Download 1 - SSHS Science 9

Asexual Reproduction Worksheet
1. Single-celled organisms, such as Paramecium, can reproduce very quickly by
asexual reproduction. A Paramecium can divide in two, grow and be ready to
divide again in 8 hours.
Answer the following questions:
(a) What must a Paramecium do if it is to grow in size before it can divide?
(b) One Paramecium is placed in a jar of pond water. If the conditions are perfect
it will divide in two every 8 hours. How many Paramecia would be present in the
jar after
(i) one day (24h) and
(ii) one week?
(c) In fact the numbers of Paramecia in the jar will probably follow the pattern
shown in the graph opposite. After one week are there: more Paramecia or less
Paramecia than you calculated in part (b)?
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Asexual Reproduction Worksheet
(d) Can you explain why there should be a difference between your calculations
and this graph?
2. Matching Select the organisms that perform this type of sexual reproduction.
_____1. Binary Fission
_____2. Budding
_____3. Fragmentation
_____4. Regeneration
_____5. Vegetative reproduction
A. Star fish
B. Amoeba
C. yeast
D. Hydra
E. White potato plant
Matching II. Select the appropriate definition for each type of asexual
reproduction.
_____1. Mitosis
A. growing back a missing part
_____2. Fragmentation
B. section of a cell grows and seperates
from the original cell
_____3. Spore Formation
C. cellular division
_____4. Binary Fission
D. smaller Indentical cells produced
from frequent cell division
_____5. Budding
E. organism divided into two with a copy
of parents DNA
3. What are the advantages to asexual reproduction?
4. What are the advantages of sexual reproduction?
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