Unit 5 Equilibruim Excetory System

Question 1

Osmoregulation

Answer 1

Regulation of osmotic pressure of fluids and cells

Done through excretion

Question 2

Excretion purpose

Answer 2

-Kill ions + toxic compounds
-body aqueous = solute for toxic compounds
-less liquid = less toxic compounds
-regulates pH + ionic balance
-Nitrogenous waste needs to be excreted

Question 3

how diff organisms excrete

single cell:

simple invertebrate (worm)

insect (grass hopper)

reptiels + birds

Answer 3

single cell:
-contractile vacuole
-continously pump water

simple invertebrate (worm):
waste released through skin

insect (grass hopper):
cristyles

reptiels + birds:
salt glands