Week 10 Animal Excretion/Respiration

Question 1

Homeostasis?

Answer 1

Maintaining a ‘steady state’ or relatively constant internal environment

Question 2

How do aquatic and terrestrial animals maintain water balance?

O-
O-

Answer 2

Osmoconform

Osmoregulate

Question 3

3 main products of nitrogenous waste excretion?

A-
U-
U- Acid

Answer 3

Ammonia
Urea
Uric Acid

Question 4

Principles of gas exchange?

Answer 4

Rate of diffusion 
Surface area (SA) to volume (V) ratio
Slow process over a long distance

Question 5

Open circulatory system?

where h- surrounding body tissue as the circulatory fluid

Answer 5

hemolymph

Question 6

Closed circulatory system?

where i- fluid surrounding body tissue is distinct from blood acting as the c- fluid

Answer 6

interstitial

circulatory

Question 7

Gills
Countercurrent exchange system?

b- flows in the opposite direction to water p- over the gills

Answer 7

blood

passing

Question 8

Trachea?

are e- network of thin-walled tubes of c-

Answer 8

extensive

chitin

Question 9

MAMMALIAN BREATHING?

Mammals ventilate their lungs by n- pressure breathing, which p- air into the lungs.

Answer 9

negative

pulls