Chapter 6 and 7

Question 1

The ultimate source of carbon from which life is constructed is derived from

Answer 1

atmospheric carbon dioxide

Question 2

The pigment that absorbs light energy( photons) in photosynthesis is

Answer 2

chlorophyll

Question 3

A CO2 gradient between the inside and outside of a leaf is maintained during photosynthesis because

Answer 3

The CO2 concentration in the mesophyll is constantly decreasing

Question 4

The movement of water from an area of high potential to lower potential is known as

Answer 4

water potential

Question 5

The osmotic potential of a plant refers to the

Answer 5

attraction of water across a membrane

Question 6

Unlike terrestrial plants, submerged aquatic plants lack

Answer 6

stomata

Question 7

Plants can reduce water loss by

Answer 7

closing the stomata

Question 8

Animals that feed on both plant and animal tissues are referred to as

Answer 8

Omnivores

Question 9

The ingestion of fecal material for further extraction is referred to as

Answer 9

coprophagy

Question 10

A saltwater fish tends to be ________ to its surrounding aquatic environment

Answer 10

hypoosmotic

Question 11

Which of the following is done by toads to avoid hot, dry periods of the year

Answer 11

estivation

Question 12

An animal has a very thin layer of insulation between its body core and surface causing it to have a very high _______

Answer 12

thermal conductivity

Question 13

The regulation of body temperature exclusively from the external environment is referred to as

Answer 13

ectothermy

Question 14

Water flows over gills in the opposite direction of blood flow in a process known as

Answer 14

countercurrent exchange

Question 15

what influences animal heat exchange

Answer 15

fat thickness, conductivity of fat and movement of blood to the body’s surface