Chapter 4 - Reproduction Among Animals Flashcards
Second Quarter
The reproductive system of mammals has two divisions, namely:
an external sexual organ and a pair of testicles
In most male mammals, the organ is called __________. It is an elongated part that is extended out of the male main body cavity.
penis
Another part of the male RS of mammals are the testicles, they produce the male gametes called _________.
sperm cells
The female RS of mammals also has two divisions:
- the vagina and uterus
- pair of ovaries
Ovaries produce the female gametes called ______.
egg cell
This is structured like a canal because its function is to receive the sperm delivered by the male through the penis. This also acts as a canal for the live birth of the mammalian young.
vagina
The major reproductive organs of fishes are:
testes and ovaries
In male sharks and rays, modified fins function as sexual organs. They are called __________.
claspers
The secondary reproductive organ of fishes where they release their egg cells and sperm cells.
papilla (plural: papillae)
Birds DO NOT have external reproductive organs like the penis or the vagina, instead, they possess ___________.
cloaca
The organ in the bords through which waste materials, sperm cells, and eggs exit.
cloaca
A term used to describe organisms that carry both sexual organs or change their sex due to various factors such as climate.
Hermaphroditism
Organisms that exhibit hermaphroditism
hermaphrodites
Examples of hermaphroditic organisms
earthworms, clownfish
This is a structure of an animal that functions to get attention from the opposite sex. Peacocks are famous for this type of ornamentation.
Biological ornamentation
