WEBSITE IS UNDER REMODELING
Plant Transport
Plant Characteristics
- Multicellular
- Eukaryotic
- cells with cell walls made of cellulose
- Conducts photosynthesis in chloroplasts
- Stationary
- Producers
Plant Cell vs Animal
- Cell Walls – structure
- Ribosomes – make proteins
- Vacole – water and other storage
- Chloroplast – Photosynthesis
- Mitochondria – Cellular Respiration
Functions of Roots
- Anchor and support plant in the ground
- Absorb water and minerals
- Hold soil in place
Root Structure
- Root hairs increase surface area
- Meristem: where new cells are produced
- Root Cap: Protects the toots (thick layer of cells)
Stems
- Supports the plant body
- transports water and nutrients using the transport system
- Holds leaves & branches upright
Leaves
- Photosynthesis
- Collects gases
- Regulates the release of gases
- Have systems to prevent water loss
VASCULAR TISSUE
- Phloem Tissue carries glucose from the leaf to the rest of the plant through the stem
- Xylem Tissue dead elongated cells: H2O and minerals from the soil come to the leave
Parts of the leaf
- Mesophyll: Site of photosynthesis
- Stomata: lets carbon in and oxygen out
- Guard cells: Close and open stomata openings
Plant Response
- Plant cells produce hormones which are chemical messengers that travel throughout the plant causing other cells to respond (Target Cells)
- Different Signals: Drop leaves, new growth, fruit to ripen, flowers to bloom, and seeds to sprout
- Fruit Tissues release a small amount of ethylene which then causes fruits to ripen
- Plants will respond to light by growing towards it by producing Auxin in the shadier side of the plant causing the plant to build.
Tropism
- When external factors trigger internal stimuli
- Phototropism, growth to the light
- Geotropism, growth against gravity
- Thigmatropism, Growth in response to touch, Like vines growing up around trees.