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Some early experiments on phototropic cu...

Some early experiments on phototropic curvature in grasses led to discovery of

A

Auxins

B

Gibberellins

C

Cytokinins

D

None of the above

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The correct Answer is:
A
Some early experiments on phototropic curvature in grasses led to discovery of auxins
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A2Z-PLANT GROWTH AND DEVELOPMENT-Section A : Topicwise Questions Topic 3 : Plant Growth Regulators (characteristics And The Discovery
  1. The following experiment demonstrate that the

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  2. The discovery of each of the five major groups of PGRs (auxin, GA, cyt...

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  3. Who confirmed the release of a volatile substance from ripening orange...

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  4. Who observed that the coleoptiles of canary grass responded to unilate...

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  5. Auxin was isolated from tips of coleoptiles of

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  6. Who reported the appearance of symptoms of the Bakane disease in uninf...

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  7. In the above observation, the active substances were later identified ...

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  8. Cytokinesis promoting active substance is called kinetin which is iden...

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  9. Who observed that from the internodal segments of tobacco stems the ca...

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  10. During mid-l960s, three independent researchers reported the purificat...

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  11. Bending of stem/coleoptile towards light or shoot of potted plant plac...

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  12. Who first suggested presence of growth regulatory chemicals in plants ...

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  13. Plant grwoth hormones extracted from a fungus and a fish are respectiv...

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  14. Which one of the following is a natural growth inhibitor ?

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  15. Bakane disease of Rice is due to

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  16. Bakane disease leads to the discovery of which phytohormone (PGR)

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  17. Some early experiments on phototropic curvature in grasses led to disc...

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  18. Hormone discovered through tissue culture technique is

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  19. Gibberellin was first isolated from

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  20. Kinetin is

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