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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? - Biology

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प्रश्न

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?

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उत्तर

Photosynthetic organisms occur at different depths in the ocean. They do not receive qualitatively and quantitatively the same light. The spectral quality of solar radiation is also important for life. The UV component of the spectrum is harmful to many organisms while not all the colour components of the visible spectrum are available for marine plants living at different depths of the ocean. Plants at great depth contain some accessory pigments that can easily capture light.

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अध्याय 13: Photosynthesis in Higher Plants - Exercises [पृष्ठ ७२]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
अध्याय 13 Photosynthesis in Higher Plants
Exercises | Q 6. | पृष्ठ ७२

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?


Short answer question.

Why do leaves generally look green?


Short answer question.

Which four of the following are needed for photosynthesis in a leaf:
(i) Carbon dioxide:
(ii) Oxygen:
(iii) Nitrates :
(iv) Water:
(v) Chlorophyll:
(vi) Soil:
(vii) Light: 


Short answer question.

Which gas is taken in and which one is given out by the leaf in bright sunlight?  

(i) Taken in :
(ii) Given out:


State whether the following statement is True or False: 

Green plants prepare their food by using two raw materials, oxygen and water.


State whether the following statement is True or False: 

The chlorophyll enables the plants to use light energy.


State whether the following statement is True or False: 

The free oxygen in the atmospheric air is the result of photosynthesis.


State whether the following statement is True or False:  

Photosynthesis occurs only in chlorophyll-containing parts of the plant. 


Answer the following in one word. 

Which organ is called the voice box?


Tick the most appropriate answer.  

Plants have these for the exchange of gases.


Attempt any TWO of the following: 

Describe ‘any two’ factors affecting the rate of photosynthesis. 


Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450 nm & Group B to light of wavelength of 500-550 nm. Compare the photosynthetic rate of the 2 groups giving reasons.


Process of photosynthesis is ______.  


Photorespiration is favoured by :


Law of limiting factor is


In tropical rain forests, the canopy is thick and plants growing below receive filtered light. How are they able to carry out photosynthesis?


Why does the rate of photosynthesis decrease at higher temperatures?


According to Blackman, respiration of carbohydrates and fats is ______.


The optimum temperature for the process of photosynthesis is ______.


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