Page 81 - Understanding NCERT Science 09

• The different types of connective tissues in our body include
areolar tissue, adipose tissue, bone, tendon, ligament,
cartilage and blood.

• Striated, unstriated and cardiac are three types of muscle
tissues.
• Nervous tissue is made of neurons that receive and
conduct impulses.

Exercises

1. Define the term “tissue”.
2. How many types of elements together make up the xylem
tissue? Name them.
3. How are simple tissues different from complex tissues in
plants?
4. Differentiate between parenchyma, collenchyma and
sclerenchyma on the basis of their cell wall.
5. What are the functions of the stomata?
6. Diagrammatically show the difference between the three
types of muscle fibres.
7. What is the specific function of the cardiac muscle?
8. Differentiate between striated, unstriated and cardiac
muscles on the basis of their structure and site/location in
the body.
9. Draw a labelled diagram of a neuron.
10. Name the following.
(a) Tissue that forms the inner lining of our mouth.
(b) Tissue that connects muscle to bone in humans.
(c) Tissue that transports food in plants.
(d) Tissue that stores fat in our body.
(e) Connective tissue with a fluid matrix.
(f) Tissue present in the brain.
11. Identify the type of tissue in the following: skin, bark of
tree, bone, lining of kidney tubule, vascular bundle.

70 SCIENCE

Rationalised 2023-24