Question 21. 21. Roots absorb carbon dioxide and leaves absorb oxygen which is u

Question

Question 21.21. Roots absorb carbon dioxide and leaves absorb oxygen which is used in photosynthesis.        True
       False Question 22.22. Bacteria should never be allowed to come in contact with agricultural crops. Farmers must treat crops with antibiotics to kill it all.        True
       False Question 23.23. Cohesion (water molecules stick to each other) and adhesion (water molecules stick to something else) aid plants in the process of transpiration.        True
       False Question 24.24. There are no guidelines for organic farmers in the United States. They can use any products or fertilizers on planted crops.        True
       False Question 25.25. Compared to more conventional agriculture, organic farming uses fewer synthetic chemicals.        True
       False Question 21.21. Roots absorb carbon dioxide and leaves absorb oxygen which is used in photosynthesis.        True
       False

Explanation / Answer

Q21. False

Plants absorb carbon dioxide from the air, through the stomata present in their leaves.

Q22. False

As the crops are sowed they eventually contact soil bacteria which help plant growth by nitrogrn fixation. Antibiotics will have adverse effects.

Q23. True

transpiration pull-The cohesion of water explains the upward movement of the water in xylem

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