My spidey senses are telling me to tell you to look in your book.
The ganglia is a concentration of nerves, analogous to the brain, best used for coordination.
a worm has no skeleton, exo or internal and has no legs, no eyes and does not prey on other animals.a spider does have a skeleton, does have eyes and legs and does prey on other animals.
It is the muscle on the upper part of a horses hind leg, above the hock.
The hard part of the tooth is actually not a living structure. The living structures are the nerves and blood vessels that are inside the tooth.
The Galapagos islands consists of wildlife that are not found any where else in the entire world. This is very significant to the theory of evolution as we can see that animals and wildlife can adapt to different environments which can completely change their breed when compared to the same species in another part of the world, and due to this they are no longer the same species.
Homologous means that there is a body part that has the same makeup of a body part of a different organism. Therefore, mosquitos and horseflies have mouth parts that are homologous.
Part 1: Evidence from the Fossil Record Part 2: Evidence from Geographic Distribution of Living Species Part 3: Evidence from Homologous Structures and Vestigial Organs Part 4: Evidence from Embryology
Homologous structures are the remnants of structures long ago that have evolved into other things now. This is why they are evidence of evolutionary relationships.
Homologous Structures
Analogous structures fit your definition.
Part 1: Evidence from the Fossil RecordPart 2: Evidence from Geographic Distribution of Living SpeciesPart 3: Evidence from Homologous Structures and Vestigial OrgansPart 4: Evidence from Embryologymore: What_are_the_four_pieces_of_evidence_for_evolution
homologous
homologous chromosomes behave independently Pairing of homologous chromosomes allowing independent segregation and crossing over is unique to meiosis. In mitosis, homologous chromosomes behave independently.
Evolution is a noun.
Ventricles
The cardiovascular system (shipping).
Homologous pairs are called tetrads because these pairs are maid up of a four-part structure. Tetrad literally means a group of four.