Home
Class 11
BIOLOGY
Photosynthetic organisms occur at differ...

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.

Text Solution

Verified by Experts

Plant present at various depth in ocean are mostly algae. These show great variation in tis photosynthetic pigments. These can absorb different wavelengths of light and performs photosynthesis.
Green algae-chlorophyll-a (absorbes red ) and b(absorbs blue violet ).
Brown algae-chlorophyll-a,c and fucoxanthin (absorbd yellow ).
Rhodophyceae-chlorophyll-a,d and phycoerythrin.
Promotional Banner

Topper's Solved these Questions

  • PHOTOSYNTHESIS IN HIGHER PLANTS

    NCERT EXEMPLAR|Exercise Long Answer type Question|13 Videos

  • PHOTOSYNTHESIS IN HIGHER PLANTS

    NCERT EXEMPLAR|Exercise Very short answer type Questions|12 Videos

  • NEURAL CONTROL AND CO-ORDINATION

    NCERT EXEMPLAR|Exercise LONG ANSWER TYPE QUESTIONS|3 Videos

  • PLANT GROWTH AND DEVELOPMENT

    NCERT EXEMPLAR|Exercise Long Answer Type Question|3 Videos

Similar Questions

Explore conceptually related problems

Read the following statements and select the correct ones. (i) All the colour components of the visible spectrum are available for marine plants living in different depths of the ocean. (ii) Many herbs and shurbs in rainforests adapt to photosynthesise optimally under very low light conditions as they grow under canopy trees (iii) Gradual increas in average global temperature will affect the distributional range of some species. (iv) The quality of soil does not depend upon the weathering process.

Agrabah never sleeps peacefully! A robbery has taken place at Agrabah's palace the previous night and one of the most precious treasures, a rare diamond is missing. Information received from the sources has pointed out that Essos, an allied nation is behind this robbery. Aladdin and Genie left for Essos as soon as they heard the news. On reaching there they find out that the diamond is guarded by a two-level cage, each having 9 sections. The guards placed there have to occupy 16 sections, 8 on the upper level and 8 on the lower. (The two central sections are set aside for storing weapons). There are 4 conditions for placing guards: 1. All 16 sections must be occupied. 2. No section can hold more than 3 guards. 3. Each of the four outer sides (total of both levels) must hold 11 guards. 4. The whole upper level must hold twice as many guards as the whole lower level. Although the cage facility received 3 fewer guards than expected. The facility placed the guards in conformity with these four conditions. The Aladdin asked Genie to bring back the diamond but in order to do so, Genie needs some information. He needs to find out how many guards were expected?

Some experiments were carried out using Croton sp. plants to understand the process of photosynthesis. It was observed that the leaves of the plant exposed to light for longer duration accumulated more starch. However, due to presence of pre-formed starch in the leaves, it was difficult to find the net productivity on a fixed exposure to light source. Therefore, it was necessary to obtain starch free leaves in the plant before starting the experiment. Some of the starch free leaves were coated with wax on both the surfaces. The plant was maintained under normal environmental conditions. At the end of the experiment, the wax coated leaves are likely to show _________.

NCERT EXEMPLAR-PHOTOSYNTHESIS IN HIGHER PLANTS-Short Answer Type Question
  1. Succulents are known to keep their stomata closed during the day to ch...

    Text Solution

    |

  2. Chlorophyll-'a' is primary pigment for the light reaction. What are as...

    Text Solution

    |

  3. Do reaction of photosynthesis called ,as 'Dark Reaction' need light ?...

    Text Solution

    |

  4. How are photosynthesis and respiration related to each other ?

    Text Solution

    |

  5. If a green plant is kept in dark with proper ventilation, can this pla...

    Text Solution

    |

  6. Photosynthetic organisms occur at different depths in the ocean. Do th...

    Text Solution

    |

  7. In tropical rain forests, the canopy is thick and shorter plants growi...

    Text Solution

    |

  8. What conditions enable RuBisCO to function as an oxygenase ? Explain t...

    Text Solution

    |

  9. Why does the rate of photosynthesis decrease at higher temperatures ?

    Text Solution

    |

  10. Explain how during light reaction of photosynthesis, ATP synthesis is ...

    Text Solution

    |

  11. Find out how Melvin Calvin worked out the complete biosynthetic pathwa...

    Text Solution

    |

  12. Six turns of Calvin cycle are required to generate one mole of glucose...

    Text Solution

    |

  13. Complete the flow chart for cyclic photosphorylation of the photosystm...

    Text Solution

    |

  14. In what kind of plants do you come across 'Kranz' anatomy? To which co...

    Text Solution

    |

  15. A process is occurring throughout the day, in 'X' organis. Cells are p...

    Text Solution

    |

  16. Tomatoes, carrot and chillies are red in colour due to the presence of...

    Text Solution

    |

  17. Why do we believe chloroplasts and mitochondria to be semi-autonomous ...

    Text Solution

    |

  18. Observe the diagram and answer the following . (a) Which group o...

    Text Solution

    |

  19. A cyclic process is occurring in C(3) plant, which is light depende...

    Text Solution

    |

  20. Suppose Euphorbia and Maize are grown in the tropical area. (a) Which...

    Text Solution

    |