1) Define the term “tissue”.
ANSWER:-Tissue is a group of cells that are similar in structure
and are organized together to perform a specific task.
and are organized together to perform a specific task.
2). How many types of elements together make up the xylem
tissue? Name them.
tissue? Name them.
ANSWER :-(i) Tracheids
(ii) Vessels
(iii) Xylem parenchyma
(iv) Xylem fibres
3) How are simple tissues
different from complex tissues in plants?
different from complex tissues in plants?
ANSWER:-
5) What are the functions of the stomata?
ANSWER :-(i) They allow the exchange of gases (CO2 and O2) with
the atmosphere.
the atmosphere.
ii)The loss of excess water in the form of water vapour which is
known as transpiration.
known as transpiration.
6) Diagrammatically show the
difference between the three types of muscle fibres.
difference between the three types of muscle fibres.
ANSWER:-
7) What is the specific function of the cardiac muscle?
ANSWER:-function of the cardiac muscle is to control the
contraction and relaxation of the heart.
contraction and relaxation of the heart.
8) Differentiate between striated, unstriated and cardiac
muscles on the basis of their structure and site/ location in the body.
muscles on the basis of their structure and site/ location in the body.
ANSWER:-
| Striated Muscles | Unstriated Muscles | Cardiac Muscles |
| Unbranched fibres; with striations. | Unbranched fibres; with striations. | Branched fibres with striations. |
| Present in voluntary organs. | Present in involuntary organs. | Present in the heart. |
9 ) Draw a labelled diagram of
a neuron.
a neuron.
ANSWER:-
10) Name the following:
(a) Tissue that forms the inner
lining of our mouth.
lining of our mouth.
(b) Tissue that connects muscle
to bone in humans.
to bone in humans.
(c) Tissue that transports food
in plants.
in plants.
(d) Tissue that stores fat in
our body.
our body.
(e) Connective tissue with a
fluid matrix.
fluid matrix.
(f) Tissue present in the brain.
ANSWER:-
a) Epithelial tissue
b)Dense regular connective tissue (tendons)
c)Phloem
d)dispose tissue
e)Blood
f)Nervous tissue
11) Identify the type of tissue in the following: skin, bark of
tree, bone, lining of kidney tubule, vascular bundle.
tree, bone, lining of kidney tubule, vascular bundle.
ANSWER:-Skin: Stratified squamous
epithelial tissue
epithelial tissue
Bark of tree: Simple permanent
tissue
tissue
Bone: Connective tissue
Lining of kidney tubule: Cuboidal
epithelial tissue
epithelial tissue
Vascular bundle: Complex
permanent tissue
permanent tissue
12) Name the regions in which parenchyma tissue is present.
ANSWER:-Leaves, fruits, and flowers are the regions where the parenchyma tissue is present.
13) What is the role of
epidermis in plants?
epidermis in plants?
ANSWER:-→ It is a protective
tissue of the plant body.
tissue of the plant body.
→ It protects the plant against mechanical
injury.
injury.
→ It allows exchange of gases through
the stomata.
the stomata.
14) How does the cork act as
a protective tissue?
a protective tissue?
ANSWER:-The outer protective layer or bark of a tree is known as
the cork. It is made up of dead cells. Therefore, it
protects the plant against mechanical
injury, temperature extremes, etc. It also prevents the loss of water by
evaporation.
the cork. It is made up of dead cells. Therefore, it
protects the plant against mechanical
injury, temperature extremes, etc. It also prevents the loss of water by
evaporation.
15) Complete the table:
ANSWER:-
