Biology Quizzes Ch 26, 29, 30, 31, 34, 40

Consider Figure 26.5 in your textbook. What does each branch point signify?

A node, and/or most recent common ancestor.

Blood is classified as what type of tissue?

connective

What acts as the brain of a plant?

the tip of the radical

What type of ergotism do modern scientists suspect was the culprit in this case?

Convulsive

Which of the following are assumptions that underlie the use of the molecular clock?

Regions of genomes being compared evolve at a constant rate.

If ergotism was indeed the cause, what was the source of the infection?

Rye/grain

Which of the following represents a homology?

a cat's paw and a human's hand.

What is the major (most obvious) derived trait of humans?

bipedalism

Among the types of heat exchange, which one is the transfer of heat by the movement of air or liquid past a surface?

convection

What unique trait of the chordate will develop into the brain and spinal cord?

dorsal hollow nerve cord

The avian wing and feather were adaptations to facilitate what purpose?

flight

Which animal must eat a larger proportion of its weight in food each day: a house cat or an African lion caged in a zoo?

house cat