Strong peristaltic contractions in the large intestine are called ________.

A) segmental contractions
B) churning contractions
C) mass movements
D) rectal propulsions
E) defecation

Which type of cartilage is associated with the external ear?

A) areolar tissue
B) fibrocartilage
C) elastic
D) hyaline

The idea that plants are unable to grow in a particular area until the soil has been enriched by an earlier community is the

A) climax-pattern model.
B) facilitation model.
C) inhibition model.
D) tolerance model.
E) soil development model.

Trichomes on plants are responsible for:

A) preventing water absorption on leaf surfaces.
B) deterring herbivores.
C) absorbing salts absorbed from the air.
D) the waxy structures on the petiole.
E) facilitating gas exchange.