ecology review

ecology review - 1 Ecology the study of relationships...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Ecology – the study of relationships between organisms and their enviornment 2. see table 3. Osmoregulation 1. Fish a. Marine i. Fluids hypoosmotic to the seawater (less conc. Of ions) 1. lose water to surrounding envio across gills = must drink water 2. rid extra salt of drinking a. specialized “chloride” cells on gills – NaCl b. b. Freshwater i. Fluids hyperosmotic to surrounding freshwater (Higher ion conc.) 1. Do not drink water a. Have too much cuz osmotic gradient (low → high) ii. Dilute urine (minimal ion loss) iii. Actively absorb ions and pump out excess H2O 2. Sharks i. Fluids hyperosmotic to seawater, but hypoionic 1. inorganic ions constitute 1/3 of solute (urea, TMAO) a. rest is inorganic, causing slow intake of H2O, while maintaining healthy salt levels 2. Excrete excess salt through salt gland near anus 4. easy 5. hyperosmotic. See quiz 1 6. easy 7. easy 8. phenotypic plasticity – ability of an individual to adapt to its environment 9. Thicker leaves decrease the surface area to volume ratio, producing less water evaporation relative to its photosynthetic ability. Also, the leaves may wilt, again decreasing its surface area in the direct sun, as opposed to being as big as possible in the shade. 10. Light compensation point - level of sunlight at which the amount of CO2 being incorporated into sugars during photosynthesis is equal to that being released during
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

ecology review - 1 Ecology the study of relationships...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online