Plants 3

Question 1

Other challenges to plants

Answer 1

Short growing season

Drought

Infertile soil

Frost-heaving

Permafrost

Snow abrasion

Strong winds

Question 2

Optimum photosynthesis rates of arctic plants

Answer 2

At a lower temps than normal plants

Rates are both genetically and environmentally controlled with high phenotypic plasticity

Question 3

Arctic plant productivity

Answer 3

Annual productivity is low, but daily can be as high as temperate herbaceous vegetation during growing season

Question 4

Flowering

Answer 4

Flower buds are pre-formed the year before

Question 5

Pollination

Answer 5

Mostly insect pollinated but wind pollination more important with increasing lattitude

Question 6

Seed production

Answer 6

Opportunistic, and dependent upon temperature during flowering period and latter half of growing season

Question 7

Onset of dormancy

Answer 7

Triggered by photoperiod, low temps, and drought

Question 8

Biopedturbation

Answer 8

Animal caused soil disturbance