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Heredity And Evolution
Test Description: This is a quiz based on the 7th grade CRCT content for heredity and evolution.
Instructions: Answer all questions to get your test result.
1) Which of the following BEST explains why humans selectively breed plants?
A
to produce offspring that have no genetic similarities to one another
B
to produce offspring that have specific traits
C
to produce offspring that are genetically identical
D
to produce offspring that have greater genetic variation
2) What can the location of a fossil in a rock layer tell scientists about the organism?
A
that the organism is now extinct
B
how long ago the organism lived
C
how many offspring the organism had
D
the exact age of the fossil
3) Which of the following is a true statement about asexual reproduction?
A
It requires two parents.
B
It increases genetic diversity.
C
It results in offspring that are genetically identical.
D
It does not involve chromosomes
4) Which of these BEST describes why most of the puppies in a litter look similar to their parents?
A
The puppies and their parents eat the same kinds of food.
B
The puppies and their parents have similar genes.
C
The puppies and their parents have the same organ systems.
D
The puppies and their parents carry out the same life processes.
5) Fossil records show that a bird once lived throughout the US suddenly died off in the habitat east of the Rocky Mountains. Which of the following BEST explains why this occurred?
A
Predators were more common on the west side of the Rocky Mountains.
B
The climate changed on the east side of the Rocky Mountains, and the birds did not have adaptations for the new environment.
C
When the Rocky Mountains formed it split the birds to that the birds in the east couldn't mate with the birds in the west.
D
The habitat was more desirable on the west side of the Rocky Mountains, so the birds all moved there.
6) Some mushrooms produce spores that do not require fertilization. Reproduction by spores in these mushrooms is an example of
A
asexual reproduction
B
sexual reproduction
C
budding
D
vegeta tive propagation
7) What type of clues can body fossils give us about a fossilized animal?
A
whether the animal had offspring
B
the size and shape of the animal
C
whether the animal enjoyed runnIng
D
the color of the animal's fur
8) Biological evolution means that the traits of groups of organisms change over time. Which information would provide the least convincing evidence for evolution?
A
The horses of today have longer leg bones than horses of the past.
B
The development of air conditioning allows more people to live in the desert Southwest.
C
The fossil record shows that humans have developed a smaller chin in the last few hundred thousand years.
D
The bones of the human hand and the whale flipper share a basic common form.
9) How do scientists learn about organisms such as dinosaurs that disappeared from Earth long ago?
A
by examining fossils
B
by studying decaying organisms
C
by using only their imaginations
D
by examining igneous rocks
10) What is inbreeding an example or?
A
mutation
B
natural selection
C
selective breeding
D
evolution
11) The type of reproduction that involves the joining of two specialized cells called gametes is
A
budding.
B
vegetative propagation
C
sexual reproduction.
D
regeneration .
12) Some kinds of Staphylococcus aureus bacteria have become resistant to antibiotics. According to the theory of natural selection, what is their resistance an example of?
A
adaptation
B
asexual reproduction
C
extinction
D
mutation
13) Pea plants have green seeds only if a plant receives an allele for green seeds from each of its parents. What kind of allele produces green seeds in pea plants?
A
dominant
B
recessIve
C
hybrid
D
mutated
14) Variations may allow the physical characteristics of organisms to change over successive generations. Which of the following are MOST LIKELY to lead to variations within a species over time?
A
photosynthesis and asexual reproduction
B
selective breeding and asexual reproduction
C
mutation and sexual reproduction
D
photosynthesis and sexual reproduction
15) A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could you infer about the other fossils?
A
The organisms that formed the other fossils went extinct.
B
The rock layer killed the trilobite and the other fossils.
C
The rock layer formed before the trilobite or the other fossi ls.
D
The other fossils are about 300 million years old.
16) A bird species feeds on the seeds of a particular tree. A drought causes the outer covering of the seeds to become thicker and harder. After many generations of drought, what is the MOST LIKEL Y effect of this change on the birds?
A
All the birds will starve, and the species will become extinct.
B
There will be no physical or behavioral change in the birds.
C
Some of the birds will be larger and some will be smaller.
D
The birds will have stronger beaks.
17) What happens if an environment changes and a population in that environment has no adaptations for the new environment?
A
The population forms a new species.
B
The population is not likely to survive and may become extinct.
C
The population tries to change in its environment.
D
The population tries to develop adaptations to prevent extinction.
18) Which pair of organ systems work together to fight viral diseases such as the Ou?
A
respiratory and nervous
B
immune and excretory
C
circulatory and immune
D
digestive and reproductive
19) Which of these cell structures is involved in the inheritance of traits?
A
mitochondrion
B
chloroplast
C
cytoplasm
D
chromosome
20) Three finch species observed by Charles Darwin on the Galapagos Islands each had different beak shapes. Which statement is MOST LIKELY true about these finches?
A
The different beaks are not related to the food the birds eat but to the season.
B
The different beaks are not related to the food the birds eat but to the length of the finch's life.
C
The different beaks are the result of adaptations to eating certain kinds of food on the islands.
D
The different beaks are the result of adaptations to the amount of food available: the more food, the larger the beak.
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