Chapter:

Transport-in-Plants

1. BOD stands for


2. Study following ststements regarding organic farming and select correct ones.
(i) It utilities genetically modified crops like Bt cotton.
(ii) It uses only naturally produced inputs like compost and biofertilisers.
(iii) It does not use pesticides and urea.
(iv) It produces vegetables rich in vitamins and minerals.


3. Ozone layer depletion is caused by


4. The enhanced growth of water hyacinth in lakes can be due to


5. Which of following is not a green-house gas?