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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
excretory and nervous
B
skeletal and muscular
C
digestive and circulatory
D
immune and reproductive
2) All living organisms are created through
A
respirations
B
growth
C
metabolism
D
reproduction
3) What process does a farmer use to produce corn plants with desired traits?
A
natural selection
B
selective breeding
C
crop rotation
D
asexual reproduction
4) Scientist use a diagram called ______________________to predict the results of breeding offspring.
A
a Punnett square
B
cloning
C
a pedigree
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
phenotype
C
heterozygous
D
homozygous
6) Why do you get ill after visiting a friend who has the flu?
A
You did not dress warmly.
B
You ate the same kind of food.
C
The virus that causes the flu entered your body.
D
The room was too cold.
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 50% for round eyes and 50% for oval eyes.
B
Their offspring chances are 75% for oval eyes and 25% for round eyes.
C
Their offspring will have a 100% chance for round eyes.
D
Their offspring chances are 75% for round eyes and 25% for oval 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 brain
B
the muscles
C
the stomach
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 tall heads.
D
Their children's chances are 100% to have short 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
Both males named Leopold were carriers of hemophilia.
D
Queen Victoria had 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
short
B
Tt
C
TT
D
tall
13) Which of the following organs systems breaks down food for nutrients for the body?
A
endocrine
B
nervous
C
cardiovascular
D
digestive
14) When both the dominant and recessive traits are present, for example Rr representing round eyes, the genotype is _______________ for the trait.
A
a genetic disorder
B
homozygous
C
a recessive allele
D
heterozygous
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
short
C
Tall
D
tt
*select an answer for all questions
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