Vascular plants have three main organs: roots, stems, and leaves. Roots function to anchor the plant and absorb water and minerals, stems support leaves and reproductive structures, and leaves are the primary photosynthetic organ. These organs work together through vascular tissue to transport water, minerals, and food between roots, stems, and leaves. Roots absorb water and minerals which are carried by xylem to leaves, while leaves produce food through photosynthesis which is carried by phloem to the rest of the plant.

1. CHAPTER
III:

2. TOPI
C:
An Overview of
Vascular Plant Organs
BY :
Patricia Clariza Santos MLS-1D (

3. Organ consist of several types of tissues adapted as
a group to perform a particular functions.
Vascular plants have three organs:
ROOTS STEMS LEAVES

4. Bryophytes and some
seedless vascular
plants have structures
that can be called:
-“stemlike”
-“leaflike”
-“rootlike”
But not considered to
be true stems, leaves
and roots.

5. The list of plants is much shorter than the list of
animal organs. While some botanists refer to
reproductive structures such as :
- SEEDS
- CONES
- FLOWER as (organs)
Most reserve the term solely for stems, leaves
and roots.

7. Photosynthesis – is the process by which plants
certain other organisms use solar energy to
make their own food by transforming carbon
dioxide and water into sugars that store
chemical energy.
Stem is any part of a plant
that supports leaves or
reproductive structures.

9. BRANCHES

11. Leaf or a leaves – is the
main photosynthetic organ
of modern plants.
Cacti – most
photosynthetic plant that
occurs in the thick stems,
which stores water.

13. Some pressure is a “push” from the roots,
but a “pull” from the leaves that is the
main force that moves water in most
plant. This “pull” come from the loss of
water through the pores in leaves.

14. Transpiration – the
evaporation of
water from the
plants, pulls water
and mineral
nutrients up from
the roots to the
leaves.
- The chemistry of
water helps
explain how
transpiration
moves large
amounts of water
through the plants.

16. Roots have two main
function :
- Anchoring the plant
in the soil
-Absorbing water and
minerals
The absorption takes
place only near the
very tips of the roots,
through trichomes.

17. Root Hairs
Which means the tiny extensions of root
epidermal cells that greatly increase the
amount of root surface area.
- In addition to anchorage and absorption,
many roots store food for the plant.

18. Even though roots frequently store food,
they do not actually produce it. Because
they are usually NON-PHOTOSYNTHETIC
and in fact usually grow away from the
light.

19. Vascular tissue system
continues between :
Roots
Stem
Leaves
Needs sugar
and other
organic
nutrients
produced in
leaves.
While leaves and
stem needs water
and minerals
obtained by the
roots.
Xylem carries water and
minerals from the roots.
Phloem carries
food from the
leaves to the rest
of the plant.