Term 1 exam

Final stage in succession which may not change for many years

Older, inactive xylem in the center of a tree trunk; supports

Structure in birds that breaks down food

Mammal that lays eggs

Caring for something so that it will be useful for a long time

Arthropod with more than 3 pairs of legs and most often 2 pairs of antennae (crabs)

Sac in bony fish that inflates and deflates enabling them to swim at different levels in water

Natural aging process that God planned for all communities 

Invertebrate that has a body filled with holes and that cannot move about on its own

  Young, active xylem that carries water and minerals from the roots to the rest of the tree

Having many small leaflets attached to one stem

 Tree with broad, flat leaves; usually deciduous

Invertebrate with a long, narrow body; may be flat, round or segmented

Hard material that makes up the exoskeleton of arthropods

Layer of trunk between phloem and xylem that makes new cells; growth tissue

Thick, woody stem of a tree

organism that lives on and benefits from another animal without benefitting that animal in any way

Sense organ in fish that makes it possible for them to feel vibrations in the water

Trees that lose their leaves yearly 

Leaves of a tree

Tough flexible rod of nerve tissue surrounded by cartilage; runs down the center of back

invertebrate with jointed legs and a hard exoskeleton; the largest phylum of invertebrates

tree with thin, needlelike leaves; usually evergreens

Arthropod with no wings, 4 pairs of legs, no antennae, and 2 body parts

Cutting down of forests

Trees that stay green year round

  Structure in birds that stores food

  Sleep through the hot season

Mammal that gives birth to under developed young which mature in its pouch

Invertebrate with a soft body and usually a shell (clams, snails, and slugs)

Member of the phylum chordata which includes all animals that have a notochord when young

Mammal that gives birth to well developed young

Arrangement of body parts so left and right sides are mirror images

Invertebrate with spiny skin  (starfish)

Having only one leaf part on a stem

Large area of land covered with trees

Invertebrate with stinging tentacles  (jellyfish)