lecture 28 - life in extreme environments

Question 1

challenges for life leaving water

Answer 1

respiration using gaseous oxygen not dissolved oxygen
mechanical support
transport water and nutrients around the plant
reproduction
waterproof tissue

Question 2

abiotic factors that affect the distribution of organisms

Answer 2

temp, water, sunlight, wind, disturbance, soil

Question 3

what factors do plants need to develop strategies for

Answer 3

stress and disturbance

Question 4

what strategies do plants have for stress

Answer 4

avoid or tolerate

Question 5

how do seeds avoid stress

Answer 5

the ability for seed to sense environmental conditions
sufficient resources and time to produce more seeds

Question 6

how do plants avoid stress

Answer 6

physiological ability to slow down metabolic rate
pre-hibernation food source

Question 7

how do plants tolerate stress

Answer 7

change their stomata

Question 8

how do plants tolerate disturbances

Answer 8

some lants have seeds that can only germinate after being burnt
ariel roots

Question 9

what is the largest antarctic land animal

Answer 9

antarctic midge

Question 10

what are the different sea levels

Answer 10

epipelagic
mesopelagic
bathypelagic
abyssopelagic

Question 11

how have marine animals adapted to surviving under pressure

Answer 11

small and gelatinous
reduced skeleton
no swim bladder or air spaces

Question 12

what is the largest antarctic land animal?

Answer 12

antarctic midge