Ecology Table

		Brown	Green-brown	Green
30 clicks	Eaten	14	7	8
	Survived	2	9	8
30 seconds	Eaten	9	7	12
	Survived	7	9	4

Which color of walkingstick was easiest to find? Which was hardest? Why do you think that was the case?

The brown walking stick was easiest to find. That was the case because the brown walking stick contrasted the most between the 3 types of walking stick.

Which color of walkingstick survived best when there was a time limit on feeding? Why do you think that color survived best?

The green-brown walking stick survived the best when there was a time limit on feeding. I think that color survived best because it managed to camouflage itself very well in the bushes and was hard to spot.

Discuss the results of the walkingstick predation in terms of adaptations.

The different types of walkingstick are adapted with different colors so as to camouflage themselves easier in accordance to the habitat they were in which was bushes.

Osmosis

Using figure 1 and 2 above, describe what you think happened to the plant cells in each of the figure. What does it mean by hypertonic and hypotonic?

Figure 1:

When the solution is hypertonic, the solution will be of a higher concentration compared to the cell. Thus, the cell will shrink. However, when the solution is hypotonic, the solution will be of a lower concentration compared to the cell. Thus, the solution will enter the cell but because it has a cell wall, the cell will not burst.

Figure 2:

For the 1st picture in Figure 2, the arrows are the same size thus it shows a same amount of concentration from both sides and the same number of molecules are moving. For the 2nd picture in Figure 2, the higher arrow is smaller compared to the lower area. This shows that there is more solute going into the cell.

Summary

• List the factors that affect diffusion

This information is already posted before this but I'll just post it again:)

Factors:

Temperature

Size of the molecules

Steepness of the concentration gradient

Summary

• Describe the movement of molecules with respect to concentration gradient

The molecules will move from the area with a higher concentration gradient towards the area with a lower concentration gradient until they reach a state of equilibrium

Summary

• Define diffusion

Diffusion is the process whereby the molecules move from the region of higher concentration to a region of lower concentration

Summary

• What is concentration gradient

Concentration gradient(increase or decrease in the quantity) is the change of the amount of concentration in the solute(minor component in a solution) across distance.

That was kind of copied from the website. For me, what I understand from concentration gradient is... The 'Concentration' will be the number of flux arrows drawn to each side... If there are more molecules at one side and less at the other, then there will be 2 arrows drawn at the side where there are more molecules connecting to the other side.

Diffusion

5. Can you name some examples of diffusion in a living organism?

Respiration - the oxygen breathed in will have to be evenly distributed in the parts of the body