BSCI 135 Exam 2: Verified Questions & Answers for Plant Power| 2025/26 UPDATES.

BSCI 135 Exam 2: Verified Questions & Answers for Plant Power| 2025/26 UPDATES. About This Resource: This BSCI 135 Exam 2 Study Guide includes verified practice questions and concise explanations on key topics such as medicinal plants, economically important crops, spices, beverages, and plant-derived materials. Whether you're reviewing for class or testing your knowledge, this guide is built to help you understand plant science and pass with confidence. 1. Retting - -rotting for 1-2 weeks on the ground, or days in water, removes soft tissue of the flax stem, leaves the vascular bundles (fibers) 2. Breaking - -pounding or rolling frees the fibers 3 Definitions of Fiber - -Botanical, Commercial, and Nutritional 3 Types of textile Fibers Hard or leaf fibers - -found in monocot leaf vascular bundles (sisal, Manila hemp, pineapple) 3 Types of textile Fibers Soft or bast Fibers - -found in the phloem (inner bark) of dicot stems (flax, jute, hemp, ramie) 3 Types of textile Fibers Surface FIbers - -Grow from the surface of seeds, leaves, or fruit (ex: cotton or corn) 3. Scutching - -scraping off particles 4. Hackling - -Combing the fibers 5. Spinning, bleaching, weaving / Uses - -many products, including fine linens, lingerie, and even early condoms Acorns - -Acorn: A simple, dry fruit of the oak tree Allspice (new world) - -Dried fruit of a Caribbean Tree Tastes like a combination of cinnamon/cloves/nutmeg Alternatives to rubber tree - -GUAYULE PLANT Superb source of natural rubber for latex gloves and other rubber products. Grows well in hot, arid regions - dry deserts. Also used as biofuel Alternatives to wood pulp - -Recycled paper Hemp Kenaf Agrifiber - straw, bagasse and other agricultural waste material. Annual rings - -xylem formed by the vascular cambium during one growing season One ring = one year Approximate caffeine content of chocolate bar - -13-25 mg BAMBOO - -Native to East Asia, but some species found in other continents Bioengineered Cotton - -boll-weevil resistant; cotton- polyester blends Black Pepper (old world) - -From India/East Indies Fermented dried berries of a pepper vine Boll Weevil - -•Most common pest of cotton (IMPORTANT) •Cotton is 3% of the world's land farmed, but consumes 25% of the world's pesticides! •Mad pesticides to combat them Botanical Fiber - -Long tapering cell dead and hollow at maturity Cafe Mocha - -is a latte with less steamed milk, but with chocolate syrup added Caffeine - --chemically related to purine bases in DNA (like guanine) -Caffeine is an alkaloid, group of secondary compounds found in plants, made to discourage grazing. -Desirable effects: Promotes alertness, mental cognition, reaction speed and endurance. -Improves physical performance, relieves pain, migraines -Reduce asthma, elevate mood -Stimulation of central nervous system, faster heartbeat, constriction of blood vessels, increased respiration rate, suppression of appetite, diuresis Caffeine content of common products - -Coffee (drip) 115 mg Tea 40 mg Cocoa 13 mg Coca-cola (reg. or diet) 46 mg Mountain Dew 54 mg Vivarin 200 mg Midol 600 mg Caffeines Role in Parkinson's Disease - -Studies show it ma