Worksheets7th Grade Science Final review
Total questions: 76
Worksheet time: 1hrs 1mins
Name
Class
Date
1.
In what type of environment do MOST mollusks live?
a)
Soil
b)
Freshwater
c)
Marine
d)
Terrestrial
2.
Which part of the Mollusk body is specialized for burrowing, feeding, and movement?
a)
trochophores
b)
visceral mass
c)
mantle
d)
foot
3.
What type of symmetry do MOST mollusks have?
a)
Bilateral
b)
Radial
c)
Circular
d)
Asymmetrical
4.
Which class of Mollusks include clams, oysters, and mussels?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
5.
Which class of Mollusks include squid, cuttlefish and octopus?
a)
Gastropods
b)
Bivalves
c)
Caphalopods
6.
Which class of Mollusks includes snails, slugs, or nudibranches?
a)
Cephalapods
b)
Bivalves
c)
Gastropods
7.
Which class of Mollusks include organisms that all have two shells?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
8.
Which part of the Mollusk body is the tissue covering the body and secretes the shell?
a)
Mantle
b)
Trochophore
c)
Foot
d)
Visceral Mass
9.
Which class of Mollusks include organisms that have camera-like eyes similar to humans?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
10.
Which class of Mollusks is the only class with some terrestrial species?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
11.
Which part of the Mollusk body contains organs?
a)
Foot
b)
Visceral Mass
c)
Trochophore
d)
Mantle
12.
Which class of Mollusks all have tentacles?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
13.
Which class of Mollusks have the most advanced nervous system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
14.
Which of the following is the correct description of reproduction in Mollusks?
a)
Mostly asexual
b)
Budding
c)
Regeneration
d)
Mostly sexual
15.
Which of the following is the organ used by Mollusks for excretion?
a)
gills
b)
nephridia
c)
mantle
d)
visceral mass
16.
Which of the following is the correct description of respiration in Mollusks?
a)
They use diffusion through their moist skin and gills in marine environments
b)
They use primitive lungs in marine environments and gills on land.
c)
They use nephridia to exchange oxygen and carbon dioxide
d)
They use gills in marine environments and primitive lungs on land.
17.
Which of the following is the correct description of the body cavity of Mollusks?
a)
They are protostome acoelomates
b)
They are protostome coelomates
c)
They are deuterostome coelomates
d)
They are protostome pseudocoelomates
18.
What type of body do all Mollusks have?
a)
Segmented
b)
Soft
c)
Rigid
d)
Clear
19.
How are all mollusks similar to annelids?
a)
They have shells
b)
The have trochophore larvae
c)
They are segmented
d)
They live in marine environments
20.
Which class of Mollusks have a closed circulatory system?
a)
Gastropods
b)
Bivalves
c)
Cephalopods
d)
All of the classes
21.
Which of the following terms means "spiny skin"?
a)
Porifera
b)
Echinoderm
c)
Mollusk
d)
Cnidaria
22.
What unique system of internal canals and external tube feet help starfish move and feed?
a)
nephridia
b)
ganglia
c)
water vascular
d)
water recycling
23.
What type of symmetry do echinoderms exhibit as adults?
a)
asymmetrical
b)
Bilateral
c)
Radial
d)
Circular
24.
What type of symmetry do echinoderms exhibit as larvae?
a)
asymmetrical
b)
bilateral
c)
radial
d)
circular
25.
What type of circulatory system do echinoderms have?
a)
Closed
b)
Open
26.
This belongs in the _______ phylum.
a)
annelida
b)
echinodermata
c)
arthropoda
d)
cnidaria
27.
These are ___________.
a)
bivalves
b)
univalves
c)
cephalopods
d)
gastropods
28.
The organism in the picture is a(n)
a)
echinoderm
b)
mollusk
c)
arthropod
d)
cnidarian
29.
Echinoderms have the ability to regenerate body parts.
a)
False
b)
True
30.
What type of body do all Mollusks have?
a)
Segmented
b)
Soft
c)
Rigid
d)
Clear
31.
The organism shown is an example of a(n)
a)
mollusk
b)
cnidarian
c)
sponge
d)
echinoderm
32.
humans have
a)
radial symmetry
b)
bilateral symmetry
c)
no symmetry
33.
butterflies have
a)
radial symmetry
b)
bilateral symmetry
c)
no symmetry
34.
sponges have
a)
radial symmetry
b)
bilateral symmetry
c)
no symmetry
35.
The highest level of organization in an animal is
a)
cell
b)
tissue
c)
organ
d)
system
36.
Which of the following organisms has a closed circulatory system
a)
round worms
b)
flatworms
c)
segmented worms
d)
sponges
37.
What is one of the four key functions of animals?
a)
obtaining food and oxygen
b)
swimming
c)
making sound
d)
caring for young
38.
What is the correct order of relationships from basic to more complex?
a)
cells, tissues, organs, systems
b)
tissues, organs, systems, cells
c)
organs, systems, cells, tissues
d)
cells, organs, tissues, systems
39.
