SB2c - Growth in Plants

Question 1

What are the 4 organs of plants?

Answer 1

Leaves
Flowers
Stem
Roots

Question 2

Name the three regions involved in the growth of plants?

Answer 2

Meristem
Zone of elongation
Zone of differentiation

Question 3

What happens at the Meristem?

Answer 3

the region of cell division (mitosis

Question 4

What happens at the zone of elongation?

Answer 4

cells grow longer

Question 5

What happens at the zone of differentiation?

Answer 5

plant cells become specialised
into different types of cells eg. Root hair cells

Question 6

Describe Root hair cells and explain how they are adapted to carry their function.

Answer 6

Root hair cells have long extensions that increases surface area for
absorbing water and dissolved mineral salts

Question 7

Describe Palisade cells and explain how they are adapted to carry their function.

Answer 7

Palisade cells in the leaf have many chloroplasts that contain chlorophyll
for capturing energy from light for photosynthesis, which takes place in these
cells.

Question 8

Describe Guard cells and explain how they are adapted to carry their function.

Answer 8

Guard cells are able to change shape and to open and close the
pore/stoma between them, and contain many mitochondria to provide energy
for this

Question 9

Growth can be measured in many ways, including change in:

Answer 9

• Height
• Leaf surface area
• Mass