CAMPBELL BIOLOGY 12TH EDITION TEST
BANK QUESTIONS & ANSWERS
Which of the following statements best explains the similarity in the body form of penguins, seals, and
tuna?
All of the organisms needed to develop similar body shapes so they could swim.
All of their bodies have been compressed since birth by intensive underwater pressures.
Their shapes are the result of convergent evolution, which reduces drag while swimming.
This is the only shape that will allow them to maintain a constant body temperature in water. - ANS-
Their shapes are the result of convergent evolution, which reduces drag while swimming.
2 pts
Which of the following structural features of the digestive system improves the efficiency of exchange of
energy and materials with the environment?
more branching or folds
increased thickness
larger cells
decreased blood supply - ANS-more branching or folds
3 pts
Which body system assists with coordination of vertebrate body functions via chemical signals?
respiratory system
endocrine system
integumentary system
excretory system - ANS-endocrine system
4 pts
Compared with a smaller cell, a larger cell of the same shape has ________.
less surface area
less surface area per unit of volume
a smaller average distance between its mitochondria and the external source of oxygen
a smaller cytoplasm-to-nucleus ratio - ANS-less surface area per unit of volume
5 pts
Which of the following is a characteristic of nervous system signals?
They allow gradual changes to take place in the body.
They travel quickly throughout the body.
They usually impact the entire body.
, They require a voltage change to be transmitted. - ANS-They travel quickly throughout the body.
6 pts
Some animals have no gills when young, but then develop gills that grow larger as the animal grows
larger. Which of the following statements provides the best explanation for this increase in gill size?
The young of these animals are much more active than the adult, which leads to a higher BMR (basal
metabolic rate) and, therefore, a higher need for oxygen.
Relative to their volume, the young have more surface area across which they can transport all the
oxygen they need.
The young have a higher heart rate and thus a lower demand for oxygen.
Relative to their surface area, the young have more body volume in which they can store oxygen for
long periods of time. - ANS-Relative to their volume, the young have more surface area across which
they can transport all the oxygen they need.
7 pts
Which of the following options correctly lists three evolutionary adaptations that help some animals
directly exchange matter between the cells of their body and the environment?
a gastrovascular cavity, a body with two tissue layers, and a torpedo-like body shape
an external respiratory surface, a small body size, and a two-cell-layered body
a large body volume, a long, tubular body, and thin covering
an unbranched internal surface, a small body size, and thick covering - ANS-an external respiratory
surface, a small body size, and a two-cell-layered body
8 pts
Which of the following features is shared by all animals?
an external body surface that is dry
a basic body plan that resembles a two-layered sac
a body surface covered with hair to keep them warm
contact between their cells and an aqueous medium - ANS-contact between their cells and an aqueous
medium
9 pts
Which characteristic is most likely for an epithelium that is specialized for passive diffusion of materials
from one fluid-filled compartment to another?
a single layer of flattened cells
many layers of cells stacked together
large, cube-shaped cells
loosely connected cells surrounded by an extracellular matrix - ANS-a single layer of flattened cells
10 pts
What tissue lines most exchange surfaces of multicellular animals?
connective tissue
smooth muscle
neural tissue
epithelial tissue - ANS-epithelial tissue
11 pts
BANK QUESTIONS & ANSWERS
Which of the following statements best explains the similarity in the body form of penguins, seals, and
tuna?
All of the organisms needed to develop similar body shapes so they could swim.
All of their bodies have been compressed since birth by intensive underwater pressures.
Their shapes are the result of convergent evolution, which reduces drag while swimming.
This is the only shape that will allow them to maintain a constant body temperature in water. - ANS-
Their shapes are the result of convergent evolution, which reduces drag while swimming.
2 pts
Which of the following structural features of the digestive system improves the efficiency of exchange of
energy and materials with the environment?
more branching or folds
increased thickness
larger cells
decreased blood supply - ANS-more branching or folds
3 pts
Which body system assists with coordination of vertebrate body functions via chemical signals?
respiratory system
endocrine system
integumentary system
excretory system - ANS-endocrine system
4 pts
Compared with a smaller cell, a larger cell of the same shape has ________.
less surface area
less surface area per unit of volume
a smaller average distance between its mitochondria and the external source of oxygen
a smaller cytoplasm-to-nucleus ratio - ANS-less surface area per unit of volume
5 pts
Which of the following is a characteristic of nervous system signals?
They allow gradual changes to take place in the body.
They travel quickly throughout the body.
They usually impact the entire body.
, They require a voltage change to be transmitted. - ANS-They travel quickly throughout the body.
6 pts
Some animals have no gills when young, but then develop gills that grow larger as the animal grows
larger. Which of the following statements provides the best explanation for this increase in gill size?
The young of these animals are much more active than the adult, which leads to a higher BMR (basal
metabolic rate) and, therefore, a higher need for oxygen.
Relative to their volume, the young have more surface area across which they can transport all the
oxygen they need.
The young have a higher heart rate and thus a lower demand for oxygen.
Relative to their surface area, the young have more body volume in which they can store oxygen for
long periods of time. - ANS-Relative to their volume, the young have more surface area across which
they can transport all the oxygen they need.
7 pts
Which of the following options correctly lists three evolutionary adaptations that help some animals
directly exchange matter between the cells of their body and the environment?
a gastrovascular cavity, a body with two tissue layers, and a torpedo-like body shape
an external respiratory surface, a small body size, and a two-cell-layered body
a large body volume, a long, tubular body, and thin covering
an unbranched internal surface, a small body size, and thick covering - ANS-an external respiratory
surface, a small body size, and a two-cell-layered body
8 pts
Which of the following features is shared by all animals?
an external body surface that is dry
a basic body plan that resembles a two-layered sac
a body surface covered with hair to keep them warm
contact between their cells and an aqueous medium - ANS-contact between their cells and an aqueous
medium
9 pts
Which characteristic is most likely for an epithelium that is specialized for passive diffusion of materials
from one fluid-filled compartment to another?
a single layer of flattened cells
many layers of cells stacked together
large, cube-shaped cells
loosely connected cells surrounded by an extracellular matrix - ANS-a single layer of flattened cells
10 pts
What tissue lines most exchange surfaces of multicellular animals?
connective tissue
smooth muscle
neural tissue
epithelial tissue - ANS-epithelial tissue
11 pts
