- Grasshoppers live on all continents besides Antarctica. Most live in dry environments with lots of grass.
- They eat leaves, flowers, stems, and seeds. Occasionally they scavenge dead insects.
- They exchange oxygen and carbon dioxide between their tissues and the atmosphere through air-filled tubes called tracheae. Tracheae open to the environment through small holes called spiracles.
- In Africa and Asia, grasshoppers are known to be crop pests.
External Anatomy:
- head, thorax, abdomen: top, middle, bottom regions of grasshopper
- tympanic membrane: transmit sound from the air to the organism
- spiracle: hole used by grasshoppers for respiration; air is taken in through them and filtered by hairs in tracheae.
- ovipositor: tube that delivers eggs
- antenna: odours, touch, humidity, vibration, wind velocity and direction.
- compound eyes: can see shape, colour, movement, and tell the distance.
- mouthpieces: cut and grind food
- trochanter: attachment point for muscles
- femur: supports weight of body
- tarsus: forms ankle joint
- tibia: connects femur to tarsal segments
Internal Anatomy:
- heart (not pictured): pumps the fluid to the head from where it filters past the tissues and organs on its way back to the abdomen.
- crop: stores food
- gastric caecae: pockets of the stomach that secrete enzymes that break down food
- intestine: transports waste through the digestive system
- rectum: passageway for digested waste from the intestine to the anus
Incision Guide:
- for internal organs
- for appendages
Dissection Video:
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