Slides in this set

Slide 1

Preview of page 1

B4 Summary…read more

Slide 2

Preview of page 2

Plant Cells
Contains cell sap
Cell Membrane
Allows substances
in/out of cell Cell Wall
Nucleus Cytoplasm takes place
Controls the cells Where all cell
activities reactions take place…read more

Slide 3

Preview of page 3

Leaf structure
Upper epidermis
Palisade Chloroplasts
layer Vacuole
Spongy Air spaces
layer Phloem
Lower epidermis
Stomata Guard cells
(can't see on my diagram)…read more

Slide 4

Preview of page 4

Keywords - Definitions
· Cuticle
­ waxy layer on the top of a leaf. This helps to stop water from
evaporating. A cactus has a thick cuticle.
· Palisade layer
­ Closely packed together, elongated and contains lots of chloroplasts
for photosynthesis.
· Xylem
­ The vessel that carries water
· Phloem
­ The vessel that carries dissolved food substances
· Guard cell
­ Surround the stomata and cause it to open or close.
· Stomata (or stoma)
­ Holes underneath the leaf. Needed for gas exchange for
photosynthesis. HOWEBER water can evaporate from these holes.
This is called TRANSPIRATION.…read more

Slide 5

Preview of page 5

Leaf Adaptations
· Broad so large surface area
· Thin so short distance for gases to
· Contain chlorophyll to absorb light
· Have a network of veins for support and
· Stomata for gas exchange (by diffusion)…read more

Slide 6

Preview of page 6

· Osmosis is the movement of water
across a partially permeable membrane
from an area of high water
concentration (a dilute solution) to an
area of low water concentration (a
concentrated solution)
· Osmosis is a type of diffusion…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10




Thank you, this is great

Similar Biology resources:

See all Biology resources »