Lecture 22-Growth

Question 1

Define growth

Answer 1

Irreversible increase in biomass

Question 2

Define growth in animals

Answer 2

Follows shape of S-curve: Lag phase, log phase, stationary phase.

Question 3

Define growth in plants

Answer 3

Plants grow until death, body plan is indeterminate. Meristems act as stem cells. Primary growth is upward, secondary growth is lateral and results in cork and cambia.

Question 4

Rank stemcells in order or least to most specified

Answer 4

1. Totipotent
2. Pluripotent
3. Multipotent