1. What are the four key environmental limitations to plantgrowth, considered at global-
scale?
2. What are the major environmental factors that influencedecomposition rates in
ecosystems?
3. Stomata are first seen in plant fossils from about 420 millionyear ago (Mya). List one
advantage and one disadvantage of stomata.
4. Cuticles are first seen in plant fossils from about 450 millionyear ago (Mya). List one
advantage and one disadvantage of cuticles.
5. An important evolutionary advance seen in angiosperms is thatvascular tissue is largely
made up of vessels rather than tracheids. Describe one keyadvantage and one key
disadvantage of vessels over tracheids.
6. Give two reasons why bryophytes are generally constrained to wethabitats.
7. The most central and abundant enzyme in photosynthesis is
dominant pigment is_______.
while the
8. At what time of day does dark respiration happen?
9. C4 photosynthesis relies on several enzymes, most especially theinitial fixation step
which is catalysed by the enzyme called______________ .
10. Name 4 of the largest (most speciose) plant families inAustralia.
11. Name one characteristic plant genus in each of these Australianvegetation types:
a. Chenopod shrubland
b. Mallee woodland
c. Mulga woodland
d. Savanna
12. What functional roles do root hairs and mycorrhizas have incommon?