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Plant Kingdom (General Characteristics (They have eukaryotic plant cells…
Plant Kingdom
General Characteristics
They have eukaryotic plant cells
Chloroplast
Large vacuoles
Cell wall
They can't move around
They are multicllular
They are autotrophs
Nutrition
Cellular respiration ( to produce energy)
It happens inside mithocondria
It needs oxigen (O2) and produce ( CO2)
Organic compounds + oxigen produce energy
Vascular system
Xylem
transport raw sap ( water+ mineral salts)
form the roots to the leaves
Phloem
transport elaborated sap ( nutrients formed through photosynthesis)
from the leaves to the rest of the plant
PHOTOSYNTESIS
(they produce their own food)
They take carbon dioxide ( CO2) and produceoxygaen (O2)
Chloroplast contain chlorophill, that captures sunlight
It happens in leaves and green stems
They take inorganic compounds and produce organic compounds
Type of plants
Non-flowering and seeddless plants
Mosses
they are
non- vascular plants
( they don´t have xylem and pholem)
They don't have true roots stems or leaves
Ferns
They have true roots , stems ( called RHIZOMES )
They produce from Spores
They are
vascular plants
( they have xylem and phoem )
Flowering Plants with seeds
Two types
Gimnosperms
The most important group :
Conifers
Seeds protected by
cones
Examples : pines , cypresses
their seeds are not protected by a fruit
Angiosperms
They have colorful and complex fower
Seeds protected by a fruit
SEXUAL REPRODUCTION
1.POLLINATION: pollen grains travel from the flower of one plant to another by the wind or carried by insects
2 FERTILISATION
when a pollen grain reaches the stigma , it creates a long pollen tube that reaches the ovary , where it fertilizes an ovule
3.SEED FORMATION: Te fertilized ovule(The zygote) becomes a seed
FRUIT FORMATION: the ovary becomes a fruit, that protects the seeds
General characteristics
They are vascular plants
They have a reproductive organ : the flower
They have roots, stems, and leaves
