Lesson 15: Plant Structures Flashcards
Plants are
multicellular organisms
Two distinguishing features
they have more
complex systems than animals
Plants are divided into two main systems
Root Systems
shoot systems
The root system in a flowering plant typically grows
below ground
The roots of the plant have three main functions
-anchor the plant
-they absorb water and nutrients
-storage (they are very dense)
Roots have long been a useful source of
foods
-sweet potatoes
Shoot System
The shoot system in a flowering plant typically
grows above ground
The shoot system consists of the:
Leaf
Flower
Stem
The structures of the shoot system have two
main functions
site of photosynthesis
transportation
reproduction
The leaves of a plant are the main structure for
photosynthesis
The cell structure that performs photosynthesis is the
chloroplast
The chloroplast have thylakoid filled with
chlorophyll
Stacks of thylakoid are called
grana
Why do plants do cellular respiration?
to produce gluceus
Plant breathes using it’s
leaves
Flowers are specialized structures developed
for sexual reproduction
They contain male or female reproductive
structures, or sometimes
both
Male reproductive structures produce
pollen
grains
Female reproductive structures produce
eggs
The Stem
The flowering plant stem has several functions
The stem functions…
as structural support
The stem contain
vascular tissue (humans have arteries and veins)
(helps to transport water and nutrients)
Plants have two types of vascular tissues
Xylem
phloem
There are three main types of plant
tissue
Dermal Tissue (protection, prevent water loss)
Vascular Tissue (transport) (2 types)
Ground Tissue (storage, photosythesis)
waxy cuticle
Plants have a characteristic substance on their leaves
waxy cuticle helps to prevent water loss by having water proofing on the leaves
