Exam 4 Flashcards
What are characteristics of parenchyma tissue?
-Thin walled
-Flexible
-Many sided
-Divide
Xylem conducts what materials?
Water and mineral ions
Phloem conducts what materials?
Movement of sugars and other organic solutes
Monocots and Eudicots are named by what?
Named by their leaf-like structures
Apical meristems cause what type of growth?
Primary growth - cells that divide rapidly in tips of roots and shoots
Describe what type of roots Eudicots have?
Taproot - main root with many tiny branches outward
Describe what type of root Monocots have?
Fibrous root system - roots that grow outward from the stem
Vascular and cork cambium help with which type of growth (primary or secondary)?
Secondary Growth
How many nutrients are needed for plants to survive and live healthy?
Plants require 16 different elements for growth
Why do we do cutting grafts?
-Cutting allow plants to form roots and new shoots from nodes in stem fragments from a parent plant
-Grafts allow plants to fuse with tissues from another plant
How many hormones are there that effect plants?
5 (gibberellins, auxins, cytokinin, ethylene, abscisic acid)
Name one tropisms and how it affects a plant based on the environment factors that are going on around the plant
Gravitropism - plant growth in a direction influenced by gravity
What causes leaves to fall?
Abscission
What is the protective covering of teeth?
Enamel
What causes stomach ulcers?
Helicobacter pylori
Why does the stomach have folds
The folds in the lining of the small intestine increase surface area for digestion and absorption
Where do most nutrients get absorbed?
Internal environment across the wall of the small intestine
Where does most water get absorbed?
Internal environment across the wall of the small intestine
Large intestines have bacteria that live in this environment that produce a symbiotic relationship with humans. What does the bacterium give to humans?
Feces
A diet high in what keeps you “regular”?
Fiber