ch.1
metabolism
the uniting of a sperm cell from a pollen grain with an egg cell in the ovary- forming a seed
fertilization
Arteries
large blood vessels that carry blood away from the heart
a theory that has never been proven false
law
hypothesis
a sensible explanation to a scientific problem
taxonomy
the science of classification
When ripened fruit bursts open and scatters seeds away from the plant.
mechanical dispersal
What dome-shaped muscle helps you breathe?
diaphragm
a group of different cells performing the same function
tissues
alimentary canal
scientific name consists of what two names
genus and species
List three characteristics of monocots
- petals in multiples of three
- fibrous root system
Which part of your small intestine is food mixed with digestive juices?
duodenum
plants that live from year to year
perennials
ureters
tubes that connect the kidneys to the bladder
independent variable
the factor that changes to test your hypothesis
Explain the difference between phloem and xylem tissues.
Xylem tissue carries water and nutrients from the root hairs to the leaves.
Phloem tissue carries sugars from the leaves to the stem and roots to be stored.
Contrast at least two main joints in your body.
hinge joints- allow back and forth movement (knees, elbows, finger and toe joints)
pivot joints- allow turning movements
ball and socket joints- allow arm and leg movement in many directions
a distinct type of organism
species
B cells
a lymphocyte that produces antibodies
Contrast the three types of symmetry
bilateral symmetry- can by cut only one way to create equal right and left halves
radial symmetry- can be cut multiple ways to create mirror halves
asymmetry - cannot be cut into equal halves
Which angiosperm family has flowers arranged in spikelets, racemes, or compound racemes?
Which family participates in the nitrogen cycle?
grass family
composite family
Contrast voluntary and involuntary muscles and give examples of each.
voluntary muscles- move whenever you wish them to (skeletal muscles)
involuntary muscles - do their work whether you think about them or not (muscles in organs and respiratory, digestive, cardiovascular systems)
a tough, cord-like structure that attaches muscle to bone
tendon
model
a partial representation of something else