Roots: Anchors plant by keeping it firmly in place. Absorbs water and minerals.

Stem: Holds up the plant. Transports water , minerals, and nutrients to rest the plant.

Flower: Where pollination and reproduction takes place.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis

Leaf: Where photosynthesis (food making) takes place.

Parts of a Plant

PollinationPollination Plant Responses

Plant Responses

ROOTS

Root hairs: absorbs water and minerals

Root cap: pushes the root through the soil.

Grass is a fibrous root.

Carrots are taproots where starch is stored.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

Xylem Cells: connecting tubes that carry water and minerals from the soil.

StemPhloem Cells: tubes that carry nutrients from the leaves through the stem and down to the root.

The stem is like the highway system of the plant, transporting minerals, nutrients, and water throughout the plant.

Woody plants, like roses and trees, live for many years.

Nonwoody plants, like dandelions, live for only one season.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

Leaf

Veins: the transport system of the leaf.

Petiole: an extension of the xylem and phloem tubes from the stem.

Blade: the broad, flat part of the leaf.

Inside of a Leaf

Upper Epidermis: protects the leaf from drying off.

Lower Epidermis: protects the leaf and allows for the exchange of gases.

Cells: where chloroplasts exist and food making occurs

Chloroplasts: contains the chlorophyll, which gives the leaf color.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

FlowerPetals: the colorful part of the flower.

Stamen: Male part that holds the pollen.

Pistil: the female part of the flower .

Stigma: sticky part on the top of the pistil to which pollen grains stick

Ovule: Produces the female sex cells and becomes the seed.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

Carbon dioxide

water

Carbon dioxide

sunlight

oxygen

oxygen

Sugar=energy

Sugar=energy

Photosynthesis:

sunlight+ carbon dioxide+ water= sugar and oxygen

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

Pollination

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses

Colorful petals attract insects and other animals to the nectar. Pollen rubs off of stamen onto insect or animal.

Insect or animal rubs pollen onto stigma.

Pollen travels down pistil and becomes fertilized in the ovary.

Ovary enlarges and becomes a fruit.

The fruit splits open and releases the seeds.

Plant Responses

Thigmotropism: plants response to touch, like the tendrils of a pea plant.

Hydrotropism: plants response to the need for water.

Phototropism: plants response to the need for sunlight.

Geotropism: plants response to gravity by growing toward the center of the earth.

RootsRoots StemStem LeafLeaf FlowerFlower PhotosynthesisPhotosynthesis PollinationPollination Plant Responses

Plant Responses