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Natural Selection
Natural Selection
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Questions
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Answers
1
Two purebred short plants are crossed (short is recessive trait) all the offspring will be
hybrid short
purebred short
purebred tall
hybrid tall
2
Which of the following traits are NOT inherited?
Ear shape
Placement of eyes
Migration
Fur color
3
Few food chains have more than five levels. This is because
Most secondary consumers have only one type ofpredator
Very little energy is available for a consumer’suse beyond
There are too many types of producers
Tertiary consumers can eatonly secondary consumers
4
Which of the following is an example of natural selection?
Breeding guppies for the prettiest tails
Breeding species of dogs for certain traits
Breeding horses for the fastest race horse
Moths changing color to blend in with their surroundings
5
What does the picture represent?
Hydrotropism
Geotropism
Geotropism
Phototropism
6
Which of the following is an example of selective breeding?
Beaks of finches changing to adapt to food sources
Breeding species of dogsfor certain traits
Beaks of finches changing to adapt to food sources
Moths changing color toblend in with their surroundings
7
Species can change over time as favorable genetic traits allow organisms to survive
natural selection
phototropism
asexual reproduction
selective breeding
8
Asexual reproduction results in
fewer offspring
more numerous offspring
diverse offspring
uniform offspring
9
What does the picture represent?
Phototropism
Hydrotropism
Geotropism
Thigmotropism
10
What governs or determines inherited traits?
chromosomes
genes
nucleus
cells
11
Which is NOT part of the cell theory?
New cells are produced by division of pre-existing cells.
All living things are madeup of more than one cell.
All living things are made up of cells.
The cell is the basic unit of life.
12
Identify an external stimulus
thrist
muscle cramp
hunger
change in light
13
___ is an organism’s ability to maintain steady internal conditions
mutation
variation
evolution
homeostasis
14
Which question is this experiment most likely designed to answer?
Does air pressure affect root growth?
Does radiant light affect the direction of root growth?
Does gravity affect the direction of plant growth?
Does turgor pressure affect the rigidity of plant cells?
15
Genes that are stronger and mask other genes are said to be
purebred
hybrid
recessive
dominant
16
Use the dichotomous key to identify the organism.
Duck
Screech Owl
Pelican
Hummingbird
17
How do gills allow fish to survive under water?
Gills enable fish to hide from predators
Gills enable fish to carry out photosynthesis
Gills enable fish to float and balance in the water
Gills let fish to filter oxygen from the surrounding water
18
Which is NOT an adaptation of the cactus?
root systems that collect water from a large area
spines reduce water loss
spines attract animals to eat them
Stems that can store water.
19
The passing on of traits from an organism to its offspring is known as
taxonomy
heredity
biology
animality
20
Who was the scientist that developed the theory of natural selection?
Darwin
Mendel
Mendeleev
Newton
21
Which is NOT an adaptation of the polar bear?
Body temperature is maintained through fur.
Polar bears are adapted for hot temperature
A polar bear's front paws propel them through the water.
A thick layer of fat keeps them warm.
22
Which is true about how genetically similar bacteria are who reproduce by cell division?
Each bacteria has unique genetic makeup
The offspring have similar genetic makeup
The offspring have identical geneticmakeup
They will have a mutation
23
Use the dichotomous key to identify the organism.
Hummingbird
Vulture
Barred Owl
pelican
24
What is true about the amount of work being done with and without this ramp?
Work would increase greatly
Work would increase slightly
The amount of work would be the same
The amount of work would decrease
25
Which of the following represents low turgor pressure?
left side
right side
equal
26
Which of the following is NOT an example of an organism's response to internal conditions?
Hunger causes eating
Thirst causes drinking water
Fever causes sweating
Being scared causes muscles to tense
27
A ramp decreases the amount of force required to lift an object, but the ___ remains the same.
distance
work
height
force
28
What does the picture represent?
hydrotropism
geotropism
thigmotropism
phototropism
29
Which is NOT an example of an organism's response to external stimuli
feeling hungry
moving hand off a hot stove
being scared by someone
squinting in the sun
30
The tissue that carries water up stems of plants iscalled
chromosome
xylem
homeostasis
roots
