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Basic Parts of the Plant Roots Stems Leaves Flower.

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Presentation on theme: "Basic Parts of the Plant Roots Stems Leaves Flower."— Presentation transcript:


2 Basic Parts of the Plant Roots Stems Leaves Flower

3 Roots 1. Anchor Plant 2. Absorb water and minerals 3. Translocate water and minerals to stem 4. Store Food

4 Stems 1. Translocate water, minerals and food to the leaves 2. Support the leaves and display them to light 3. Store Food

5 Leaves 1. Make food through photosynthesis 2. Provide site of gas exchange 3. Store food

6 Flowers 1. Contain organs for specialized sexual production 2. Produce seeds and fruit

7 Different type of Roots A. Tap Root –Continuation of the primary root –Ideal for anchorage –Penetration is greater for water –Storage area for food made by photosynthesis

8 Different type of Roots B. Fibrous Roots –Many finely branched secondary roots –Shallow roots cover a large area More effective absorption of water and minerals Roots hold the soil to prevent erosion

9 Tap Root and Fibrous Root

10 Different type of Roots C. Aerial roots –Clinging air roots Short roots that grow horizontally from the stems Roots that fasten the plant to a support –Adventitious Roots Develop in places other than nodes Can form on cuttings and rhizomes

11 Specialized Stems A. Corm (gladiolus, crocus) – underground –Solid, fleshy, scale covered

12 Specialized Stems B. Bulb (tulips, lillies, onions) –Layers of fleshy scales that overlap each other –Underground stem

13 Specialized Stems C. Tuber (potato, caladium) –Food storage area –Short, thick underground stem

14 Specialized Stems D. Crown (African Violets, fern) –Closely grouped stems or plantlets –Just above ground or just below

15 Specialized Stems F. Rhizomes (iris, lily of the valley) –Underground stems that produce roots on the lower surface and extend leaves and flower shoots above the ground

16 Specialized Stems G. Stolon (Strawberry, airplane plant) –S–Stem that grows horizontally above the soil surface

17 Principal Tissues of the Leaf Epidermis –Cuticle Waxy substance covers the leaves and stems Waterproof layer that keeps water in plants

18 Principal Tissues of the Leaf Epidermis (cont) –Stomata Openings in the epidermis mainly located on underside of leaves Exchange of gases

19 Principal Tissues of the Leaf Epidermis (cont) –Guard Cells Two cells located on each side of stomata Open and closes stomata

20 Principal Tissues of the Leaf Mesophyll layer –Palisade mesophyll Primary site of photosynthesis –Spongy mesophyll Contains air and chloroplasts Site of photosynthesis and gas exchange

21 Principal Tissues of the Leaf Veins or vascular bundles –In spongy mesophyll –Phloem tissues conduct food from photosynthesis to rest of plant –Xylem tissues conduct water and minerals up to cells in leaves and stems

22 Parts of the Flower

23 Sepals –Outer covering of the flower bud –Protects the stamens and pistills when flower is in bud stage

24 Parts of the Flower Petals –Brightly colored –Protects stamen and pistills –Attracts pollinating insects

25 Parts of the Flower Stamens –Male Reproductive part –Anther-produces pollen –Filament-supports the anther

26 Parts of the Flower Pistil –Female reproductive part –Ovary Enlarged portion at base of pistill Produces ovules which develop into seeds –Stigma Holds the pollen grains

27 Parts of the Flower Style –Connects the stigma with ovary –Supports the stigma so that it can be pollinated

28 Complete and Incomplete Flowers Complete: have all four main parts –Sepals –Petals –Stamens –Pistils

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