Earthworm
a)
Phylum Platyhelminthes
b)
Phylum Nematoda
c)
Phylum Annelida
40.
5 hearts
a)
Phylum Platyhelminthes
b)
Phylum Nematoda
c)
Phylum Annelida
41.
Earthworms have setae, which are like bristles that help them ___.
a)
move
b)
eat
c)
reproduce
42.
What do earthworms eat?
a)
grass
b)
insects
c)
dirt
d)
organic matter in the soil
43.
segmented worms _______________ themselves to hide from predators and prey.
a)
bud
b)
burrow
c)
paint
d)
dress up
44.
segmented worms like to eat ______________ plants and animals in the soil
a)
live
b)
decaying
c)
green
d)
fuzzy
45.
Stores food and water for the cell.
a)
Cytoplasm
b)
Cell Wall
c)
Vacuole
d)
Nucleus
46.
Controls what enters and leaves the cell
a)
Mitochondria
b)
Cell Membrane
c)
Cell Wall
d)
Nucleus
47.
According to cell theory, where did this cell come from?
a)
another living cell
b)
energy from sun
c)
a multicellular organism
d)
the nonliving environment
48.
What do all of these organisms have in common?
a)
They all have uniform offspring
b)
They are all made of cells
c)
They possess the same features
d)
They have the same internal and external structures
49.
Robert Hooke, Anton van Leeuwenhoek, Theodor Schwann, Rudolf Virchow, and Matthias Schliden were all responsible for what theory?
a)
The Theory of Gravity
b)
The Theory of Relativity
c)
The Cell Theory
d)
The Theory of Continental Drift
50.
What tool do you use to view the cells?
a)
metric ruler
b)
centrifuge
c)
microscope
d)
pipette
51.
Which of the following is NOT a cell theory.
a)
All non-living things are made of cells
b)
All cells come from pre-existing cells
c)
Cells are the basic unit of structure and function of all living things
52.
An organism made of one cell is called
a)
unicellular
b)
multicellular
53.
what is the control center in a cell
a)
mitochondria
b)
DNA
c)
nucleus
d)
movement
54.
also known as the "powerhouse"
a)
cell membrane
b)
storage
c)
cytoskeleton
d)
mitochondria
55.
the photosynthesis equation is
a)
6CO2+6H2O+sunlight~C6H12O6+6O2
b)
nothing
c)
H2O
d)
CO2
56.
What is known as the brain of a cell
a)
cell wall
b)
Cell membrane
c)
Nucleus
d)
Nuclues
57.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
58.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
59.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
60.
What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)
(E= 3 eyes, e= 1 eye)
a)
EE
b)
Ee
c)
ee
d)
EE or Ee
61.
Which of the following terms refers to the different possibilities of a gene?
a)
chromosome
b)
DNA
c)
Punnett Squares
d)
allele
62.
If something is heterozygous, it is also...
a)
purebred
b)
hybrid
c)
dominant
d)
recessive
63.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
64.
What does a Punnett Square help you do?
a)
Determine the ratio of phenotypes
b)
Determine the ratio of genotypes
c)
Predict possible traits the offspring will have
d)
All of the above
65.
A phenotype is the...
a)
letter combination
b)
dominant gene
c)
recessive gene
d)
physical appearance
66.
Another word for homozygous is...
a)
purebred
b)
hybrid
c)
heterozygous
d)
dominant
67.
Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
68.
Purple is dominant to white. A heterozygous purple flower is crossed with a white flower. What are the genotypes and phenotypes of the offspring?
a)
100% Pp (purple)
b)
50% Pp (purple); 50% pp (white)
c)
75% Pp (purple); 25% pp (white)
d)
25% PP, 50% Pp, 25% pp
75% purple, 25% white
75% purple, 25% white
69.
In screech owls, red feathers are dominant over gray feathers. If two heterozygous red-feathered owls are mated, what percentage of their offspring would be expected to have red feathers?
a)
25%
b)
50%
c)
75%
d)
100%
70.
A single piece of coiled DNA found in the cells; contains genes that encode traits.
a)
gene
b)
chromosome
c)
trait
d)
DNA
71.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
72.
father of genetics
a)
Gregor Mendel
b)
James Watson
c)
Dr. Robbins
d)
Francis Crick
73.
Which of these lists presents the stages of the cell cycle in the correct order?
a)
interphase, mitosis, cytokinesis
b)
cytokinesis, mitosis, interphase
c)
mitosis, interphase, cytokinesis
d)
interphase, cytokinesis, mitosis
74.
Which of these phases of mitosis take place first?
a)
anaphase
b)
telophase
c)
prophase
d)
metaphase
75.
Matt uses a microscope to look at slides of plant cells. He sees a cell with two nuclei that have visible chromosomes. In which stage of cell division is this cell?
a)
anaphase
b)
prophase
c)
telophase
d)
interphase
76.
Identify the stage of mitosis.
a)
interphase
b)
prophase
c)
metaphase
d)
anaphase
100 %
