Presentation is loading. Please wait.

Presentation is loading. Please wait.

Multi-cellular Eukaryotes Cell Wall Chlorophyll for photosynthesis.

Similar presentations

Presentation on theme: "Multi-cellular Eukaryotes Cell Wall Chlorophyll for photosynthesis."— Presentation transcript:


2 Multi-cellular Eukaryotes Cell Wall Chlorophyll for photosynthesis


4 Mosses Ferns Gymnosperms Cone bearing Angiosperms Flowering plants

5 Become less dependent on water More resistant to sun rays More capable of conserving water More capable of reproducing without water

6 Life cycle depends on water for reproduction NO SEEDS Hornworts, liverworts & mosses

7 SEEDLESS VASCULAR PLANTS Ferns, horsetails, club mosses

8 Vascular SEEDS (In CONES) Conifers, Douglas firs

9 Vascular Bear Seeds (within Flowe

10 All Vascular Consist of: Roots Stems Leaves

11 Dermal Vascular Xylem – tracheids & vessels elements Phloem – sieve tube elements & companion cells Ground

12 Tap Root (ex: carrot) Roots grow from the cells at the tip which are continuously dividing through mitosis. Fibrous Root (ex: grass)

13 Support of Leaves, Fruits & Flowers Place the leaves in the light Provide a place for the plant to keep its flowers and fruits. Transport of fluids between the roots and the shoots in the xylem and phloem.

14 Site of photosynthesis Chloroplast is the organelle that houses the green pigment chlorophyll Place of Transpiration and Respiration Consists of 2 parts: Blade Petiole

15 basic energy source of cells


17 Transpiration – loss of water through leaves Guard Cells – Change the size of the stomata to control amount of water released. This takes place in STOMATA which is a pore-like opening

18 Take place in CONES Pollen Cones – MALE (produce male gametophyte) Seed Cones – FEMALE (produce female gametophyte)

19 Pollination happens when the pollen is RELEASED from male Fertilization happens when the pollen grains land near ovule


21 MonocotsDicots SeedsSingle CotyledonTwo Cotyledon LeavesParallel VeinsBranched Veins FlowerMultiples of 3Multiples of 4 or 5 StemsVascular – bundled/scattered Vascular – Bundled on ring RootsFibrousTap Root


23 Pollination happens when POLLEN lands on STIGMA Fertilization happens when 1 pollen grain divides to make TWO (2) sperm nuclei 1 sperm nuclei = fertilizes the EGG 2 nd sperm nuclei = fertilizes with the 2 polar nuclei to make TRIPLOID ENDOSPERM

24 Fruit – any seed that is enclosed within its embryo wall

25 Hormones – control of plants pattern of growth & development & plant response Auxins (3) – stimulate cell elongation Cytokinins (2) – stimulate cell development & growth of lateral buds, cause dormant seeds to sprout Gibberillins (1) –dramatic increase in size, part in stem & fruit Ethylene (1) – stimulate to ripen

26 Gravitropism – response to gravity Phototropism – response to light Thigmotropism – response to touch Photoperiodism – response to light & darkness Winter dormancy – photosynthetic pathway turned off Leaf abscission – losing leaves during colder months

27 Early growth stage of plant embryo Steps: 1. Absorbs water 2. Seeds open from swollen tissue 3. Young root emerges & grows

28 Vegetative Reproduction Includes production of new plants from horizontal stems, from planters & underground roots Benefits: doesn’t involve pollination 2 methods: horizontal stems, planters & underground roots

29 Plant Propagation – horticulturist use cutting, grafting or budding to make identical copies of a plant BENEFITS - produce offspring from seedless plants 3 FORMS – Cutting – cut from plant, place in special soil Grafting – stem out from parent, placed on plant that has stable root for a strong root system Budding – buds used to place on stock


31 3 ways plants adapt to life in water 1. Seeds that float 2. Grow quick 3. Shoots grow above water

32 Submerged in Water: No Cuticles to Prevent Water Loss Reduced Roots Chloroplasts are restricted to the upper portions Salty Conditions: Specialized cells that pump salt out Desert Plants: Extensive roots Reduced leaves Thick stems Poor Soil: Carnivores Parasites

33 Growth on other plants Shade Tolerance and a way of extracting nutrients Fight Insects Defend themselves against insects attack by manufacturing compounds that have powerful effects on animals

Download ppt "Multi-cellular Eukaryotes Cell Wall Chlorophyll for photosynthesis."

Similar presentations

Ads by Google