Copy Words (not diagram) in Journal and answer question Provide evidence for your answer Extra CO2 in blood causes pH to decrease (more acidic). Extra CO2 can be caused by mitochondria making more ATP like when you are exercising. Breathing more lets you remove excess CO2 and then lower your blood pH. Positive or Negative Feedback?

Today’s Agenda Silent Reflection 3rd Only – Finish Lab Station Plant Notes

Intro Questions Where in the plant does the most photosynthesis occur? How does the water get to where the photosynthesis occurs? How does the CO2 get in? What happens to the sugar that gets created? Where does the oxygen created go? Could do a venn diagram for systems. Circulatory Skeletal System Respiratory Reproductive Integumentary Immune System

Plant Body Shoot system Organs: Leaves, Stem, Reproductive Structure (Flower) Above ground (usually) Many functions including: photosynthesis reproduction & dispersal transport

Plant Body Root system Organ: Root Underground (usually) Anchor the plant in the soil Absorb water and nutrients Conduct water and nutrients Food Storage

Three Types of Plant Tissues Vascular Tissue Transport Support Ground Tissue Synthesis of Sugars Storage Dermal Tissue Protection

Vascular Tissue Xylem Phloem Transports water and dissolved nutrients UP the plant Nitrogen, Phosphorus, Potassium, Calcium, Sulfur, Boron, Magnesium, Chlorine, Manganese, Iron, Zinc, Copper, Molybdenum, Nickel Why? Phloem Transports sugars down the plant Why?

Dermal Tissue Transpiration – Plant Water Loss Through Evaporation Outer covering Single layer of cells Cuticle – waxy coating Trichomes – protective hairs Root Hairs Guard Cells Transpiration – Plant Water Loss Through Evaporation

Stoma = opening in the leaf for gas exchange, water evaporation Conserves water Photosynthesis Transports water and sugar to stem and roots Stoma = opening in the leaf for gas exchange, water evaporation Structures of the Leaf

Flowering Video http://studyjams. scholastic

Closing The flower is equivalent to what in animals? Why? The xylem and phloem are equivalent to what in plants? Why? The dermal tissue is equivalent to what in animals? Why?

Flowering Plant Reproduction Pollen grains Ovule Flower Meiosis Mitosis Flowers are modified leaves, specialized for reproduction. Flower parts undergo meiosis to produce haploid products pollen grain ovule (contains egg cell)

A Complete Flower Has Both Male and Female Parts Produces pollen Stamen Anther Attracts pollinator Filament Pistil Stigma Petal Style Sepal Ovary Encloses and Protects Bud Female part Produces egg

Pollination and Fertilization in a Flower Mature Pollen Grain Sperm Cells Tube Cell Nucleus 1. pollen grains land on stigma 2. pollen tubes grow down stigma to ovary 3B: Fusion of 2nd sperm + two polar nuclei Stigma 3. double fertilization Style Sperm 3A: Fusion of sperm + egg Pollination and Fertilization in a Flower Ovule Polar nuclei Ovary Egg

Applying Your Knowledge Seed Fruit Pistil Anther Pollen Which one develops from the ovary wall? Which one produces pollen? Which one develops from a fertilized ovule? What is the name of the female part of the flower?