Presentation on theme: "HW # 113- Chapter 10 Cornell Notes- due NEXT Friday 6/7 Warm up Take out your grasshopper lab. Read it over one more time. Write 3 sentences about what."— Presentation transcript:
HW # 113- Chapter 10 Cornell Notes- due NEXT Friday 6/7 Warm up Take out your grasshopper lab. Read it over one more time. Write 3 sentences about what you read on your warm up page. Week 35, Day One
Arthropods Arthropods make up the largest phylum of animals in the animal kingdom. Arthropod means “ jointed foot ”. All arthropods have jointed appendages. Arthropods also have segmented bodies and an external covering called an exoskeleton.
Insects Insects are one type of arthropod. Insects have three body regions: a head, a thorax, and an abdomen. All insects also have six legs, one or two pairs of wings, one pair of antennae, and a pair of compound eyes. Six Legs Antennae Compound Eyes
Parts Of The Head Use the diagram below to identify the parts of the head on your grasshopper. The grasshopper has 5 eyes, two compound eyes and three simple eyes. The antenna are sensory organs located on the head.
Mouth Parts Use the diagram below to identify the mouth parts on your grasshopper. As you identify each part, try and remove it with your tweezers.
The labrum is used to hold food. The mandibles are teeth used to chew food. The maxilla are used to chew and taste food. The labium is used to hold food while it is being chewed. Now use the diagram below to locate the external structures on your grasshopper.
A grasshopper ’ s eardrum, or tympanum, is located below the second pair of wings on each side of the thorax. Locate the tympanum on your grasshopper using the picture below. The tympanum is used for hearing. tympanum Like all insects, grasshoppers have six legs. The front pair are used for walking, climbing, and holding food. The middle legs are also used for walking and climbing. The hind legs are used for jumping.
Grasshoppers breath through tiny holes in their abdomen called spiracles. Try and find these tiny holes along each side of the abdomen. close up of one spiracle
A female grasshopper has a longer abdomen than a male that ends with a four pointed tip called an ovipositor. The ovipositor is used to lay eggs. Look and the end of your grasshopper ’ s abdomen and determine if it is a male or a female.