Build A Plant Lab Power Point For Pre-Lab What is the function of a root, stem and leaf in a plant? How are roots, stems and leaves adapted for the plant’s environment?
Roots: Function A. Anchor plant in soil B. Absorb water and minerals C. Store sugars or water Examples of storage roots include: Carrots, turnips and sweet potatoes.
Roots: Types of Roots • Taproot – the primary root becomes the largest root. • What is the advantage of having a tap root? • Fibrous Root – the primary root develops into numerous small roots and branches out. • What is the advantage of having a fibrous root?
Roots: Types of Roots Continued • Adventitious Roots - specialized roots that grow from stems and leaves. • What is the advantage of having adventitious roots? • Ex: prop roots of corn
Stem: Function A. Transportation – transport water and nutrients. • Xylem - transports water and nutrients from roots to leaves (upwards) • Phloem - conducts sugars from photosynthesis from leaves down through the plant B. Storage – store water and nutrients C. Support – leaves
Leaves: Function • Photosynthesis - leaves use light energy, carbon dioxide and water to make carbohydrates. B. Gas & Water Exchange - plants have stomata that open or close for gas and water exchange with the environment. Stomata
Leaves: Adaptations Simple Leaf Thick Cuticle Compound Leaf Pine Needles Thin Cuticle
Diversity of Plants How will you design your Plant? What role does the environment have on plant adaptations?
Ginger Willow bark Peppermint Aspen bark Cayenne pepper Cedar tree Aloe Dandelion Oregano Garlic Treatment for heart attack and stroke Soothes an uneasy stomach Treats acne, psoriasis and can be used as a diuretic. Also tasty in salads! Provides salicylic acid used to make aspirin Lowers cholesterol, reduces blood clots, improves the immune system and may prevent cancer Used by Native Americans to fight asthma and hepatitis Soothes blisters and sunburn Used to treat urinary tract infections, diarrhea and arthritis, and can be used as sun block. Great for motion sickness Treats cough and chest congestion