Plant cells, tissues, and organs Flashcards
Cell specilization?
when a generic ell produced by mitosis is developed into a cell with specific functions
(the RNA is half of DNA and when in a robosome it created different proteins that will determine the type of cell it becomes)
Meristem Cells?
unspecilized plant cell - can be anything
3 types of tissues in plants and thier functions
- Derman Tissue:
surrounds the plant organs
barrier betwwen plant and enviornment - Ground tissue:
preforms photosntheis
provides support for the plants body - Vascular tissue
xylem and phloem
transports water, nutrients, and sugar throughout the plant
4 plant organs
- roots
- stem
- leaf
- flower (reproductive organ)
Meristem in plants (3 places)
at the top (terminal bud)
in the roots
on the sides (lateral bud)
auxin
growth hormone in the buds
if u remove the terminal bud teh lateral bud activates and the plant grows wider instead of taller
Leafs job
have a large surface area where photosynthesis can occur because of the chloroplast
granum: inside the chloroplast
Parts of the leaf
Cutical: waxy surface that makes leaf waterproof
spongy cells: contains gas to help with photosynthesis
palisade cells: preforms most of photosynthesis
–> (both of which are apart of the mesophyl)
Xylem, Phloem (vascular tissue)
Upper & Lower Epidermis : single layer that covers leaf
Gaurd cell & stomata - allow gasses to move in and out of the leaf
- when the stomata opens carbon dioxide goes inside and oxygen and water goes out
Stem functions
transport nutrients, water, waste to places in the plant
provides physical support fot xylem and phloem
Xylem?
carries water and nurtients from the roots to the leaves for photosynthesis
Phloem?
takes the gluecose/sugars from the leaves down to the roots for storage
Roots functions
anchor of the plant to the ground
takes water and nutrients from soil
stores gluecose and starch for the next season
the flower function
used for the plants reproduction
stamen - male part
pistil - female part
Galls?
plant tumours