Waterways in vegetable kingdom

1
Waterways in vegetable kingdom

• I.E.S. de Foz Workshop 1

2
SEAWEEDS

• Aqua Project

3

• The estuary of Foz is a result of the mouths of
  the rivers Masma and Centiño, and divides the
  boroughs of Foz and Barreiros.
• It was an important whale port and shipyard.

4

• An estuary is the tidal mouth of a river, causing
  a coastal valley which is flooded by the sea, and
  consequently is subject to the effect of high and
  low tides.

5
(No Transcript)
6
(No Transcript)
7
Seaweeds are tallophyte plants, thats to say
they dont posses well differiantiated body.They
have a relatively undifferentiated mass of cells
called thallus...
8
...instead of having an organized plant body
(stem, root and leaf)
9
Even though thalli dont have organized ans
distint parts as do the vascular plants they have
analogous structures that resembre their vascular
equivalentsIn a kelp we can see
10
Holdfast Rhizoide (anchoir)
11
Stipe Cauloid (suppors the blades)
12
Blades Phylloids (photosynthesis)
13

• Some of the more common seaweeds in our shores .

14
Ulva lactuca
15
Codium tomentosus
16
Ecfocarpus silicolosus
17
Laminaria digitata
18
Laminaria saccharinna
19
Chorda filum
20
Himanthalia elonga
21
Fucus vesiculosus
22
Plant cells
23

• The movement of molecules, specifically water and
  any solutes, is vital to plants. Vascular plants
  need special tissues as xilema and floema to
  transport water and minerals.

In the picture we can see the xilema colored in
yellow.
24

• Here we can see the phloem colored in pink.

25

• Seaweeds have all their cells in contact with
  water, so that they dont need any transport
  system. They take all they need, straight from
  the sea.
• These molecules can enter by diffusion they go
  from an area of higher concentration to an area
  of lower concentration.

26

• Water pass trough osmosis, that means that it
  flows from a region of lower solute concentration
  to another of higher solute concentration,
  through a semipermeable membrane.

27

• We can say that water works as a water skeleton
  in cells.It helps to keep their size and shape

• This is specially important in seaweeds given
  that they dont have any tissues with that
  funtcion(vascular plants have colenquime and
  esclerenquime)

28

• USES
• They have a variety of purposes
• .

_Production of dental molds (alginates).
_Source of iodine ? necessary for thyroid
function.
_Food (specially in countries live Japan, China).
_Microbiology ? agar as culture medium.
_Extraction of alginate or agar (hydrocolloids
with comercial significance as food additives).
_In industrial products adhesive, textile
printing.
_May be used as fertilized.
29
2. HABITAT

• They most commonly inhabit the littoral zone and
  within that zone more frequently on rocky shores
  tan on sand.

The limiting factor is sunlight availability.

• The deepest living seaweeds are some species of
  red algae

The highest ones are green algae