PLANTS

Characteristics of Plants Multi-cellular Non-mobile Cell walls are composed of cellulose Contain chloroplast with chlorophyll Photosynthetic Autotroph

Do you see what I see? Write down as many parts of the plant cell can you label?

Chloroplast

Vacuole

Cell Membrane

Cell Wall

Nucleus

Look at this picture. Can you label the parts of the plant?

absorbs water and nutrients from the soil anchors plants in the ground prevents erosion

Fibrous roots – prevent erosion Taproots – reach water deep in the ground

Roots: Monocot vs. Dicot

helps to support the plant produce leaves transports substances throughout the plant

Phloem Xylem transport the sugars and other molecules created by the plant. Phloem is always alive. the system of tubes and transport cells that circulates water Xylem dies each year – producing tree rings

Stems: Monocot vs. Dicot

How old is this tree?

The leaves use sunlight to provide the plant with energy through photosynthesis.

Leaves come in different shapes and sizes

Cross-section of a Leaf

Releasing O 2 + H 2 O Transpiration

Leaves: Monocot vs. Dicot Monocot – parallel veins Dicot – branched veins

Turn to your neighbor and tell them 3 things you have learned about leaves.

The flower helps the plant to reproduce.

This is the name for the FEMALE part of the flower. This is the name for the MALE part of the flower.

( aka Pistol female part )

( male part )

Flower: Monocot vs. Dicot Monocots – multiples of 3 Dicots – multiples of 4 or 5

With a partner, draw and label a flower. One person labels male parts and the other person labels the female.

Pollination Flowering plants use the wind, insects, bats, birds and mammals to transfer pollen from the male (stamen) part of the flower to the female (stigma) part of the flower.

Fertilization Pollen grains germinate on the stigma, growing down the style to reach an ovule. Fertilized ovules develop into seeds. The carpel enlarges to form the flesh of the fruit and to protect the ovary.

Fruit or Veggies? With a partner, classify the following: CucumbersPotato TomatoesStrawberry CarrotsRadish OrangeSquash PumpkinGreen peppers

Seeds: Monocot vs. Dicot

“Plant behavior”

Hormones Auxin – causes cell growth towards the sun Cytokinins – cause plants to branch and seeds to sprout Gibberellins – cause plants to increase in size Ethylene – causes fruits to ripen

Tropisms Gravitropism – roots grow down, stems grow up Phototropism – growth towards light Thigmotropism – response to touch

Others… Photoperiodism – plants response to periods of light (day and night) Winter Dormancy – plants get ready for the winter (stop photosynthesis)

Plant Adaptations… In spite of being rooted in the ground, plants need to have strategies that allow them the necessary “skills” to survive.

TRUE or FALSE After each statement, move to the right side on the room for true or the left side for false. Ready…

Quick Quiz You have 3-5 minutes to review all of your notes.