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Question
State the main functions of the following:
Cytokinins
Solution
Cytokinin are class of plant growth substances that promote cell division or cytokinesis in plant root and shoots.
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RELATED QUESTIONS
Differentiate between the following pairs on the basis of what is indicated in the brackets.
Leaf and Liver [form in which glucose is stored]
Name the following:
The products that are formed as a result of photosynthesis.
Which one chemical reaction occurs during photosynthesis?
Name the following:
The first form of food substance produced during photosynthesis.
Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.
Explain briefly the role of the following structures in this process is Stomata.
What is the importance of photosynthesis in the life of the following:
Animals
The figure below represents the vertical section of a leaf:
(i) Name the parts 1 to 5.
(ii) How many veins have been shown?
(iii) State the functions of parts 4 and 5.
Name the following:
The immediate product of photosynthesis.
Give technical term:
In photosynthesis radiant energy is converted into which from?
Give technical term:
The part of the chloroplast where the dark reaction of photosynthesis takes place.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The dark reaction of Photosynthesis is light-independent.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Photosynthesis can also occur n artificial light such as that of a 100-watt electric lamp.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with the suitable idea given in Column ‘I’.
| Column I | Column II | ||
| (i) | Grana | (a) | Decomposers |
| (ii) | Autotrophs | (b) | Light reaction |
| (iii) | By-products of photosynthesis | (c) | Animals |
| (iv) | Photolysis | (d) | Oxygen |
| (v) | Bacteria and fungi | (e) | Stimulated by light |
| (vi) | Chloroplast | (f) | Power |
| (vii) | Oxygen and water | (g) | Raw material |
| (viii) | Sunlight | (h) | Machinery |
| (ix) | CO2 and water | (i) | End products |
| (x) | Glucose (sugar) | (j) | Workrooms |
| (xi) | Cells in the leaf | (k) | By-products. |
Photosynthesis converts energy X into energy Y.
- What are X and Y?
- Green plants are autotrophic in their mode of nutrition. Why?
A plant is kept in a dark room for about 24 hours before conducting any experiment on photosynthesis in order to ______.
In leaves, the food is stored in the form of ______.
Draw the structure of the stomata and label the parts.
An organism A which cannot move from one place to another makes a simple food B from the substances C and D available in the environment. This food is made in the presence of green-colored substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. Does this food give a blue-black color with iodine solution?
a. What is
- organism A
- food B?
- food H?
b. What are C and D?
c. Name green-colored substance E and organ F.
d. What is the process G?
Which of the following is not applicable to the process of photosynthesis?
Define the following term:
Photolysis of water
