thermoregulation

Question 1

what is an endotherm?

Answer 1

an organism that uses heat from metabolic reactions to maintain body temperature

Question 2

what is an ectotherm?

Answer 2

an organism that relies on external sources of heat to maintain body temperature

Question 3

methods of thermoregulation in endotherms

Answer 3

insulation
metabolism

Question 4

cold physiological response

Answer 4

vasoconstriction
hair stands erect
less sweat
increased respiration

Question 5

hot physiological response

Answer 5

vasodilation
hairs lie flat
less respiration in liver
fewer muscle contractions

Question 6

cold behavioural response

Answer 6

huddle
move about
remain dry
expose larger area to the sun
roll into a ball

Question 7

hot behavioural response

Answer 7

move out of sun
remain inactive
wet skin

Question 8

advantages of ectotherms?

Answer 8

les food used for respiration
more used for growth
consume less food and can survive without it for long

Question 9

disadvantages of extotherms

Answer 9

less active in cooler temperatures
increased risk of predation
geographical location restricted

Question 10

mesotherms

Answer 10

somewere between ecto and endotherms