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प्रश्न
Are the following statement true or false? Give a reason in support of your answer.
If you immerse a leaf intact on the plant in ice cold water, it will continue to photosynthesise in bright sunshine.
पर्याय
True
False
उत्तर
This statement is false.
Explanation:
Ice cold water will hamper the process of photosynthesis in the immersed leaf, even if there is sufficient sunshine, because temperature is an important factor in the rate of photosynthesis.
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संबंधित प्रश्न
Cytoplasm : Cytokinesis : : Nucleus : __________
Identify the odd one in each set : Transpiration, Photosynthesis, Phagocytosis, Guttation
Define the following:
Organic food
The figure given below represents the vertical section of a leaf.
( i) Name the parts labeled 1 to 5.
( ii ) What do the two arrows (dotted and solid) indicate in the daytime and at night?
( iii) Could you add one more arrow in the figure? If yes, what for?
( iv) How many leaf veins have been shown in this section?
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The following statement is about photosynthesis in a green plant. Write whether it is True or False.
The raw materials for photosynthesis include water and carbon dioxide.
Choose the correct answer:
In a typical leaf, photosynthesis occurs mainly in ___________
During photosynthesis, the oxygen in glucose comes from
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Respiration and photosynthesis (gas released)
Complete the following food chain by writing the names of appropriate organisms in the blanks:
→ __________ → __________ → Hen → Man
Name the following:
Source of oxygen given out in photosynthesis.
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Radiant energy is converted into chemical energy by photosynthesis.
Write the functional activity of the following structure:
Stroma
Choose the correct option.
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Photosynthesis converts energy X into energy Y.
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- Green plants are autotrophic in their mode of nutrition. Why?
Oxygen is used for the synthesis of protein and fertilizers.
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Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.
| Stimulus | Light | Gravity |
| Shoot | + | - |
| Root | ? | + |
Mention four factors required for photosynthesis?
Study the diagram given below and fill in the blanks with suitable words:
In order to prove that carbon dioxide is necessary for
(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.
