Behavior
What are chemicals that an animal releases to attract or warn other animals in their species?
What are pheromones
The cell formed when sperm and egg fuse.
(What is a zygote?)
The group of animals that feed their babies milk.
(What are mammals?)
This substance feeds the offspring that develop inside of (shelled) eggs
What is the yolk
This organ is responsible for the male production of sperm
What are testes
An animal that leads or outranks the other animals in its species
What is a dominant animal
Fertilization that happens outside the body.
(What is external fertilization?)
These animals usually lay soft, jelly-like eggs in water.
(What are amphibians?)
Birds often protect and warm their eggs by sitting on them. This is called ____.
(What is incubation?)
These organs are responsible for the female production and storage of eggs
What are ovaries
The act of traveling long distances, usually at a certain time of year
What is migration
Animals that usually have internal fertilization.
(What are reptiles, birds, or mammals?)
This animal lays hard-shelled eggs and often builds nests.
(What is a bird?)
This is responsible for transporting nutrients from the mother to the umbilical cord
This organ is responsible for protecting and nourishing (mammal) embryos
What is the placenta
What are the four main communication methods?
What are sight, sounds, chemicals, touch
The type of fertilization mostly seen in frogs.
(What is external fertilization?)
Birds building their nests is an example of what type of behavior?
What is an instinct
This is responsible for transporting nutrients from the placenta to the embryo
What is the umbilical cord
This serves as the structure that mammals hold their embryos in while they develop
Bioluminescence is a form of communication using
What is sight
This is an advantage of internal fertilization over external.
(What is better protection for the embryo?)
This group does not undergo a complete metamorphosis, instead they molt and grow new larger exoskeletons
What are nymphs
Animals that lay shelled eggs and animals that have live birth are both utilizing
Internal fertilization
Some species have males that hold the eggs until birth, examples are
What are the yellow-head jawfish, seahorse, pipefish, midwife toads...