Evaluate Basic External Animal Anatomy and Morphology - AgriSETA

Evaluate Basic External Animal Anatomy and MorphologyPrimary Agriculture NQF Level 1 Unit Standard No: 11617318• The earsBehind each eye is a slightly sunken eardrum. They are used forhearing.• The nostrilsTwo small nostrils are found at the tip of the snout just above themouth. The nostrils are used for both smelling and breathing. The trunkThe trunk is the broadest part of the body. The trunk narrows graduallyinto the tail. The following body parts are found on the trunk.• The limbsThey are short and attached to the sides of thebody. The front limbs consist of an upper arm anda forearm with a hand with five fingers. The hindlimbs consist of a thigh, a shin and foot with fivetoes. Both the fingers as well as the toes end insharp claws.• The cloacae The tailThe opening of the cloacae (external opening of the digestive andurinary tracts) is on the underside at the end of the abdomen.The tail is cylindrical and gradually narrows to a point. ReproductionThe lizard is unisexual and its fertilisation is internal (inside the body) aftermating. The female lays a few oval white eggs, which are hatched by theheat of the sun. However, there are some lizards whose eggs developinside the body of the female. When they are fully developed they are laid,and the young break through the thin enclosing membranes. These lizardsare ovoviviparous (they develop in the mother and the eggs are laid andhatched outside the body). BreathingLizards are animals that breathe through lungs.eyenostrilmouthearVersion: 01 Version Date: July 2006