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BIOLOGY
PARTS OF PLANTS
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ESSENTIAL AND UNDERGROUND PART OF PLANTS
ROOTS
PART THAT IS
FOUND ABOVE THE GROUND.
BARK OF TREES ARE BROWN, AND
YOUNGER STEMS ARE GREEN.
NODE IS WHERE THE LEAVES ARISE
STEM
CONTAINS CHLOROPHYLL
THAT
HELP THE PLANTS PREPARE FOOD FROM SUNLIGHT.
3 PARTS:
PETIOLE, LEAF BEASE, LAMINA
LEAVES
3 PARTS OF LEAVES
PETIOLE
, LEAF BASE,
LAMINA
REPRODUCTIVE PART OF PLANT
FLOWERS
ovary that developes after fertilization.
PARTHENOCARPY are those ovaries that developes without fertilization.
FRUITS
colorful part.
Attracts insects and birds
PETALS
leafy parts present under that flower. Protect flower bud from damage
sepals
o male part. Consist of anther and filament
STAMENS
o female part. Consist of stigma, style, ovary.
PISTIL
o green leaves prepare the foods. They use water and carbon dioxide with sunlight.
PHOTOSYNTHESIS
o removal of excess water from plants through tiny pores called
STOMATA
TRANSPIRATION
leaves help with the reproduction
REPRODUCITON
o Converts kinetic energy in light to potential energy in the bonds of carbohydrates
§ 6CO^2 + 6H2O light energy C6H12O6 + 6O2
PHOTOSYNTHESIS
o Sunlight consists of
ultraviolet radiation, visible light, infrared radiation.
They are all a small part of
electromagnetic radiation
ELECTROMAGNETIC SPECTRUM
o Moves in waves
o The
shorter the wavelength, more kinetic energy
PHOTONS
o Contain several pigment that capture light energy
o Most abundant is CHLOROPHYLL A. it is a green photosynthetic pigment
PHOTOSYNTHETIC PIGMENTS
§
Energy-capturing pigment molecules
§ Absorb wavelength of light that
chlorophyll
a
cannot
absorb
ACCESSORY PIGMENT
§ Chlorophyll
b
§ Carotenoids
ACCESSORY
PIGMENT IN
PLANTS
PLANTS EXCHANGE GASES THROUGH STOMATA
SITES
OF
PHOTOSYNTHESIS
CONTAINS
ABUNDANT AMOUNT OF CHLOROPLASTS
MESOPHYLL
* Contains a gelatinous fluid called STROMA
* STROMA surrounds GRANA
* Enclosed by THYLAKOID SPACE
CHLOROPLASTS
* OCNSIST OF PROTEINS
* ANTENNA PIGMENTS
* REACTION CENTER
PHOTOSYSTEM
2 STAGES OF PHOTOSYNTHESIS
LIGHT
REACTION,
CARBON
REACTION