science study guide Flashcards
Organisms that use an outside energy source, such as the sun, to make their own food are ________
Producers
Waxy protective layer on their leaves, stem, and flowers are _______
Cuticle
An organic compound made of chains of glucose molecules
Cellulose
Compound of tube-like cells that transport water and nutrients in some plants
Vascular tissue
Structures that anchor a non-vascular seedless plant to a surface
Rhizoids
Layer of tissue that produces new vascular tissue and grows between the xylem and phloem
Cambium
Carries water and dissolved nutrients from the roots to the stem and leaves
Xylem
Carries dissolved sugars throughout a plant
Phloem
Small openings in the epidermis
Stomata
Series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and gives off oxygen
Photosynthesis
Series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP
Cellular respiration
Any changes in an organism’s environment that cause a response
Stimuli
A response that results in plant growth toward or away from a stimulus
Tropism
Plant’s response to the number of hours of darkness in it’s environment
Photoperiodism
Substances that act as chemical messenger within the plant
Plant hormones
