The diagram below represents a structure found in a leaf .Study the

1.	The diagram below represents a structure found in a leaf .Study the same and Answer the questions that follow :(i) Name the parts labelled A and B.(ii) What is the biological term for the above structure ?(iii) What is the function of the part labelled A ?(iv) Mention two structural features of A, which help in the functions mentioned in (iii) above.(v) Where is this structure likely to be found in a leaf ?(vi) The above structure helps in the process of transpiration. Explain the term transpiration.(vii) How many other cells are found surrounding this structure as seen in the diagram ?
Answer» (i) A-Guard cell B-Stoma. (ii) Stomatal apparatus. (iii) Regulates opening & closing of stomata. (iv) Guard cells have a thick inner wall facing the opening and a thin outer wall on the opposite side which makes it bulge outwards when rigid. (v) On the epidermis of the leaf. (vi) Transpiration is the loss of water as water vapours from the aerial parts of the plant. (vii) Five.

The diagram below represents a structure found in a leaf .Study the same and Answer the questions that follow :(i) Name the parts labelled A and B.(ii) What is the biological term for the above structure ?(iii) What is the function of the part labelled A ?(iv) Mention two structural features of A, which help in the functions mentioned in (iii) above.(v) Where is this structure likely to be found in a leaf ?(vi) The above structure helps in the process of transpiration. Explain the term transpiration.(vii) How many other cells are found surrounding this structure as seen in the diagram ?

Answer»

(i) A-Guard cell B-Stoma.

(ii) Stomatal apparatus.

(iii) Regulates opening & closing of stomata.

(iv) Guard cells have a thick inner wall facing the opening and a thin outer wall on the opposite side which makes it bulge outwards when rigid.

(v) On the epidermis of the leaf.

(vi) Transpiration is the loss of water as water vapours from the aerial parts of the plant.

(vii) Five.