TEKS 7.14B compare the results of uniform or divers offspring from sexual reproduction or asexual reproduction
Sexual or Asexual Reproduction?
Look at the statements below and place them in the column of the chart that
they best describe. You may use your notes.
Two parents
Variation so offspring are different
One parent
Able to adapt to environment
Requires sex cells for fertilization
Used by many single celled organisms
Usually faster and easier
Prevents organisms from adapting
Results in natural selection
Offspring are all identical
Does not require fertilization
Used by most animals & flowering plants
Offspring gets ½ their genetic information from each parent
Offspring have 100% the same chromosomes as the parents
Sexual Reproduction
Asexual Reproduction
Use the diagrams and descriptions on the following pages to determine the type
of reproduction used by each of the organisms. Record your answers in the chart
below.
Diagram
1
2
3
4
5
6
7
8
9
10
Organism
Type of Reproduction
1.
new tuber
A potato is buried in the
soil. The eyes of the potato
grow into new potato
plants.
2.
A female frog lays her eggs then a
male deposits his sperm on them.
The eggs hatch into tadpoles that
eventually lose their tails and legs
to become frogs.
3.
A litter of black and white puppies
are born to a solid black mother
and a solid white father.
4.
If an arm is cut off a starfish with
part of the center, the arm can
grow into a whole new starfish.
The original starfish will grow back
the lost arm.
5.
Strawberry plants send out
runners that grow into new
strawberry plants.
After mating, butterflies lay eggs
which hatch into caterpillars that
later for a chrysalis from which an
adult butterfly emerges.
6.
7.
bud
8.
A hydra develops a bud which
eventually breaks off the parent to
form a new individual.
Lizards reproduce using internal
fertilization and most species lay
eggs that hatch into fully
developed young. Some species of
lizards have the ability to grow
back their tails if it is lost or
injured.
9.
Amoebas are able to divide
forming two individual identical
cells.
10.
To produce offspring, planarians
exchange sperm that fertilizes
eggs which develop inside the
body. Planarians also have the
unique ability to detach their tails
and grow into two new identical
individuals.
Complete the following statements using your own knowledge and wording.
The advantages of sexual reproduction are ________________________
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The advantages of asexual reproduction are _______________________
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The most important difference between the two types of reproduction is
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