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प्रश्न
Tick the most appropriate answer.
Plants have these for the exchange of gases.
विकल्प
spiracles and stomata
lenticels and spiracles
lenticels and stomata
buds and flowers
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उत्तर
lenticels and stomata
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संबंधित प्रश्न
Short answer question.
Why do leaves generally look green?
Long answer question.
What is the role of chlorophyll in photosynthesis?
Long answer question.
Do plants need oxygen? If so, what is its source?
Answer the following in one word.
Which organ is called the voice box?
Identify true statement regarding light reaction of photosynthesis.
When there is plenty of light and a higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.
Law of limiting factor is
Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light? How do they adapt to carry out photosynthesis under these conditions?
According to Blackman, respiration of carbohydrates and fats is ______.
The figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following question:
- At which point/s (A, B or C) in the curve is light a limiting factor?
- What could be the limiting factor/s in Region A?
- What do C and D represent on the curve?

Graph of light intensity on the rate of photosynthesis
