Angiosperm Origin

Question 1

when did the angiosperms originate?

Answer 1

cretaceous

Question 2

what other changes did the world go under at this time?

Answer 2

continental drift

ocean and ocean currents changed with global climate

Question 3

why did temp fluctuations have impacts on flower diversity?

Answer 3

created a cool

flowering plant evolution occured in tropical conditions

Question 4

Whats the ABC model?

Answer 4

looking at MADS genes which underlie floral development
A ( sepal and petals)
B (petals and stamen)
C (stamen and carpel)

Question 5

what is flower evolution driven by?

Answer 5

male reproduction

Question 6

what is the cretaceous?

Answer 6

a period of diversification for plants/insects

Question 7

what are some plant responses to climate change?

Answer 7

range shifts
using plant morphology to track ecological consequences of climate change - stomata
ploidy
range shift in ploidy aligned with increasing hotter summers

Question 8

future challenges?

Answer 8

poverty, population growth, climate change, food security, land use

Question 9

what did the UN CBD adopt in 2002?

Answer 9

framework for reducing current rate of loss of biological diversity by 2010