Angiosperms Flashcards

1
Q

Describe the diversity of the angiosperms?

A

Size variation is very substantial. Also have the largest flower of up to 1m. 73 fold increase in flower diameter within the angiosperms.

Plant distribution isn’t equal across the world and the distribution effectively defines the biomes of the Earth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the enhancing innovations in the angiosperm clade?

A
  1. Carpel
    Fleshy ovary wall. Facilitates stigmatic surface selection and rejection. Self-incompatibility system. Pollen tube competition.
  2. Woody with vascular tissue
    Gymnosperms are entirely woody and have longer generation times so not due to this.
  3. Vessels
    Results in increased efficiency of water uptake and therefore growth rate.
  4. Herbaceous habitat in angiosperms
    Not restricted by the need for soil. Being non woody means they can grow faster.
  5. Seeds
    Gymnosperms aren’t as speciose.
  6. Flowers
    Species increased in line with flower diversification.
7. Evolution of insect/animal pollination 
Many angiosperms (83%) are insect pollinated whilst gymnosperms are wind pollinated. 
  1. Geography
    Higher species richness across monocot genera is associated with geographical variables.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the primary traits of angiosperms?

A
  1. Can live in herbaceous and non-woody habitats
  2. Flower traits
  3. Monocarpic life cycle
  4. Polyploidy
  5. Geography such as latitude and altitude
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the secondary traits of angiosperms?

A
  1. Seeds
  2. Insect and animal pollination
  3. Age of lineage
  4. Vessels/woodliness
  5. Physiological innovations
How well did you know this?
1
Not at all
2
3
4
5
Perfectly