Basic Processes - The mates choose a location and construct...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
The physiological process of reproduction differs among different organisms. Bacteria or prokaryotes replicate by binary fission which is a process throughout which the bacteria reproduce their chromosomes and distribute copies equally to the two daughter cells. Reproduction is asexual and each cell is capable of separating and being totally independent. Grasshoppers reproduce by the male grasshopper introducing sperm into the vagina using its aedeagus (reproductive organ), which includes a spermatophore, a package holding the sperm, inside the female’s ovipositor. The sperm goes into the eggs via canals identified as micropyles. Afterward, the female lays the fertilized egg an inch or two underground. The eggs remain there during the winter and the babies emerge when the climate is warm enough. The reproductive process in a fish is responsive to location, time of year, and the presence of suitable mates.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The mates choose a location and construct a nest. The eggs are then released by the females and the sperm is released by the males into the nest. Then the eggs are either buried or the nest is closed off. Bears are placental mammals that keep the fetus surrounded by membranes and fluids inside the female’s body. Reproduction happens when the sperm is introduced into the female and a blastocyst is formed. The blastocyst floats freely in the uterus for several months before either implanting into the uterus and developing or being absorbed back into the female’s body. Simply stated, there are several ways of reproducing including asexual, the external fertilization of eggs, the internal fertilization of an externally laid egg, and by way of the placenta, where there is no external egg at all....
View Full Document

This note was uploaded on 01/20/2011 for the course BIO 100 taught by Professor Cantases during the Spring '10 term at University of Phoenix.

Ask a homework question - tutors are online