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7th Grade Science Spring Semester Test 2017
Test Description: 7th grade Spring Semester Test. Topics: Human Body, Genetics, Project Alert
Instructions: Answer all questions to get your test result.
1) Which pair of body systems is MOST responsible for support and movement?
A
digestive and circulatory
B
excretory and nervous
C
immune and reproductive
D
skeletal and muscular
2) All living organisms are created through
A
reproduction
B
growth
C
metabolism
D
respirations
3) What process does a farmer use to produce corn plants with desired traits?
A
natural selection
B
selective breeding
C
asexual reproduction
D
crop rotation
4) Scientist use a diagram called ______________________to predict the results of breeding offspring.
A
a pedigree
B
cloning
C
a Punnett square
D
genetic disorder
5) The physical appearance of a trait as a result of its combination of genes is called the organism's ____________.
A
genotype
B
homozygous
C
phenotype
D
heterozygous
6) Why do you get ill after visiting a friend who has the flu?
A
You did not dress warmly.
B
The room was too cold.
C
You ate the same kind of food.
D
The virus that causes the flu entered your body.
7) If SpongeBob is heterozygous for round eyes and his wife has oval eyes, what are the probabilities of for eye shape of their offspring?
A
Their offspring chances are 75% for round eyes and 25% for oval eyes.
B
Their offspring chances are 75% for oval eyes and 25% for round eyes.
C
Their offspring chances are 50% for round eyes and 50% for oval eyes.
D
Their offspring will have a 100% chance for round eyes.
8) What is true of the offspring of organisms that reproduce sexually with 2 parents?
A
They are genetically identical to one of the parents.
B
They have some genetic traits of both parents, but they are not exactly like either.
C
They always have twice as many chromosomes as their parents, since they have two parents.
D
Genetically, they are completely different from their parents.
9) Which organ plays the largest role in controlling the body with the nervous system?
A
the stomach
B
the brain
C
the muscles
D
the skin
10) Patrick married Patti. He is purebred for his tall head shape (T), which is DOMINANT over a short head (t). Patti is a short-headed woman, what are the possibilities for type of heads their offspring may have?
A
Their children's chances are 75% for tall heads and 25% for short heads.
B
Their children's chances are 50% for tall heads and 50% for short heads.
C
Their children's chances are 100% to have short heads.
D
Their children's chances are 100% to have tall heads.
11) What is true of Queen Victoria's family pedigree?
A
Queen Victoria was a carrier of hemophilia.
B
Her husband, Albert, had hemophilia.
C
Queen Victoria had hemophilia.
D
Both males named Leopold were carriers of hemophilia.
12) In pea plants, stem height is a trait. The dominant form is tall (T) and the recessive form is short (t). What is the genotype for a heterozygous tall pea plant?
A
TT
B
Tt
C
short
D
tall
13) Which of the following organs systems breaks down food for nutrients for the body?
A
cardiovascular
B
digestive
C
endocrine
D
nervous
14) When both the dominant and recessive traits are present, for example Rr representing round eyes, the genotype is _______________ for the trait.
A
homozygous
B
heterozygous
C
a genetic disorder
D
a recessive allele
15) In pea plants, stem height is a trait. The dominant form is tall (T) and the recessive form is short (t). What is the PHENOTYPE for a heterozygous tall pea plant?
A
tt
B
Tall
C
short
D
TT
*select an answer for all questions
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