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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 greater genetic variation
B
to produce offspring that have specific traits
C
to produce offspring that are genetically identical
D
to produce offspring that have no genetic similarities to one another
2) What can the location of a fossil in a rock layer tell scientists about the organism?
A
how long ago the organism lived
B
the exact age of the fossil
C
that the organism is now extinct
D
how many offspring the organism had
3) Which of the following is a true statement about asexual reproduction?
A
It does not involve chromosomes
B
It increases genetic diversity.
C
It results in offspring that are genetically identical.
D
It requires two parents.
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 carry out the same life processes.
C
The puppies and their parents have similar genes.
D
The puppies and their parents have the same organ systems.
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
The climate changed on the east side of the Rocky Mountains, and the birds did not have adaptations for the new environment.
B
Predators were more common on the west side of the Rocky Mountains.
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
sexual reproduction
B
vegeta tive propagation
C
budding
D
asexual reproduction
7) What type of clues can body fossils give us about a fossilized animal?
A
the color of the animal's fur
B
the size and shape of the animal
C
whether the animal had offspring
D
whether the animal enjoyed runnIng
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 fossil record shows that humans have developed a smaller chin in the last few hundred thousand years.
B
The development of air conditioning allows more people to live in the desert Southwest.
C
The bones of the human hand and the whale flipper share a basic common form.
D
The horses of today have longer leg bones than horses of the past.
9) How do scientists learn about organisms such as dinosaurs that disappeared from Earth long ago?
A
by studying decaying organisms
B
by using only their imaginations
C
by examining igneous rocks
D
by examining fossils
10) What is inbreeding an example or?
A
natural selection
B
evolution
C
selective breeding
D
mutation
11) The type of reproduction that involves the joining of two specialized cells called gametes is
A
sexual reproduction.
B
vegetative propagation
C
budding.
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
mutation
B
adaptation
C
extinction
D
asexual reproduction
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
recessIve
B
hybrid
C
dominant
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
selective breeding and asexual reproduction
B
photosynthesis and asexual reproduction
C
photosynthesis and sexual reproduction
D
mutation 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
There will be no physical or behavioral change in the birds.
B
Some of the birds will be larger and some will be smaller.
C
The birds will have stronger beaks.
D
All the birds will starve, and the species will become extinct.
17) What happens if an environment changes and a population in that environment has no adaptations for the new environment?
A
The population tries to develop adaptations to prevent extinction.
B
The population tries to change in its environment.
C
The population is not likely to survive and may become extinct.
D
The population forms a new species.
18) Which pair of organ systems work together to fight viral diseases such as the Ou?
A
circulatory and immune
B
digestive and reproductive
C
immune and excretory
D
respiratory and nervous
19) Which of these cell structures is involved in the inheritance of traits?
A
chromosome
B
mitochondrion
C
cytoplasm
D
chloroplast
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 the result of adaptations to eating certain kinds of food on the islands.
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 not related to the food the birds eat but to the season.
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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