1. Introduction: Plants are eukaryotes, multicellular organisms. Most of de eneregy
consumed i terrestrial ecosystems is provided by plants
Plant classification
Novascular plants:
They don't have special tubes to
carry water and nutrients
Molses
Antocers
Hepatiques
Seedles vascular plants:
Have roots, stem and
leaves but don't make
seeds
Tems
Vascular plants:
They have roots, stems,
leaves and those special
tubes for water and
nutrients too
Gymnosperms:
These plants are
special because
they have neked
seeds
Angiosperms:
Seeds inside fruits
or flowers
Parts of plants
Leaves:
These are like the plant's solar
panels
Stems:
Think of the
plant's anchor
Roots:
Roots are like the
plant's anchor
Flowers:
Are like the plant's way of
showing off
Fruits:
Fruits are
nature's sancks
Plant reproduction
Asexual
reproduction:
Mosses make tiny called spores. //
Ferns also make spores. //
Vascular plants: Can reproduce
by a form of asexual
reproduction by a form of
asexual reproduction know as
vegetatuve reproduction
Sexual reproduction:
Mosses the gametes come from two differents parts
of the plants. // Ferns the gametes are also made by
different part of the plant. // Gymnosperms like pine
trees, hace male and famale cone. // Angiosperms or
flowering plants have as reproductive organs
Plant iteractions
Tropisms:
Are the growth
responses of plants
due to external
stimuli
Nastic
movements:
Are temporary
movements in one
part of a plant
Plant nutrition
1. Meaning they make their own food
substances from inorganic substances.
2. Water and minerals enter the plant
through tiny roots hairs.
3. Carbon dioxide enters the plant the stomata.
4. Once in the cells, water and carbon dioxide enter
chloroplasts.
5. The organic matter produced durning photosynthesis
become sap and is distributed to the rest of the plant for
nourishment.
6. The oxygen produced will be partly used by the
plant in repiration.
7. Plants, like all living beings , need energy for their
vital functions.