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What is the source of ethylene gas in a plant?
d. vascular tissue.
a. root hairs b. leaf buds
c. lateral meristems
d. fruit tissues
There is a one-way movement of water and minerals from the cortex into the vascular cylinder of a root because
a. the Casparian strip is waterproof.
b. water molecules are in high concentration in the cortex
c. nutrients are in low concentration in the cortex.
d. the root pressure is low.
Plants use the energy of sunlight to
a. carry out photosynthesis.
b. carry out cellular respiration.
c.exchange gases with the muatmosphere.
d. take in water from the soil.
Which of the following terms is LEAST related to the other terms?
a. oxygen
b. stomata
c. carbohydrates
d. carbon dioxide
Vascular tissue in plants consists of
a. meristem.
b. xylem and phloem.
c. parenchyma and collenchyma cells.
d. epidermal cells.
Sagot :
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