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3rd Nine Weeks Review-2020 7th Grade
Test Description: Plant Systems, Genetics
Instructions: Answer all questions to get your test result.
1) Which of the following statements about reproduction is true?
A
asexual reproduction invovles two parents and the offspring are genetically identical to one of the parents
B
asexual reproduction involves one parent and the offspring is dramatically different from the parent
C
sexual reproduction involves two parents and the offspring have a combination of DNA from each parent
D
sexual reproduction involves one parent and the offspring has their DNA in a different order
2) Which is most true regarding offspring of asexual reproduction?
A
the offspring came from one parent and are identical to the parent
B
the offspring came from two parents and are genetically diverse
C
the offspring came from two parents and each is identical to the other
D
the offspring came from one parent and has two copies of the parents DNA
3) Where do you find genes?
A
In the cell membrane
B
on DNA, inside chromosomes, inside the mitochondria of cells
C
on DNA, inside chromosomes, inside the nucleus of cells
D
Inside the vacuole of plant cells
4) What gene is the stronger gene that will always show up if it is present?
A
dominant
B
homozygous
C
phenotype
D
recessive
5) Which is the weaker gene, that only shows up if there are two of the genes present?
A
dominant
B
genotype
C
recessive
D
heterozygous
6) Which of the following is a genotype?
A
short
B
Aa
C
tall
D
homozygous
7) Which is a phenotype?
A
Bb
B
Black fur
C
genotype
D
CC
8) If black fur (B) is dominant to white fur (b) which of the following genotypes will belong to a white furred rabbit?
A
bb
B
BB
C
Bb
D
there is no way to tell
9) If tall (T) is dominant to short (t) which of the genotypes belong to a tall plant?
A
Only TT
B
Only tt
C
Both TT and Tt could be tall
D
Only Tt
10) Which is a heterozygous genotype?
A
Tt
B
TT
C
RR
D
SS
11) Which term means having the same genes for a particular trait?
A
Homozygous
B
Heterozygous
C
Autotroph
D
Heterotroph
12) The sprouting of a seed to form a new plant
A
Germination
B
Gestation
C
Geotropism
D
Phototropism
13) Phototropism is a plant's response to-
A
touch
B
light
C
gravity
D
water
14) Which is the term for a plant's response to gravity?
A
hydrotropism
B
phototropism
C
thigmotropism
D
geotropism
15) Thigmotropism is a plant's response to-
A
touch
B
water
C
gravity
D
light
16) What is the name of the pigment that absorbs radiant energy?
A
glucose
B
chlorophyll
C
thigmotroph
D
chlorplasts
17) What part of the cell is where photosynthesis occurs?
A
cytoplasm
B
nucleus
C
chloroplasts
D
vacuole
18) What is the main goal of photosynthesis?
A
to make oxygen
B
to release water
C
to make glucose as food for the plant
D
to take in carbon dioxide
19) What two things go INTO the plant (reactants) for photosynthesis
A
oxygen and glucose
B
carbon dioxide and water
C
carbon dioxide and glucose
D
water and oxygen
20) What part of the plant is responsible for turgor pressure?
A
cytoplasm
B
vacuole
C
nucleus
D
chloroplasts
*select an answer for all questions
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