answer the following questions:
Write down the main functions of roots.
Name any two roots which are modified to store food.
What are the functions of stems.
Name two tissues which help in transportation in plants.
Name any two plants in which stems are modified to store food.
What is trunk?
Define petioles and lamina.
Write any one difference between the leaf of banana and neem.
What is the main function of stomata?
What is absorption? How does it occur in plants?
What is transpiration? How does it occur in plants?
Answers
Answer:
1.The structure of roots helps themTranspiration is the loss of water from a plant in the form of water vapor. Water is absorbed by roots from the soil and transported as a liquid to the leaves via xylem. In the leaves, small pores allow water to escape as a vapor. Of all the water absorbed by plants, less than 5% remains in the plant for growth. perform their primary functions. What do roots do? They have three major jobs: absorbing water and minerals, anchoring and supporting the plant, and storing food
2.Storage roots: Many vegetables, such as carrots and beets, are modified roots that store food and water. Other examples of modified roots are aerating roots and haustorial roots.
3.Stems may be herbaceous (soft) or woody in nature. Their main function is to provide support to the plant, holding leaves, flowers, and buds; in some cases, stems also store food for the plant.
4.Xylem and phloem form the vascular system of plants to transport water and other substances throughout the plant.
5.the carrot,radishare modified roots and stores the reserve food, the ginger is a modified stem but not stores food, the potato is the good example that modified stem stores reservefood starch. The food is stored in Potatoes, Ginger etc.
5.the main woody stem of a tree as distinct from its branches and roots.
6.Petiole- Petiole is the stalk which attaches the leaf blade ( lamina) to the stem. The petiole is the transition between the stem and the leaf blade. Lamina- The lamina is the expanded portion or blade of a leaf and it is an above-ground organ specialised for photosynthesis.
8.stomata are small pores on the surfaces of leaves and stems, bounded by a pair of guard cells, that control the exchange of gases—most importantly water vapour and CO2—between the interior of the leaf and the atmosphere.
9.Absorption of water in plants is a biological process which can define as the uptake of the capillary water by the root hairs of a plant from the soil to the root xylem by many ways like respiration, transpiration and osmosis.
Explanation:
10. Transpiration is the loss of water from a plant in the form of water vapor. Water is absorbed by roots from the soil and transported as a liquid to the leaves via xylem. In the leaves, small pores allow water to escape as a vapor. Of all the water absorbed by plants, less than 5% remains in the plant for growth.
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