Biology Sample Exam

Question 1

______ are the mammalian group that lacks a placenta.

Answer 1

Marsupials

Question 2

Swim bladders ______.

Answer 2

help bony fish maintain buoyancy

Question 3

The simplest animals to have a complete digestive tract are ______.

Answer 3

roundworms

Question 4

All of these characteristics are shared by annelids and arthropods EXCEPT: 
A) bilateral symmetry 
B) a true coelom 
C) segmentation 
D) an exoskeleton 
E) a complete digestive tract

Answer 4

D) an exoskeleton

Question 5

Humans are chordates. Which animal group is most closely related to chordates?
A) mollusks B) annelids C) arthropods D) echinoderms E) cnidarians

Answer 5

D) echinoderms

Question 6

The arthropod skeleton is composed of ______.

Answer 6

chitin

Question 7

What name is given to the food-trapping cells of sponges?

Answer 7

amoebocytes

Question 8

Features unique to mammals include ______.

Answer 8

the presence of hair

Question 9

______ are the most diverse group of arthropod.

Answer 9

Insects

Question 10

Which of these animals exhibits segmentation?

A) jellyfish B) hookworm C) planarian D) grasshopper E) tapeworm

Answer 10

grasshopper

Question 11

Having a true coelom distinguishes ______ from ______.

Answer 11

annelids . . . roundworms

Question 12

Characteristics shared by both reptiles and birds include ______.

Answer 12

the amniotic egg

Question 13

The ectoderm gives rise to _______________.

Answer 13

epidermis

Question 14

The increase in global temperature that is the greenhouse effect is primarily due to ______.

Answer 14

CO2 slowing the escape of heat from Earth

Question 15

The term “stewardship” means __________.

Answer 15

caretaker

Question 16

Fragmented populations ______.

Answer 16

are likely to exhibit low levels of genetic diversity

Question 17

How did scientists monitor the spread of the Kudzu vine?

Answer 17

biological control

Question 18

What factors have contributed to contributed to the overpopulation problem?

Answer 18

A. Medicinal advancements
B. Technology
C. Better quality of life

Question 19

_________ are organisms that have extensive parental care, produce fewer offspring, offspring have a longer lifespan.

Answer 19

Equilibrial

Question 20

Currently, there are ____ people on planet Earth.

Answer 20

7 billion

Question 21

The greatest threat to biodiversity is?

Answer 21

habitat destruction

Question 22

The ecological niche is __________.

Answer 22

The biotic and abiotic resources the organism consumes

Question 23

The closest algal relatives of land plants are _____.

Answer 23

charophytes

Question 24

Most bryophytes, such as mosses, differ from all other plants in that they _____.

Answer 24

lack vascular tissue

Question 25

The diploid generation of the plant life cycle is called the _____.

Answer 25

sporophyte

Question 26

The diploid sporophyte stage is dominant in the life cycle of all of the following EXCEPT _____. a. a pine tree b. a rose bush c. a moss d. a fern

Answer 26

c. a moss

Question 27

In contrast to bryophytes, the dominant stage of the vascular plant life cycle is the _____.

Answer 27

sporophyte

Question 28

Pollen is __________.

Answer 28

C.Male gametophyte

Question 29

Angiosperms are different from all other plants because only they have _____.

Answer 29

flowers

Question 30

The eggs of seed plants are fertilized within ovules, and the ovules then develop into _____.

Answer 30

seeds

Question 31

difference between plants and fungi?

Answer 31

Fungi are heterotrophic and plants are autotrophic

Question 32

According to plant evolution, the first plants to have vascular tissue are?

Answer 32

Ferns

Question 33

In mosses gametes are produced by _____.

Answer 33

mitosis

Question 34

Herbivory is an example of predation. True/False

Answer 34

True

Question 35

Mutualism is summarized as a (+,-) relationship. True/False

Answer 35

False

Question 36

95% of all animals belong to the phylum Chordata. True/False

Answer 36

False

Question 37

The open ocean has the highest primary productivity of all marine ecosystems. True/False

Answer 37

False

Question 38

The seastar Pisaster is an example of a keystone predator. True/False

Answer 38

True

Question 39

Competition between individuals of the same species is termed interspecific competition. True/False

Answer 39

False

Question 40

Food and water are examples of density-dependent factors. True/False

Answer 40

True