Abeka 7th Grade Science Test 3

Duodenum

The first section of the small intestine

Trachea

The scientific name for the windpipe.

Spleen

The largest lymphatic organ.

Bilateral symmetry

The type of symmetry that an organism has, that can be cut into equal halves in only ONE direction.

Placenta

The structure that exchanges oxygen and nutrients between the blood of an unborn child and his/her mother.

Diaphragm

Dome-shaped muscle that aids in breathing.

Gallbladder

The organ that stores bile.

Melanin

A pigment that gives the skin its color

B cells

A type of white blood cell that matures in the thymus.

Spinal cord

The structure that controls simple reflexes.

Trunk

The portion of body that contains most of the vital organs.

Pea family

the plant family that restores nitrogen to the soil

Phloem

The plant tissues that carry food downward to the stems and roots.

Law

The scientific idea that has survived many experiments and observations without ever being proven false.

Pituitary gland

The gland that is considered the "master gland".

Simple leaf

The type of leaf that has only one blade attached to the petiole.

Ecology

The branch of biology that studies the relationships between organisms in their environment.

Alveoli

The air sacs in the lungs

Hypothesis

The sensible explanation to a scientific problem.

Tendon

The structure that connects bones to muscles.

Experimentation

The term that refers to the methodical testing of scientific ideas.

Osmosis

The process through which water in the soil enters a root's root hairs.

Red blood cells

Cells that carry oxygen through the blood.

Fauna

The term referring to animals in an environment.

Germination

The early growth of a seed.

Reproduction

The process by which life continues through a new generation of organisms.

Fertilization

The uniting of a sperm cell and an egg cell.

Metabolism

The sum of all chemical processes of life.

Photosynthesis

The process by which plants manufacture their food.

Seedling

a young plant that is no longer dependent on its cotyledons

Species

a distinct type of organism

Involuntary

Muscles that work without conscious thought.

Habitat

An organism's home within the environment.

Logic

The study of reasoning .

Appendicular

One of the main divisions of the skeleton.

Fruit

A ripened flower ovary.

Mandible

lower jaw bone

Humerus

upper arm bone

Scapula

shoulder bone

Pelvis

hip bone

Insulin

The hormones released by the islets of Langerhans to regulate sugar levels in the body, along with glucagon.

Taxonomy

science of classification

Stolon

A creeping stem that runs along the soil surface.

Angiosperms

The scientific term for a flowering plant.

Tissue

A group of cells that are designed to work together as a unit.

Anther to stigma

Pollination is the transfer of pollen from the _________?

Agent

The scattering of seeds by wind, water, or animals, or people.

Grass

Grains are the fruits of this plant family.

One

A properly designed experiment should have _____ independent variable.

Composite

A plant with flower heads consisting of disk and ray flowers is from this family.

Central

The brain and spinal cord are part of this nervous system.

Alimentary

The canal that food follows through the digestive system from when it is eaten until the indigestible wastes leave the body.

Ball-and-socket

The joints that give the shoulders and hips their wide range of motion.

Nerve

The tissue used by the body to conduct impulses.

Atria

Upper chambers of the heart that receive blood

Sir Francis Bacon

He developed the scientific method

urinary system

Concentrates and removes liquid waste

Muscular System

provides movement for the body

skeletal system

supports the body and protects vital organs

cardiovascular system

Transports nutrients and oxygen to cells and carries wastes from cells.

integumentary system

Covers and protects the body.

nervous system

Controls other body systems.

Radicle

The root system of a plant develops from this part of the seed. "C" on picture.

Arteries

The largest vessels that carry blood away from the heart.

Ureters

They connect the kidneys to the bladder.

Perennials

Plants that live through more than one growing season

Pericardium

Tough membrane that encloses the heart.

Monocots

Parallel veins, petals in multiples of three, and a fibrous root system are all characteristics of these.

Cerebellum

It controls balance and muscle coordination.

Model

In science, anything that is used as a partial representation of something else is a scientific ______ of that thing.

Cartilage

This wears away as a person ages, then his bones can begin rubbing together at their joints.

Hormone

This chemical is released when the calcium level in the blood is too low. Then, the thyroid gland releases this chemical messenger that signals the bones to release calcium into the bloodstream.

Epidermis

Outer layer of skin that is "exfoliated"

Genus

First part of a scientific name. Such as in the green sea turtle, Chelonia mydas, Chelonia is the genus.