plant lecture 3

Question 1

Why are plant studies important?

Answer 1

• better crop breeds
• with climate change, plants are going to have to deal with more hostile conditions
• rapid increase in population means that more plants are needed

Question 2

In what ways do plants have a simple body plan?

Answer 2

• fewer organ types

Question 3

Where are apical and axillary meristemic tissue located?

Answer 3

located externally

Question 4

Where are the peristyle, cambium located?

Answer 4

located internally

Question 5

What do meristematic tissue look like?

Answer 5

• Dome or ring-shaped

- Cuboidal, small cells with thin walls, large nuclei, small vacuoles

Question 6

What body body plan are gymnosperms similar to?

Answer 6

eudicots

Question 7

What is morphogenesis?

Answer 7

the development of body form and organisation

Question 8

What is cell differentiation?

Answer 8

the process by which cells with the same genes become different from each other

Question 9

What is developmental plasticity?

Answer 9

describes the effect of environment on development

Question 10

How is the aquatic plant Cabomba caroliniana an example of developmental plasticity?

Answer 10

forms different leaves depending on whether or not the apical meristem is submerged

Question 11

What process accounts for the increase in plant size?

Answer 11

Cell division in meristems increases cell number and the potential for growth.

However, cell expansion (mainly elongation)