Name _________________________________________ Period _____ Reproduction – It’s All In The Cells!
Use pages 103-107 in Life’s Structure and Function to complete the study guide below.
1. Reproduction is the process by which an organism produces ______________________________________.
2. Since organisms do not live forever, __________________________ is necessary for the continuation of
each species.
3. There are two types of reproduction: ______________________ and _____________________ reproduction.
4. Asexual Reproduction - A new organism is produced from only ___________________________________
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Since there is only one parent, the offspring are genetically _______________________ to the parent.
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Asexual reproduction happens due to the division of _____________________.
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There are _____________________ types of asexual reproduction
o Fission – The cell copies its genetic material and then divides into ________________________
organisms. (Examples: Bacteria)
o Budding – A new organism forms on the parent organism and ___________________________
to live on its own when it is large enough. (Examples: Hydra and yeast)
o Regeneration – An organism breaks into pieces, and a whole new organism will ____________
from each piece. (Examples: Sponges and sea stars)
5. Sexual Reproduction – A new organism is produced from the cells of _______________ parents.
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Two sex cells come together to form a ________________________ individual.
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The male sex cell is called a _________________.
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The female sex cell is called an _______________.
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When the egg and the sperm cells join together, it is called __________________________________.
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Sex cells contain ________________ the number of chromosomes as other, non-sex cells have. This is
because sex cells are meant to join another sex cell.
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The new organism will receive half of its genetic material from its ___________________________ and
half of its genetic material from its _____________________________.
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Sexual reproduction produces a new organism with a ________________________ identity. The
offspring will not be an identical copy of its parents.
6. Nature or Nurture?
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Some traits or characteristics of organisms are __________________________. This means the trait
is determined by the organism’s genetic material. (Examples: flower color or height)
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Other characteristics of organisms are ________________________ behaviors. This means the trait
is not the result of the organism’s genetic material (Examples: table manners or covering your
mouth when you cough)
Read each description of a trait of an organism. Then write inherited or learned on the line to indicate
what type of trait each one is.
A. _____________________ A lion cub’s fur is the color of its mother’s fur.
B. _____________________ A child makes his bed just like his father does.
C. _____________________ The owl’s beak is curved like its father’s beak.
D. _____________________ The puppy grows to be as tall as his father.
E. _____________________ The girl shakes the hand of someone she meets just like her mother does.
WRAP UP QUESTIONS
1. Explain where inherited traits come from in both sexual and asexual reproduction. _____________________
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2. Explain why organisms must reproduce. ______________________________________________________
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3. Comparing sexual and asexual reproduction, explain what the key difference between them is. ___________
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4. List the three forms of asexual reproduction. ___________________________________________________
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