Chapter 25 - Ecology

Question 1

Allelopathy

Answer 1

Production of chemicals that alter growth of other plants

Question 2

Phytoalexins

Answer 2

Chemicals that kill or inhibit disease, fungi, or bacteria

Question 3

Devote all resources to growth most of life and then energy goes into single reproductive burst (like agave)

Answer 3

Big bang reproduction

Question 4

Produce seeds throughout lifetime (most trees)

Answer 4

Repeated reproduction

Question 5

Grow, reproduce, and die in one season

Answer 5

Annuals

Question 6

Grow one year, reproduce second year, then die

Answer 6

Biennials

Question 7

Produce vegetative structures that last many years

Answer 7

Perennials

Question 8

Low stress, little disturbance…

Answer 8

Large, persistent, fast growing, slow reproducing plants

Question 9

High stress, little disturbance…

Answer 9

Small, slow growing, limited reproductive ability, do not respond to nutrients

Question 10

Low stress, substantial disturbance…

Answer 10

Fast growing, small, annual, reproduce quickly

Question 11

Phenology

Answer 11

Timing of crucial events like germination, bud burst, flowering, seed production

Question 12

Primary succession

Answer 12

Formation of soil beginning stages.

Question 13

Secondary succession

Answer 13

Soil already present and surviving species in the area (burned land)