26. The principle pathway of water translocation in angiosperms is

1. 1. Sieve cell

   
   
   

   2. Sieve tube elements

   
   
   

   3. Xylem vessel system

   
   
   

   4. Xylem and phloem

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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27. The oxygen in photosynthesis is released from

1. 1. CO₂

   
   
   

   2. H₂O

   
   
   

   3. Both CO₂ and H₂O

   
   
   

   4. Chlorophyll

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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28. Naturally accurring auxin is

1. 1. IAA

   
   
   

   2. Ethyle

   
   
   

   3. 2, 4-D

   
   
   

   4. Benzal dehyole

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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29. Auxin is a

1. 1. Growth catylser

   
   
   

   2. Growth destroyer

   
   
   

   3. Growth hormone

   
   
   

   4. Growth inhibitor

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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30. Different steps in respiration are controlled by

1. 1. Auxins

   
   
   

   2. Sugar

   
   
   

   3. Enzymes

   
   
   

   4. Kinins

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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