Lecture 5

Question 1

3 advantages to vegetative reproduction

Answer 1

allows existence where pollination is iffy

Low mortality

Rapid development

Question 2

2 disadvantages to vegetative reproduction

Answer 2

short dispersal

Limits evolution

Question 3

phalanx vegetative reproduction:

Answer 3

short range because inadequate

Question 4

Guerilla vegetative strategy

Answer 4

separated by distance

never dominate

Question 5

agamospermy - sexual or asexual?

Answer 5

asexual –> embryo/seed formed without sexual fusion

Question 6

autogamy –> sexual or asexual?

Answer 6

sexual –> cross fertilization

Question 7

3 advantages to sexual reproduction

Answer 7

genetic variability

more fit genotypes

seed dispersal

Question 8

2 disadvantages to sexual reproduction

Answer 8

costs (resources and structures)

Breaks establishment

Question 9

3 examples of selfing weeds

Answer 9

wild buckwheat
cleavers
hemp nettle

Question 10

4 examples of outcrossing weeds

Answer 10

perennial sow thistle
common toadflax
purple loosestrife
russian thistle

Question 11

3 reasons for seed dispersal

Answer 11

lower survival closer to parent
protection from special disturbances
can be facilitated by special structures