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| Term | Definition |
|---|---|
| Explain why transpiration is essential for water movement | Transpiration occurs when the stomata is open and the humidity of the ambient air is lower than that of the tissues, exposed when stomata are open. The loss of water below the stomata leads to achain reaction(domino effect) of changing water potential that leads to water moving from one cell into the other. From the xylem to the mesophyll, and out. whitin the xylem, the cohesion-tension theory of water molecules pulls the water column upward. |
| how many alleles occur in a haploid cell? | one |
| how many alleles occur in a diploid cell? | two |