctions found in tissues.

1

(a)

(i) Gap Junction 
(ii) Tight Junction
(iii) Adhering Junction

In which type of bone , bone marrow cavity is present ?

1

(a)

Bone marrow cavity is present in long bones, such as humerus , femur , etc.

What are the cellular components of haemoglobin?

1

(a)

Haemoglobin contains a protein called globin and Fe2+ (ferrous)-porphyrin complex called haeme

Plasma protein acts as acid-base buffer in the blood . Explain

1

(a)

plasma protein maintains the pH of the blood by neutralising the strong acids and bases so it acts as acid base buffers

What are the divisions of earthworm's body according to clitellum?

2

(a)

Why are blood , bone and cartilage callde connective tissues?

2

(a)

Explain the term "sclerites"

2

(a)

Earthworms are bisexual, still, the self-fertilization is not possible in them. Explain.

2

(a)

Distinguish between simple eputhelium and compound epithelium

2

(a)

Distinguish between cardiac muscles and striated muscles

2

(a)

Describe the features of exoskeleton of cockroach

3

(a)

Name the main excretory organs of cockroach. Write the structure of these organs.

3

(a)

Mention the similarities between Cardiac and skeletal muscles.

3

(a)

Mention the special features of eye in cockroach.

3

(a)

Draw a labelled diagram of reproductive organs of an earthworm.

3

(a)

Mention briefly about the circulatory system of earthworm.

3

(a)

Distinguish between a male cockroach and female cockroach.

5

(a)

Distinguish between a male frog and female frog.

5

(a)

Describe various types of epithelial tissues with the help of labelled diagrams.

5

(a)