Apparatus:
-scalpel
-tweezers
-scissors
-pins
-microscope slide
-light microscope
-monocular
-dissection tray
-scalpel
-tweezers
-scissors
-pins
-microscope slide
-light microscope
-monocular
-dissection tray
Safety:
When dissecting the locust to prevent injuring your hand cut with the scalpel pointing away from your body. Also wear goggles to prevent parts of the locust squirting into your eyes.
When dissecting the locust to prevent injuring your hand cut with the scalpel pointing away from your body. Also wear goggles to prevent parts of the locust squirting into your eyes.
Method:
-Locate the spiracles on the thorax and abdomen using a light microscope or a monocular
-Remove the wings of the locust using scissors, then pin the locusts body onto the dissection tray using metal pins through the legs and thorax.
-Make an incision along the abdomen using scissors or a scalpel and cut from the top to the bottom of the abdomen with the scalpel facing away from the body careful not to damage any organs.
-Pin the abdomen apart and identify the organs.
-Take a sample of the tracheae or tracheoles and observe under a light microscope.
-Locate the spiracles on the thorax and abdomen using a light microscope or a monocular
-Remove the wings of the locust using scissors, then pin the locusts body onto the dissection tray using metal pins through the legs and thorax.
-Make an incision along the abdomen using scissors or a scalpel and cut from the top to the bottom of the abdomen with the scalpel facing away from the body careful not to damage any organs.
-Pin the abdomen apart and identify the organs.
-Take a sample of the tracheae or tracheoles and observe under a light microscope.
Reference:
Edexcel AS/A level Biology B1 Pearson textbook
http://www.nuffieldfoundation.org/practical-biology/dissection-ventilation-system-locust
Edexcel AS/A level Biology B1 Pearson textbook
http://www.nuffieldfoundation.org/practical-biology/dissection-ventilation-system-locust