Download Sc9 - a 2.2(student notes)

Learning outcomes:
1 I can distinguish between asexual and sexual reproduction.
2 I can describe examples of each type of reproduction.
2.2 . Asexual and Sexual Reproduction


involves only _______________.
All of the offspring are ____________ to the parent.

There are different types of asexual reproduction:

_______________ –
 only single-celled organisms reproduce in this
way.
 The ___________________ and each one is
____________.

Budding –
 the parent organism produces a bud (a smaller
version of itself), which eventually detaches
itself from the parent and
______________________________________________ to the parent.
 Coral also reproduces in this way, but do not
detach themselves

__________________________ –

___________are similar to seeds, but are
produced by the division of cells on the parent,
not by the union of two cells.
 One parent may produce many spores, each of
which will grow into a new individual,
____________ to its parent.

Vegetative Reproduction –
 is the reproduction of a plant _______________
a seed, including; cuttings, runners, suckers,
tubers.
Which is which???

_________________________
__________________________
__________________________
_________________________
Usually involves ______________________.


The offspring have a __________________________: half from each
parent.
________________ are essential for sexual reproduction: reproductive
cells that have one role – to join with another during reproduction.
o Ex: ______________________________________
*** This is super important to know.
Male gametes = _________________.
Female gametes = _____________________.
During mating, the SPERM CELL and EGG CELL unite. This creates one
entity, the _______________. (we call this process of uniting:
______________)
The zygote ____________________________________. Each and every
cell will be then be duplicated by splitting in half: the size of each cell stays
the same. (we call this process of duplication: ______________)
These cells duplicate until an ________________ is developed. The
EMBRYO then continues to then develop into a __________________.
*** This is super important to know.
 Like animals, plants reproduce thanks to male and female gametes
uniting.
 Except most plants contain both male gametes and female gametes.
Only a few plants have one or another.
 Like animals, these gametes unite, during ____________________, to
form a ZYGOTE that then develops into an EMBRYO.
__________ = male gametes. These
are located on the _____________.
__________= female gametes.
These are located on the ________.
____________________ occurs
when pollen from one plant is
carried to the stigma of another
plant by wind, water or animals
(bees or butterflies).
Asexual (advantages):
 Reproduce _________________
 Can build population very quickly (bacteria)
Asexual (disadvantages):
 When the environment changes, they all die __________________.
Sexual (advantages):
 Provides lots of _______________.
 This variation means the populations can _______________________
____________________________.
Sexual (disadvantages):
 It takes a lot of energy to reproduce.
 It takes a lot of time.
 This makes the populations much, much smaller
> Create a visual diagram of either:
- Asexual reproduction methods
- Sexual reproduction for plants
- Sexual reproduction for animals.
Diagram must include Visual diagram that explains the concept and brief
explanation paragraph at bottom of page.
 Optional (But great review for exam): Venn diagram or table that
compares advantages and disadvantages of both Sexual and Asexual
reproduction.
 Optional: Questions from page 36 and 37
 Exam on Unit A section 1.1 – 2.2