Investigating Reproductive Strategies Data Answer Key
Card
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Organism
Name
Method of
Reproducing
Evidence from the reading to support the method of
reproduction
sexual
Males deposit sperm into the female, where her eggs are
fertilized. The eggs are implanted after females are in
their dens.
1
Grizzly Bear
2
Desert
Grasslands
Whiptail Lizard
asexual
Species are only female. Females “pretend” to court and
mate, but no sperm is involved. Females lay eggs that are
copies of the mom (parthenogenesis).
3
Meadow Garlic
both
Bees pollinating the flowers (move pollen/sperm from one
plant to another) is sexual. Bulblets can drop from the
plant making identical copies of the parent plant (asexual).
4
Blue-Headed
Wrasse
sexual
Females spawn (release eggs) which males fertilize with
their sperm. Females can transform into males, which
increase the number of genes they put into the next
generation.
5
Amoeba
asexual
They reproduce by binary fission (splitting in two after
doubling the genetic information in the nucleus); two
identical cells are created.
6
Duck Leech
sexual
Leeches are hermaphroditic, but they must exchange
sperm with another leech in order for eggs to be fertilized.
7
Brittle Star
both
Arms can regenerate, and it can split in half by fission,
creating two identical stars. Also can release sperm and
eggs into ocean, which fertilize to make larvae.
8
Leafy Sea
Dragon
sexual
Females deposit eggs onto a male, and the male's sperm
will fertilize the eggs. The eggs cling to the dad until they
hatch.
sexual
The winning male deposits sperm in the female, where an
egg is fertilized. Females give birth and the young develop
and grow in mom's pouch.
9
Red Kangaroo
10
Spiny Water
Flea
both
Females produce eggs without fertilization (eggs develop
into clones on her back), but they can also produce males
that mate with females to produce “resting eggs”).
11
Sand Scorpion
sexual
Males deposit a packet of sperm on a stick/surface and he
moves the female so that she takes in the sperm and the
eggs are fertilized internally.
12
Salmonella
asexual
Divides rapidly by producing copies of itself through
simple cell division.