WorksheetsScience Shark Attack (LS)
Total questions: 20
Worksheet time: 47mins
The Mayfly is a food source for which 3 organisms?
In the punnett square below, what belongs in the missing square
Jerome crossed two purple-flowered plants. The offspring produced from this cross had either white flowers or purple flowers, as shown in the table below.
Which of the following statements best explains why some of the offspring have white flowers?
These offspring were created by asexual reproduction.
These offspring were produced in a dark environment.
These offspring inherited a DNA sequence coding for white flowers from each parent plant.
These offspring inherited a DNA sequence coding for white flowers from only one parent plant.
For chickens, a rose comb is a dominant trait and a single comb is a recessive trait.
For a heterozygous rose comb parent and a homozygous single comb parent, what is the likelihood of the single-comb phenotype appearing in an offspring?
0 percent chance
25 percent chance
50 percent chance
100 percent chance
What is the main difference between the offspring produced by sexual reproduction and asexual reproduction?
Offspring produced sexually receive genetic material from one parent.
Offspring produced by asexual reproduction receive genetic material from two parents.
Offspring produced by sexual reproduction receive genetic material from two parents.
Asexual and sexual reproduction are the same thing.
Which of the following was directly
caused by the first photosynthetic
organisms on Earth?
A. a decrease in the amount of soil
being made
B. a decrease in the amount of salt in
the ocean
C. an increase in the percentage of
oxygen in the atmosphere
D. an increase in the average global
temperature of the atmosphere
White blood cells help protect the
human body from disease. This is an
example of which two body systems
working together?
A. muscular system and
immune system
B. muscular system and
digestive system
C. circulatory system and
immune system
D. circulatory system and
digestive system
An apple falls off a tree onto the
ground. Which of the following
best describes what eventually happens
to the material that makes up the apple?
A. Water softens the apple and its
material dissolves into the ground.
B. Sunlight decomposes the apple and
recycles its material into the soil.
C. Weather conditions rot the apple
until all its material disappears and
no longer exists.
D. Microscopic organisms break down
the apple and release its material
into the soil and air.
Which of the following statements best
explains the similarity between the bone
structures in the bat wing and the
whale flipper?
A. Both animals evolved from a
common ancestor.
B. Organisms that flew evolved into
organisms that swim.
C. All organisms evolve following the
same basic pattern.
D. All animal parts used for motion
evolve in the same way.
Humans inherit only 46 chromosomes
but show thousands of different
genetic traits. Which of the following
best explains how humans can show
thousands of traits?
A. Every cell in a human contains a
copy of all the chromosomes.
B. The body duplicates chromosomes
each time it needs to express a trait.
C. Each chromosome has hundreds
to thousands of genes that store
information for specific traits.
D. The body produces thousands of new
cells with different combinations of
chromosomes as a human grows.
The table lists some of the cell structures present in four different cells. Based on the information in the table, which cell is most likely an animal cell?
Cell 1
Cell 2
Cell 3
Cell 4
Which of the following statements
describes a characteristic that is
common to bacteria, mushrooms,
insects, and plants?
A. Each type of organism makes
its own food.
B. Each type of organism is made
of one or more cells.
C. Each type of organism has one
or more organ systems.
D. Each type of organism requires
carbon dioxide to breathe.
