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प्रश्न
Most leaves have the upper surface more green and shiny than the lower one. Why?
Give reasons/explain:
Most leaves have the upper surface more green and shiny than the lower surface.
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उत्तर
The chloroplasts are concentrated in the upper layers of the leaf, which helps cells trap sunlight quickly. Also, the epidermis is covered by a waxy, waterproof layer of cuticle. This layer is thicker on the upper surface than the lower one. Hence, most leaves have an upper surface that is more green and shiny than the lower one.
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संबंधित प्रश्न
A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a few hours. Observe the diagrams and answer the questions:
- What aspect of photosynthesis is being tested in the above diagram?
- Represent the process of photosynthesis in the form of a balanced equation.
- Why was the plant kept in the dark before beginning the experiment?
- What will be the result of the starch test performed on Leaf ‘A’ shown in the diagram? Give an example of a plant with variegated leaves
- Draw a neat labelled diagram of a chloroplast.
State one important function of chloroplasts.
The figure below represents an experiment set up to study a physiological process in plants:
(i) Name the physiological process being studied.
(ii) Explain the process.
(iii) What is the aim of the experiment?
(iv) Give a well-balanced equation to represent the process.
Draw a neat and well-labeled diagram of the Chloroplast.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Photosynthesis occurs only in plants.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
All the starch produced in a leaf remains stored in it for 2-3 weeks before it is used by other parts of a plant.
State the location:
Chlorophyll
Mention the significance of the following mineral:
Magnesium for green plants.
Chlorophyll is located in ______.
Given below are groups of terms. The first pair indicates the relationship between the two terms. Complete the second pair accordingly.
Light reaction : Gran um : : Dark reaction : ______
