MCQs Botany-15

MCQs Botany-15

1. Which nitrogenous base is unique to RNA and not found in DNA?

 
 
 
 

2. Which statement is true about ethylene?

 
 
 
 

3. What is a food chain?

 
 
 
 

4.

Which of the following is needed in both photosynthesis and respiration?
 
 
 
 

5. Cytochromes are a group of biochemicals found in ———

 
 
 
 

6. Which is a precursor to ethylene in plants?

 
 
 
 

7. What is the main pigment involved in the transfer of electrons in photosynthesis?

 
 
 
 

8. Which hormone is responsible for causing the closure of stomata?

 
 
 
 

9. ———– is the shallow zone of a lake or ocean where most aquatic plants grow

 
 
 
 

10. Grasses are more sensitive to _________

 
 
 

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