Biology
Draw a neat diagram of a simple, petiolate leaf showing reticulate venation and label its seven important parts. Answer the following questions:
(i) Write one important function of axillary buds.
(ii) What are the two main function of leaves ?
(iii) Name two plants which have leaves with serrated margins.
(iv) Why do some plants have tendrils (modified leaflets) ?
(v) Name a plant in which the leaves are modified into spines.
Leaf
13 Likes
Answer
Diagram:
(i) One important function of axillary buds is to develop into lateral shoots or branches, contributing to the plant's overall growth and structure.
(ii) The two main functions of leaves are:
- Photosynthesis — The process by which a plant leaf prepares or synthesises food from water and carbon dioxide in the presence of chlorophyll and sunlight is called photosynthesis.
- Transpiration — This is the process by which water is lost in the form of water vapour by evaporation from the surface of leaves and other aerial parts of a plant. It has a cooling effect and develops a suction force to make roots absorb more water with mineral ions.
(iii) China rose and Rose.
(iv) In case of certain weak-stemmed plants, leaves or leaflets are modified into wiry, coiled structures called tendrils. They are sensitive to touch. As they touch any object, they coil around it and support the plant to climb up.
(v) Cactus
Answered By
6 Likes
Related Questions
Distinguish between the following pairs on the basis of the words indicated in the brackets []:
Pine and peepal [shape of the leaf].
Distinguish between the following pairs on the basis of the words indicated in the brackets []:
Reticulate and parallel venation [2 examples of each].
The figures given below show three insectivorous plants. Study the same and answer the following questions :
A
B
C
(i) Name the plants shown as A, B and C.
(ii) For which specific nutritional element do these plants trap insects ?
(iii) In which Indian state is plant A found abundantly ?
(iv) Which part of the leaf is modified into a pitcher in plant A ?
(v) Write one specific feature of the soil in which these plants usually grow.
The figures given alongside represent the different kinds of leaf arrangements on the stem. Study the figures and answer the following :
(i) a technical term for the arrangement of leaves on the stem.
(ii) Name the three kinds of arrangements shown in the figure A, B and C respectively.
(iii) Give one example of each kind of arrangement.