Pumice is a porous rock that can float on water. It's density is less tham 1g per cm.
an aquaruim is a place where fishes are placed with water inside it.
it will goes under the water.
We would not be able to drink the water or eat the fish.
No not every thing is made of cells. rocks are not, water is not and air is not. cells are for living things. a small germ is a single cell, a small bug is a group of many cells. and you are a very large group of cells all working together for mutual benefit.
Cutin, stomata and guard cells are used for water loss prevention. These are not needed because Elodea is a water plant.
Salt/Salt Water
Yes, it is filled with water.
When you deal with problems like this, you need to consider diffusion and osmosis. In this case, you would refer to diffusion, which is the movement of water across a membrane from high concentrations to low concentrations (to try to balance the concentrations). First consider what happens to the cells when you place the elodea leaf in the salt solution; the water in the cells tries to balance the high concentration of salt (sodium chloride) in the surrounding solution, so the water leaves the leaf, thus the cells shrink. Now when you put the elodea leaf into regular water again, there is a higher concentration of water in the surrounding environment compared to inside the leaf's cells, so in attempt to balance concentrations, water goes INTO the cells, thus the cells in the elodea leaf swell (expand).
the elodea cells swell and the cell becimes fat and dies
Yes, all cells do, to contain and protect anything inside.
Elodea cells are plant cells which are mainly found in aquatic plants which are commonly known as water weeds. They have a cell membrane, mitochondria, nucleus, ribosome and so much more.
Today I just did a lab viewing elodea cells and human cheek cells. When I viewed the Elodea cells on the highest power, I saw chloroplasts moving. They looked like tiny green spheres moving in little groups of two or more on a set of "tracks". I hope this answers the question.
water leaves the cell causeing the cell to shrink.
oxygen
The cells of the elodea leaf becomes turgid... Remember that the distilled water is hypotonic to the cell and water will move in to the cell walls creating turgidity....Just like when you go to grocery store, the produce are always sprinkled with water...This is best for plants....
If cells are placed in a hypotonic solution the cells gain water. The hypotonic solution has lower solute concentration then the cell's cytoplasm so the water will enter via osmosis.