How do you make an elodea slide?

Pick off an entire healthy looking Elodea leaf, with fingers or small scissors and place it on the microscope slide. Add a drop of water (hypotonic solution) and a coverslip and observe the chloroplasts (green structures) and the cell walls.

Elodea in Tap Water To do this, place a drop of water towards one end of the slide. Using forceps, remove a small leaf from the tip of an Elodea plant and lay it flat in the drop of water. Cover with a cover slip. Observe the leaf at 40X and record your observations.

Additionally, what happens to elodea cells in distilled water? This video shows the Elodea being “rehydrated” with distilled water. The chloroplasts are spread throughout the cell both before the salt solution, and after the distilled water is put onto the slide. Distilled water represents a hypotonic solution, yet the cells do not burst because of the cell wall.

what happens when elodea is placed in saltwater?

When the Elodea was placed in the salt solution, the vacuoles disappeared and the protoplasm came away from the cell wall making the organelles appear to be clumped in the middle of the cell. Therefore, if it were placed in a hypertonic solution it would lose water and shrivel.

Where can I find elodea leaf?

However, the plants will grow in a wide range of conditions, from very shallow to deep water, and in many sediment types. It can even continue to grow uprooted, as floating fragments. It is found throughout temperate North America, where it is one of the most common aquatic plants.

How does salt affect plant cells?

Salt Sucks, Cells Swell The loss of water from this movement causes plant cells to shrink and wilt. This is why salt can kill plants; it leaches the water from the cells. The movement of water to leave an animal cell will also cause those cells to shrink and cause dehydration.

What is the difference between osmosis and diffusion?

In biology, this is a difference between the two processes. One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but in osmosis, only the solvent molecules (water molecules) cross the membrane.

What happens to an onion cell when salt water is added?

When salt water is added to onion cells, then the cells will lose water due to osmosis, this can be observed.

What are elodea cells?

This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis). Like animal cells, the cytoplasm of this plant cell is bordered by a cell membrane.

How many cells are in an elodea leaf?

Most Elodea leaves have 3 layers of cells.

What happens to elodea cells in a hypotonic solution?

Thus, a hypotonic solution has more water than the cell and water has a tendency to move (diffuse) into the cell. Placing Elodea cells into 100% water, which is more hypotonic than freshwater, also causes water movement into of the cells resulting in the swelling of the cells.

How do you observe chloroplasts?

Place a single leaf on a microscope slide, add a drop of water and a cover slip. Look at the leaf down a microscope and see if you can identify the small green chloroplasts. If you have difficulty seeing the chloroplasts, look at the cells at the edge where the leaf is very thin.

Do elodea cells have a nucleus?

This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis). Like animal cells, the cytoplasm of this plant cell is bordered by a cell membrane.

What would happen if you put a freshwater plant in salt water?

When saltwater enters the soil, the plant tries to absorb it throughout its roots like normal water. However, saltwater does not allow for osmosis through the plant tissues. It is so dense that the salt solution actually draws water out of the plant, dehydrating and eventually killing it.

What does an elodea leaf look like under a microscope?

Cheek cells, like other squamous cells in animals, appear scale-like under the microscope. Elodea leaves are composed of two layers of cells. They will appear more rectangular in shape. Elodea is a genus of fresh water plants native to North America.

Why are chloroplasts green?

Chlorophyll is a pigment found in the thylakoid membranes of the chloroplasts in the leaves. This is why plants are green. The simple answer is that plants are green because they have green chloroplasts (organelles that carry out photosynthesis). Chlorophyll is a pigment that absorbs red and blue light.

Why is elodea used in experiments?

How can I use Elodea to study photosynthesis? During photosynthesis, the plant absorbs carbon dioxide from the water and releases oxygen. Since oxygen is much less soluble in water than is carbon dioxide, the water quickly saturates with oxygen and bubbles form.