1. Land Plants vs. Aquatic Plants

2. Veins that carry water/nutrients
Land Plants
Vascular
They have “veins” that transport nutrients between leaves, roots, stems
The veins are actually vascular tissue called xylem and phloem
Veins that carry water/nutrients

3. Xylem: carries water from roots to other parts of the plant
Phloem: carries sugar and nutrients from leaves to the rest of the plant
Why would sugar come from leaves?
Photosynthesis takes place mostly in leaves
(Photosynthesis uses sun and CO2 to make sugar and O2)

4. carbon dioxide
water
sugar
oxygen

5. Parts of a Plant
leaf
fruit
flower
seed
linktolearning.com
stem
roots

6. Leaves Main photosynthetic organ (why?) Collects the most sunlight
cuticle
upper epidermis
palisade cells
lignin
osovo.com
xylem
phloem
lower epidermis
spongy cells
guard cell
stoma

7. Flowers/Fruits/Seeds
reproductive organs
flower petals are modified leaves that attract pollinators
hold seeds
dispersed to help the plant grow in new places

8. Stem/Roots
the stem holds up and support the plant; it also has vascular bundles of xylem and phloem
roots anchor the plant in the ground and absorb water and nutrients from the ground
thestampbug.co.uk
homepage.smc.edu

9. What is the most important thing for a plant?
Where would be the best place in the ocean for plants and other photosynthetic organisms to be?
light
teachers.oregon.k12.wi.us
near the surface

10. Zones
Because light is so important to life, the ocean is separated in zones based on the amount of light that penetrates to that depth
photic means light
eu means good
dis means poor
a means no

11. Aquatic Plants
What do you think are some advantages and disadvantages to living in or near freshwater and saltwater?

12. Seagrasses evolved from land plants horizontal stems called rhizomes
very small flowers because…
they don’t need to attract pollinators
why not?
tathya.in

13. Salt Marsh
A salt marsh is an area that is partially flooded at high tide

14. Salt-Marsh Plants Cordgrasses (halophytes- salt tolerant plants)
actually in grass family unlike seagrasses
not marine; just tolerant of salt
help protect areas from erosion
provide habitat and breeding grounds
only get covered by salt water at high tides
salt glands in leaves excrete salt
coastal.er.usgs.gov

15. salt excreting from leaves
flickr.com

16. Mangroves trees and shrubs that live on shores
land plants tolerant of salt
create mangrove forests
xray-mag.com

17. thick leaves to reduce water loss; also excrete salt
seeds grow for a little while on parent then drop into the sediment below
travelpod.com

18. Pneumatophores
specialized root extensions to help mangroves get extra oxygen because the mud they grow in doesn’t have enough
pr.nrcs.usda.gov

19. mangrove roots beneath water provide shelter for many types of organisms