Question

Refer to the given diagram and answer the following questions-

i) Name the tissue given diagram represents. Define the parts labelled as 1 to 4.
ii) Name the living cells which have cytoplasm but no nucleus.
iii) What is the function of labelled part 3​

Answer 1

Answer:

The diagram given is a section of a phloem tissue in plants.

(b) The following parts are labelled:

1 – Sieve cell

2 – Phloem parenchyma cell

3 – companion cell

4 – sieve plate

(c) In plants, phloem is found in the stem and leaves as it is the tissue that conducts food, the manufactured food in the leaves needs to be transported to other plant parts.

(d) Listed below are the functions of the labelled parts:

1: Sieve cell – assists in transporting food from leaves to storage structures and other plant parts.

2: Phloem parenchyma cell – Stores fat, starch and other organic food material

3: companion cell – Facilitates the functioning of the cells of sieve tube

4: sieve plate – Dissolved organic solutes and water moves through these structures as it contains perforations.