Answer:
1) pathway taken by water
water is absorbed from the soil, through the root hair cells and is transported by the xylem vessel up the stem to the leaf and/or flowers. From the leaf, some water is lost to the atmosphere as vapors escape out through the stoma present in the lower epidermal layer of the leaves.
2) water potential gradient
water potential refers to the concentration of water present. A gradient forms when there is a difference between the concentrations of water in two regions separated by a partially permeable membrane.
Hence, water moving down a water potential gradient means that it goes from a region of high water potential to a region of low water potential.
3) There are tiny openings on the lower side of the leaves called as stomata (plural: stoma) that allow for gaseous exchange to occur. These openings are controlled by guard cells which are open during the day and close during the night.
Hope that answers the question, have a great day!
A Balance tool is what you need
No. Below 1000m the sunlight could not reach therefore plant like organism would not be able to grow there. However if the organism does not need sunlight then it might have a small chance of survival. Of course there also is the water pressure that can also pose a problem. So I say No.
Answer and Explanation:
The use of pesticides and fertilisers leads to soil pollution. These are often not easily biodegradable and so they accumulate in the soil and kill soil organisms. Rain water run-off may carry such chemicals into streams,rivers and lakes. These toxic chemicals can eventually find their way into the tissues of different organisms associated with aquatic ecosystem.
The accumulation of silt due to poor cultivation along the river banks and the destruction of riverine leads to soil erosion. The deposition of silt near the mouth of river makes the water turbid and so impedes the penetration of sunlight. This affects the aquatic organisms and pollute the water.
