Topic: Reproduction
Aim: Describe the different types of asexual
reproduction.
Do Now: I mmunity
https://www.youtube.com/watch?v=LuQE7N2hGRQ
HW: Finish Asexual Repro Notes
Review:
1. Identify the type of reproduction described:
a. Two parents SEXUAL
ASEXUAL
b. Offspring genetically identical to parents
c. Uses mitosis ASEXUAL
d. One parent ASEXUAL
e. Offspring NOT genetically identical to parents
SEXUAL
f. Uses meiosis SEXUAL
g. Used by more complex organisms SEXUAL
h. Need sperm and egg cells to join SEXUAL
2. Identify the cell division described:
a. TWO daughter cells produced. MITOSIS
b. Daughter cells NOT genetically identical to
parent cell MEIOSIS
c. Used during ASEXUAL reproduction MITOSIS
d. FOUR daughter cells MEIOSIS
e. Chromosome # stays the same MITOSIS
f. Used for SEXUAL reproduction MEIOSIS
g. Replicates SOMATIC CELLS. MITOSIS
h. Chromosome # splits in half MEIOSIS
i. Daughter cells genetically identical to parent
cell MITOSIS
j. Produces GAMETES. MEIOSIS
Topic: Reproduction
Aim: Describe the different types of asexual
reproduction.
Do Now: Immunity Review ISA (5 minutes)
HW: Respiratory and Excretory Systems take
Home Test – Due Tuesday, March 29
A
Refer to the diagram below
which represents a pathogen.
Answer questions 1 - 4 on the
loose-leaf below.
1. Identify structure A.
ANTIGENS
2. Identify the substance
produced that will bind to
structure A.
ANTIBODIES WILL ATTACH
TO STRUCTURE A.
A
3. Describe the body’s reaction when this
pathogen enters the body in the space
below. Be sure to use the following terms
in your answer: pathogen, antigen,
antibodies, shape.
When a pathogen enters the body,
antibodies will be produced.
Antibodies attach to the antigens to help
destroy the pathogen.
The shape of the antibody and antigen
must match perfectly.
4. Identify the type of immunity that
would be the end result of this pathogen
entering
the body and how it can be
A
4. Identify the type of immunity that
would be the end result of this pathogen
entering the body and how it can be
acquired.
Active immunity
Acquire active immunity by:
- Getting the disease
- Getting a vaccine
3.
Binary Fission
• Equal division of cytoplasm
• Ex: Ameba, paramecia, bacteria
33
chromosomes
MITOSIS
33
33
5.
Budding
• Unequal division of cytoplasm
• The “bud” has the same # of
chromosomes as parent
• Ex: yeast, hydra
1.
Sporulation
• Formation of SPORES = cells
produced by mitosis and grow into a
new organism genetically identical to
the parent
• Ex: fungi (bread mold, mushrooms)
http://www.youtube.com/watch?v=0imKJ1vnTpk
2.
Regeneration
• Ability to grow back a lost body part
• New organism can grow from part of
parent (FRAGMENTATION)
• Ex: starfish, lobster, lizard,
Salamanders: Salamanders can regenerate legs. When a
salamander is in the larval stage, it can regenerate a limb
in thirty to forty days! Adult salamanders can also
regenerate limbs, but it takes much longer and the leg is
not as large as the original one.
Lizards: Lizards have the ability to replace lost limbs or a
lost tail. This is important because when a predator such
as a hawk captures the tail, the lizard can escape. The
new tail lacks the backbone of the original tail.
Crayfish: Cray fish can regrow claws, pinchers, or legs. It
is easy to recognize the regenerated part because it is
smaller than the other parts. Just like the lizard, it can
break off a claw or leg so that it can escape when
captured by a predator.
4.
Vegetative Propagation
• Asexual reproduction in PLANTS
• Types: runners, bulbs, tubers, cuttings
Let’s review!
1. Which type of cell division is used for asexual
reproduction? Mitosis
2. Describe the offspring of asexual reproduction.
Genetically identical to parent
3. Explain the difference between binary fission and
budding. Binary fission is an EQUAL division of
cytoplasm. Budding is an UNEQUAL
division of cytoplasm.
4. How are spores produced? Mitosis
5. Which type of asexual reproduction is used by
plants? Vegetative propagation
The type of asexual reproduction in which
involves the production of single cells by
mitosis that are released into the
environment is called
1. regeneration
2. binary fission
3. sporulation
4. vegetative propagation
The type of asexual reproduction in which
one cell divides into to two cells that are
of equal size is called
1. regeneration
2. binary fission
3. sporulation
4. vegetative propagation
Asexual reproduction in plants is known
as
1. regeneration
2. vegetative propagation
3. binary fission
4. sporulation
Asexual reproduction that involves the
regrowth of a lost body part is known
as
1. regeneration
2. vegetative propagation
3. binary fission
4. sporulation
Asexual reproduction in which there is
an unequal division of cytoplasm is
called
1. regeneration
2. budding
3. binary fission
4. sporulation
Identify the type of asexual reproduction
described.
1.An organism grows back a lost body part.
regeneration
2. Unequal division of cytoplasm. budding
3. Specialized cells are released and eventually
develop into a new organisms that are identical to
the parent. sporulation
vegetative
4. Asexual reproduction in plants.
propagation
5. Equal division of cytoplasm.
binary fission
1. Identify the labeled
structures in the diagram.
2. Identify the bones that vertebrae
protect the spinal cord.
D
vertebrae
3. Identify the bones that
protect the brain.
cranium
4. Identify the bones that
protect the heart and lungs.
rib cage
5. Where is cartilage found?
In rib cage, tip of nose, ears,
between bones (joints), between
vertebrae
A
cranium
rib cage
B
C
humerus
E
pelvis
F
femur