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Action spectrum of photosynthesis was fi...

Action spectrum of photosynthesis was first studied by

A

Julius von Sachs

B

Cornelius van Niel

C

T.W. Engelmann

D

Jan Ingenhousz

Text Solution

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The correct Answer is:
C
He split light into its spectral components (VIB-GYOR) by using a prism and then illuminated a green alga (Cladophora) placed in the suspension of aerobic bacteria. The bacteria were used to detect the sites of `O_(2)`, evolution.
Engelmann observed that bacteria accumulated mainly in the region of blue and red light of split spectrum. A first action spectrum of PHS was thus described.
.Algae often float on surface of water during day but sink down during night due to evolution and trapping of oxygen bubbles during the day in their PHS.
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A2Z-PHOTOSYNTHESIS IN HIGHER PLANTS-Section D : Chapter End Test
  1. Action spectrum of photosynthesis was first studied by

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  2. Both respira

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  3. the empirical formula for chlorophyll a is

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  4. The precentag of light energy utilized for photosynthesis by highe...

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  5. Chlorophyll b is

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  6. Th.: process of photosy,1thesis is

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  7. Complete girdling ultimately kills the tree due to

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  8. when cell ceonverts light energy into chemical energy, which of the fo...

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  9. Chief functions of leaves are

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  10. Synthesis of ADP+ Pi ~ ATP in grana photosynthesis is

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  11. the number of chlorophyll molecules in a quantasome id

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  12. Algae often float on surface of water during day but sink down during ...

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  13. The size of chlorophyll molecule is

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  14. Which is correct about chlorophyll a and b in leaves of higher plants?

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  15. Cytochromes are

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  16. Formation of ATP in photosynthesis and respiration is an oxidation pro...

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  17. Photosynthetic enhancement with flashing light was first observed by

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  18. PS II contains a non-chlorophyllous pigment in blue-green algae

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  19. Which of the following photosynthesis bacteria have both PS-I and PS-I...

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  20. The first experiment on photosynthesis in flashing light were c...

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  21. At high oxygen concentration, the rate of photosynthesis decreases due...

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