Focus On Life Science: California Grade 7

Unit 2: Reproduction and Genetics

Unit Tests

1.
How many total phases are there in the process of meiosis? 2.a, 2.b
A)4
B)8
C)10
D)16
2.
Meiosis takes place in ________. 2.a, 2.b
A)all plant cells
B)all animal cells
C)eukaryotes that reproduce sexually
D)prokaryotes that reproduce asexually
3.
Which best describes an allele? 2.c, 2.d
A)forms of a gene with different information
B)a section of DNA that has information about a specific trait
C)all the observable traits of an organism
D)a model used to predict possible genotypes
4.
Which human blood type is an example of codominance? 2.c, 2.d
A)B
B)A
C)AB
D)O
5.
_____________ is the most common form of reproduction in eukaryotes. 2.a
A)Asexual reproduction
B)Sexual reproduction
C)Budding
D)Regeneration
6.
Observable traits and all characteristics of an organism make up it's __________. 2.c, 2.d
A)pedigree
B)genotype
C)chromosomes
D)phenotype
7.
Which term describes growth that replaces a missing part of an animal? 2.a
A)regeneration
B)budding
C)cloning
D)fission
8.
Yeast and Hydra reproduce asexually in a process called _______, in which the new organism forms on the parent organism. 2.a
A)budding
B)cloning
C)cuttings
D)fission
9.
If two alleles for a gene have different information, their genotype is called _________. 2.c, 2.d
A)dominant
B)homozygous
C)heterozygous
D)recessive
10.
The passing of traits from parents to offspring is called ________. 2.c
A)DNA
B)heredity
C)fertilization
D)genetics
11.
Which is a model used to predict possible genotypes and phenotypes of offspring? 2.c, 2.d
A)pedigree tree
B)DNA profile
C)gene therapy
D)Punnett square
12.
How do people acquire genetic disorders? 2.c, 2.d
A)Genetic disorders are caused by exposure to nuclear radiation.
B)Genetic disorders are spread by bacteria in the air.
C)Genetic disorders are caused by poor eating habits.
D)Genetic disorders are inherited from parents.
13.
Which is a seedless plant found on Earth today? 2.a
A)grape vine
B)apple tree
C)moss
D)redwood tree
14.
Which of the following is NOT a way that pollen can reach the female reproductive structures of a plant? 5.f
A)wind
B)spores
C)gravity
D)animals
15.
Which describes the accomplishment of Gregor Mendel? 2.c, 2.d
A)He recorded evidence that an organism's traits are determined by factors passed from parents to offspring.
B)He was the first scientist to clone a sheep.
C)He discovered that genes are found on chromosomes in the cell's nucleus.
D)He discovered the shape of DNA.
16.
How were Mendel's plant-breeding methods unique? 2.c, 2.d
A)He used a microscope to look at plants' genes.
B)He studied only one generation.
C)He studied many different species of plants and averaged the data.
D)He used mathematical methods to analyze large data sets.
17.
If a pea plant with purple flowers is bred with a pea plant with white flowers, the offspring always has purple flowers. You can infer that the purple color is ___________. 2.c, 2.d
A)blended
B)dominant
C)inherited
D)recessive
18.
Which describes Mendel's work? 2.d
A)It is not important in the modern study of genetics.
B)It made him famous immediately.
C)It was rediscovered after 35 years.
D)It confirmed earlier scientists' discovery of chromosomes.
19.
What is an advantage of sexual reproduction? 2.a
A)It results in genetic variation of offspring.
B)It produces identical offspring.
C)It requires only one parent.
D)All members of the species have the same genes.
20.
What is a disadvantage of sexual reproduction? 2.a
A)Members of the species grow, develop, and reproduce quickly.
B)It produces genetically different offspring.
C)It requires only one parent.
D)It can be difficult to get egg and sperm together for fertilization.
21.
Which is the result of fertilization? 2.a
A)egg
B)zygote
C)meiosis
D)sperm
22.
Mendel used which type of plants for his research? 2.c, 2.d
A)morning glory
B)day lilies
C)pea plant
D)pepper plant
23.
Which is a part of the male reproductive organ of an angiosperm? 2.a, 5.f
A)anther
B)stigma
C)ovary
D)style
24.
Which are more likely to have X-linked recessive conditions? 2.c, 2.d
A)people under the age of 20
B)females
C)people over the age of 65
D)males
25.
Daughter cells of plants that are produced from haploid structures are called __________. 2.a
A)seeds
B)zygotes
C)pollen grains
D)spores
26.
Which statement describes mitosis? 2.b
A)produces genetically identical daughter cells
B)the nucleus divides twice
C)produces sperm and egg cells
D)produces four daughter cells
27.
What is the method of sexual reproduction developed by scientists and performed in laboratories? 2.a
A)budding
B)cloning
C)regeneration
D)fission
28.
What do circles represent on a pedigree tree? 2.c, 2.d
A)sons
B)males
C)females
D)fathers
29.
Which statement describes an angiosperm? 2.a
A)It has flowers and seeds.
B)It reproduces asexually.
C)The flowers are the female reproductive organs and the leaves are the male reproductive organs.
D)Its female reproductive organ is called the stamen.
30.
Which is NOT a characteristic of the plants Mendel chose to study? 2.d
A)They come in many varieties.
B)They are easy to grow.
C)They reproduce quickly.
D)They reproduce asexually.
Grade 7
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