This is a regulation of the internal environment of an organism.

One group of reptiles, characterized by the fossil ark metal x

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

1. isogamy 1 organisms with gametes of the same size and shape 2. anisogamy organisms with gametes of different sizes and shapes 3. oogamy 2 organisms with gametes of the same shape but different sizes 4. gonads gamete-producing organs in lower plants 5. gametangia gamete-producing organs in animals