7th Grade Science Spring Semester Test 2017 Question Preview (ID: 37235)


7th Grade Spring Semester Test. Topics: Human Body, Genetics, Project Alert. TEACHERS: click here for quick copy question ID numbers.

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

Which of the following organs systems breaks down food for nutrients for the body?
a) cardiovascular
b) nervous
c) endocrine
d) digestive

What is true of Queen Victoria's family pedigree?
a) Queen Victoria had hemophilia.
b) Queen Victoria was a carrier of hemophilia.
c) Her husband, Albert, had hemophilia.
d) Both males named Leopold were carriers of hemophilia.

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) tall
c) TT
d) short

Which organ plays the largest role in controlling the body with the nervous system?
a) the brain
b) the stomach
c) the muscles
d) the skin

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 100% to have tall heads.
b) Their children's chances are 50% for tall heads and 50% for short heads.
c) Their children's chances are 75% for tall heads and 25% for short heads.
d) Their children's chances are 100% to have short heads.

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) Genetically, they are completely different from their parents.
c) They have some genetic traits of both parents, but they are not exactly like either.
d) They always have twice as many chromosomes as their parents, since they have two parents.

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 will have a 100% chance for round eyes.
c) Their offspring chances are 75% for round eyes and 25% for oval eyes.
d) Their offspring chances are 75% for oval eyes and 25% for round eyes.

When both the dominant and recessive traits are present, for example Rr representing round eyes, the genotype is _______________ for the trait.
a) homozygous
b) a genetic disorder
c) heterozygous
d) a recessive allele

Why do you get ill after visiting a friend who has the flu?
a) The virus that causes the flu entered your body.
b) You did not dress warmly.
c) You ate the same kind of food.
d) The room was too cold.

The physical appearance of a trait as a result of its combination of genes is called the organism's ____________.
a) genotype
b) phenotype
c) homozygous
d) heterozygous

Scientist use a diagram called ______________________to predict the results of breeding offspring.
a) cloning
b) a pedigree
c) a Punnett square
d) genetic disorder

All living organisms are created through
a) growth
b) metabolism
c) respirations
d) reproduction

What process does a farmer use to produce corn plants with desired traits?
a) selective breeding
b) crop rotation
c) natural selection
d) asexual reproduction

Which pair of body systems is MOST responsible for support and movement?
a) skeletal and muscular
b) excretory and nervous
c) digestive and circulatory
d) immune and reproductive

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