Presentation is loading. Please wait.

Presentation is loading. Please wait.

KINGDOM PLANTAE Why are they relevant? Photosynthesis provides Oxygen Plants are the basis of all food chains Clothing, medicine, textiles, etc. Interlocking.

Similar presentations


Presentation on theme: "KINGDOM PLANTAE Why are they relevant? Photosynthesis provides Oxygen Plants are the basis of all food chains Clothing, medicine, textiles, etc. Interlocking."— Presentation transcript:

1

2 KINGDOM PLANTAE

3 Why are they relevant? Photosynthesis provides Oxygen Plants are the basis of all food chains Clothing, medicine, textiles, etc. Interlocking roots prevent erosion

4 Where did they come from? Fossil record is sketchy (no hard parts to fossilize) Most scientists believe they came from green algae (protists) and moved to land to get closer to the sun…

5 Plant Characteristics All are Multicellular Eukaryotes All contain chloroplasts Most are non-motile

6 Groups of plants: Seedless Bryophytes: Mosses, liverworts and hornworts. –One cell thick, very primitive, must remain wet. –No veins to carry food and water, they use osmosis instead –Need water for sperm to swim to egg in reproduction (no seeds)

7 Groups of Seedless Plants Continued… Ferns –Leaf is called a frond –Still no seeds, sperm swim to egg –Have vascular tissue, so they can grow taller Types of vascular tissue: –Xylem carries water up from roots –Phloem carries sugar down from leaves

8 Groups of plants continued… SEED plants Vascular SEED Plants: –Gymnosperms: “naked seed” evergreens like pine and spruce. Seed does not have any protection and develops on a cone. –Angiosperms: “seed in a vessel” or a fruit. Flowering plants that use fruits to protect the seeds

9 Angiosperms Annual v. Perennial Anything that has seeds is a FRUIT!! –Peppers? YES! –Pumpkins?YES! –Tomatoes?YES! –Corn?YES!

10 Two divisions of angiosperms: Monocots: have ONE seed leaf (Cotyledon) and leaves have PARALLEL veins. –Example: grass or palm trees Dicots: have TWO seed leaves and leaves have branched veins. –Example: oak tree (deciduous) or rose

11 Plant Organs: Roots, stems, leaves and flowers Roots: Collect water –Tap roots or fibrous –Root hairs increase surface area and absorption of roots

12 Plant Organs Stems: Transport food down the stem in the phloem and water up the stem from the roots to the leaves in the xylem.

13 Plant Organs Leaves: Covered with waxy cuticle, filled with chloroplasts, get held broad to the sun so they can easily photosynthesize, have veins of xylem and phloem. –Contain stomata (a pore) surrounded by 2 guard cells which let CO 2 in depending on whether or not the plant has enough water (turgidity) Wilted = closedfull = turgid and open

14 Section 23.2 Summary – pages Leaf structure Stomata Guard cell Spongy mesophyll Lower epidermis Cuticle Upper epidermis Vascular bundle Xylem Phloem

15 Leaves

16 Stoma

17 Plant Organs Flowers: The reproductive organs –Male = stamen which is made up of the anther and the filament –Female = pistil which is made up of the stigma, style and ovary

18 Flower Anatomy Male Female

19 Vocabulary Time: Pollination = transfer of pollen from flower to flower

20 Vocabulary Time: Fertilization = the actual meeting of egg and sperm (from pollen)

21 Vocabulary Time: Germination = a seed growing into a plant

22 How are flowers pollinated? Insects Birds Wind

23 Once fertilized, how are seeds dispersed to where the new young plant will grow? Wind Water Animals

24 Photosynthesis 6CO H 2 0  C 6 H 12 O 6 + 6O 2 + 6H 2 O –Reactants = carbon dioxide, water and sunlight –Products = glucose (food for the plant), oxygen (for us!) and water

25 Photosynthesis

26 Modifications Plants like cactus adapted leaves to avoid dessication. Plants that do not get enough nutrients from photosynthesis have adapted: –Venus fly trap and pitcher plant

27 Plant behavior Phototropism: movement TOWARD light. Leaves have a + phototropism, roots have a – phototropism Gravitropism: movement toward gravity.

28 Phototropism

29 Question 1 Most plants produce their own food in the form of _______. D. chlorophyll C. glucose B. proteins A. cellulose The answer is C.

30 Question 2 Why are most plant roots not covered in a cuticle? Answer The waxy cuticle would prevent the plant’s roots from absorbing water and nutrients.

31 Question 3 Which of the following is NOT a function of most plant roots? D. anchoring the plant C. store starch B. conducting photosynthesis A. absorbing water and nutrients The answer is B.


Download ppt "KINGDOM PLANTAE Why are they relevant? Photosynthesis provides Oxygen Plants are the basis of all food chains Clothing, medicine, textiles, etc. Interlocking."

Similar presentations


Ads by Google