Question

15. Which of the following is used by green plants for the manufacture of sugar?
a. Carbon dioxide
b. Sunlight
Water
d. All of the above
16. Aquatic plants with floating leaves :
a. do not have stomata
b. have stomata on both surfaces.
have stomata only on the
d. have stomata only on the upper
lower surface.
surface.​

Answer 1

Answer:

15 all of the above/16 d is the correct answer

Explanation:

Answer 2

15. The correct option is  ' d ' ( All  of the above )

Explanation: Plants take up water and minerals from the soil through their roots and carbon dioxide through their leaves. The chlorophyll uses light energy from the sun to combine carbon dioxide and water to produce food.

16. The correct option is ' d ' ( have stomata only on the upper

lower surface)

Explanation: Aquatic plants float on the surface of the water and therefore stomata are not found in the lower epidermis. Stomata are found on the upper epidermis because of the direct exchange of gases between the leaf and the atmosphere. But in the terrestrial plants, stomata are at the lower epidermis because this is an adaption to reduce the excessive loss of water through transpiration.