EVOLUTION AND BIODIVERSITY EXAM QUESTIONS

Question 1

distinguish between

autotrophs and heterotrophs x1

Answer 1

autotrophs produce complex organic compounds out of inorganic ones/ their own food

heterotrophs consume complex organic compounds/ eat other organisms

Question 2

distinguish between

detrivores and saprotrophs x2

Answer 2

detrivores ingest dead/non-living organic matter while saprotrophs secrete digestive enzymes on to dead or nonliving organic matter

detrivores have a gut but saprotrophs do not

Question 3

distinguish between

bryophyta and filicinophyta x3

Answer 3

bryophyta do not have true leaves/roots/waxy cuticle
filicinophyta have true leaves/roots/waxy cuticle

byrophyta do not have vascular tissues but filicinophyta have vascular tissue

bryophyta produce spores in fruiting bodies but filicinophyta produce spores on leaves

Question 4

DIFFERENCES BETWEEN ARCHAEA EUBACTERIA

Answer 4

EUBACTERIA
DNA with no proteins/histones
seldom have introns
cell walls with peptidoglycan/glycoprotein
lipids different/cell membrane with glycerol-esters
not in extreme environments
ribosomes are different (thanarchaea)

ARCHAEA
DNA with proteins/histones
usually have introns
cell walls lack peptidoglycan/glycoprotein
lipids different/cell membrane with glycerol-ether
found in extreme environments ribosomes are different (than eubacteria)