Answer:
Root hair cell cytoplasm // Soil water
Explanation:
Water moves through the xylem vessels in a continuous transpiration stream:
root → stem → leaf
Transpiration produces a tension or ‘pull’ on the water in the xylem vessels by the leaves. Water molecules are cohesive so water is pulled up through the plant.
The transpiration stream has several functions. These include:
transporting mineral ions
providing water to keep cells turgid in order to support the plant
providing water to leaf cells for photosynthesis
keeping the leaves cool by evaporation
Root hair cells
The root hairs are where most water absorption happens. They are long and thin so they can penetrate between soil particles, and they have a large surface area for absorption of water.
Water passes from the soil water to the root hair cell’s cytoplasm by osmosis. This happens because the soil water has a higher water potential than the root hair cell cytoplasm:
Solution Water potential Concentration of dissolved solutes
Soil water High Low
Root hair cell cytoplasm Low High
Osmosis causes water to pass into the root hair cells, through the root cortex and into the xylem vessels
The cyclin begins to be destroyed at the metaphase of the cell cycle causing the chromosomes to begin to seperate.
Answer:
Her “aha” moment was when her dog Jigs fell into the outhouse by the lake.
Explanation:
Hope this helped.
Answer: True
Explanation: Plants use osmosis to transport water from the soil into their roots.
Answer:
Male: Bb
Female: bb
Explanation:
1. I made punnet squares to test each genotype pairs:
BB (black male) x bb (white female)
Bb (black male) x bb (white female)
** B is dominant over b so if Bb, black will be expressed
3. I calculated the percentage of each phenotype to see if it matched the the number of white and black guinea pigs produced. I found that Bb x bb had 50% chance for white guinea pigs and 50% chance for black guinea pigs, which is about the same in the scenario above (7 black, 6 white).
4. I infered that the male black guinea pig's genotype is Bb and the female white guinea pig's genotype is bb.
