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Plants Characteristics

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Presentation on theme: "Plants Characteristics"— Presentation transcript:

1 Plants Characteristics
There are two main types of plants, non-vascular and vascular Eukaryote Cell Type Domain Eukarya and Plantae Kingdom Multi-cellular and have Cell Wall Autotrophs-Make their own food Photosynthesis 6CO2+6H2O+sunlight ->C6H12O6 +6O2

2 Non vascular plants Do not have vascular tissue to carry the nutrients and water throughout the plant They must live in water or moist surroundings They are usually small and grow close to the ground No Roots Ex. Mosses, hornworts and liverworts are examples of nonvascular plants

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Nonvascular Plants Includes mosses (Bryophyta), liverworts (Hepatophyta), and hornworts (Antherophyta) Liverworts Hornworts copyright cmassengale

4 Vascular plants Vascular tissue is small tubes inside the plant that transport food and water through the plant two types of vascular tissue: phloem and xylem Xylem moves water Phloem moves nutrients (aka Food) produced by photosynthesis down from the leaves to the rest of the plant

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6 Seed-Producing Vascular Plants
Includes two groups – Gymnosperms and Angiosperms Gymnosperms have naked seeds in cones Angiosperms have flowers that produce seeds copyright cmassengale

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Gymnosperms The oldest living plant – Bristle cone pine The tallest living plant – Sequoia or redwood Cycad Ginkgo copyright cmassengale

8 Examples of vascular plants: sequoia tree (Sequoiadendron giganteum)

9 Gymnosperms (Naked Seed)
Plants that do not have flowers are called Gymnosperms Conifers, ginkgos and cycads are examples of Gymnosperms

10 Plants that have flowers are called Angiosperms

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Angiosperms Flowering plants Seeds are formed when an egg or ovule is fertilized by pollen in the ovary Ovary is within a flower Flower contains the male (stamen) and/or female (ovaries) parts of the plant Fruits are frequently produced from these ripened ovaries (help disperse seeds) copyright cmassengale

12 Flowers have male and female parts
The male part is called the stamen The stamen is made of the anther and the filament The anther produces pollen

13 Fertilization and Importance
Pollen is sometimes spread by birds, bats, insects or wind All living things on Earth are dependent on plants for their existence. We depend on them for food and for oxygen

14 Subdivided into two groups –
Angiosperms Subdivided into two groups – Monocots and Dicots Monocots have a single seed cotyledon Dicots have two seed cotyledons Parts of the Seed copyright cmassengale

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Monocots and Dicots copyright cmassengale

16 Tropism = a plant’s growth response toward or away from a stimulus.
Plant Adaptations Tropism = a plant’s growth response toward or away from a stimulus. * Positive tropism is when it grows toward a stimulus. * Negative is when it grows away from it. * Stimuli can be light, touch, and even gravity. - Touch (thigmotropism) [vines coil around anything they touch.] - Light (phototropism) [leaves, stems, etc, grow toward light.] - Gravity (geotropism) (Positive) roots grow toward gravity’s pull (Negative) stems grow away from its pull

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Thigmotropism Geotropism Phototropism copyright cmassengale

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19 LAB ACTIVITY: Celery Lab
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20 Review Plant Parts Online Activity
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21 Bee

22 Hummingbird

23 All living things on Earth are dependent on plants for their existence.
We depend on them for food and for oxygen

24 Plants

25 All plants are multicellular
All plants are eukaryotes All plants have a cell wall

26 All plants are autotrophs
They produce energy through the process called photosynthesis The formula for photosynthesis is:

27 Plant Characteristics
Multicellular eukaryotes Autotrophic (photosynthesis) Surrounded by cell walls containing cellulose (polysaccharide) Store reserve food as amylose (starch) copyright cmassengale

28 Parts of The Plant Roots Leaves Stem Flower Seed

29 Plants have three main organs

30 Leaves The leaves function is to capture sunlight and perform photosynthesis

31 Stems The stems function is to support the plant and provide a place through which water and nutrients move

32 Roots The roots anchor the plant to the soil and absorb water and nutrients from the soil

33 Root Functions Absorption of water and nutrients
Roots have 4 primary functions Absorption of water and nutrients performed by root hairs Transportation of water and nutrients to stem Anchor plant to maintain stability Store food and water

34 Important Functions of Leaves
Photosynthesis Process that plants use to produce their food 6CO2 + 6H2O C6H12O6 + 6O2 Transpiration Loss of water and exchange of carbon dioxide

35 Functions of the Stem Transport water and nutrients from roots to leaves Supports leaves, fruit, and flowers Food storage

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Plant Divisions copyright cmassengale

37 Nonvascular Plants Do not have vascular tissue for support or conduction of materials Require a constantly moist environment Sporophyte stage Gametophyte Stage Moss Gametophytes & Sporophytes copyright cmassengale

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Nonvascular Plants Plants can’t grow as tall Cells must be in direct contact with moisture Materials move by diffusion cell-to-cell Sperm must swim to egg through water droplets copyright cmassengale

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Plant Divisions Plants are divided into two groups Based on the presence or absence of an internal transport system for water and dissolved materials Called Vascular System Vascular Bundles copyright cmassengale

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Vascular System Xylem tissue carries water and minerals upward from the roots Phloem tissue carries sugars made by photosynthesis from the leaves to where they will be stored or used copyright cmassengale

41 Examples of vascular plants Coconut palm (Cocos nucifera)

42 Conifers Giant sequoia Gingko

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45 The female part is called the pistil
It is made of the stigma, style and the ovary Inside the ovary are ovules which when fertilized, will mature into seeds


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Plant Uses copyright cmassengale

48 Why We Can’t do Without Plants!
Produce oxygen for the atmosphere Produce lumber for building Provide homes and food for many organisms Prevent erosion Used for food copyright cmassengale

49 More Reasons We Can’t do Without Plants!
Produce wood pulp for paper products Source of many medicines Ornamental and shade for yards Fibers such as cotton for fabric Dyes copyright cmassengale

50 Plant Adaptations to Land
Solutions: Roots absorb H2O & minerals Lignin & cellulose in cell walls Vascular Transport System Waxy cuticle & stomata with guard cells Pollen containing sperm Problems: Need minerals Gravity Increase in Height for Light Adaptations for Drier environment Reproduction copyright cmassengale

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EXIT TICKET copyright cmassengale

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