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Plant Unit Mrs. Gerlach 2010-2011.

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Presentation on theme: "Plant Unit Mrs. Gerlach 2010-2011."— Presentation transcript:

1 Plant Unit Mrs. Gerlach

2 Classifying Plants Non-vascular: have no vessels, no roots, no stems, or leaves. Example: Mosses and Liverworts Vascular: have vessels to transport food and water. They have roots, stems, and leaves. Example: Grass, corn, trees, flowers, and bushes

3 Adaptations to land Waxy layer Deep roots Vascular tissue

4 Classifying Plants Continued
Vascular Tissue Xylem: transports water Phloem: transports food

5 Classifying Plants Continued
Two types of Plants Gymnosperms Angiosperms

6 Gymnosperms “naked seeds” Cone bearing plants (plants grow on cones)
Needle like leaves Usually stay green year round Wind pollinated Example: pine trees and evergreens

7 Angiosperms Flowering plants Seeds are enclosed in a fruit
Most pollinated by birds and bees Have finite growing seasons Examples: grasses, tulips, oaks, dandelions Broken down into two groups

8 Monocot vs. Dicot Monocots 1 seed leaf (cotyledon)
Parallel veins on leaves Leaves are narrow Flowers in multiples of three Fibrous roots Vascular bundles scattered through stem

9 Dicots 2 seed leaves (cotyledons) Branching veins Leaves broader
Flowers in multiples of 4 or 5 Tap root Vascular bundles arranged in a ring

10 Parts of a Plant: Roots Functions of Roots Root cap Root hairs
Absorbs water and minerals Anchors the plant In potatoes and carrots-stores food Root cap Protects the growing root tip Root hairs Absorption of water and nutrients

11 Parts of a Plant: Stems Functions of Stems Two types
Supports the plant Transports water through xylem Transports food through phloem (translocation) Two types Herbaceous woody

12 Parts of a Plant: Leaves
Functions of the Leaves Convert sunlight into food Photosynthesis Equation (CO2 + H2OC6H12O ) Transpiration: loss of water through the leaves

13 Leaves Continued Stomata: pores within the leaf that open to let CO2 in and O2 out Guard Cells: Regulate movement of gases and water through leaves Cuticle: waxy converting on leaf that prevents water loss

14 Parts of a Plant: Flower
Functions Reproductive organ of the plant

15 A Plant is Like Booklet Foldable Title Page For each of the four plant parts you will need three comparisons. One complete sentence describing the function in your own words. At least one illustration per page – drawn or cut from magazine.

16 Plant Reproduction Flower parts (on board) Sexual Reproduction
Pollen produced by stamen, transferred by wind or animals, lands in the ovary, ovary develops into a fruit, fruits are dispersed, seed will open when right conditions.

17 Asexual reproduction self-pollinations
Or, some plants send out runners or new pieces can form a new plant

18 Plant Growth Germination: when a seed sprouts
Only grow at the meristem (ends of stems and roots) Primary growth: taller Secondary growth: wider Tree Rings: each ring in one year of plant growth

19 Types of Growth patterns
Perennials: live several years reproduce many times Woody plants Annuals Completes life cycle in one year Grows, flowers, reproduces, and dies Biannuals Completes life cycle in two years

20 Minerals that aid in growth
Nitrogen Protein Phosphorus Energy Potassium Balance and stomata/guard cell opening

21 Environmental Influences
Tropism: response in which a plant grows towards or away from a stimulus Phototropism: light is stimulus Gravitropism: gravity is stimulus Thigmotropism: touch is stimulus


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