Biology Siti Mya Farzana

What is the name of the structure in the grasshopper's tracheal system that is filled with air to speed up the delivery of respiratory gas during active body movements?

• trachea

• air sacs

• spiracles

• tracheole

Diagram 4 shows the structure of an insect respiratory system. What occurs at J during the gas exchange in the insects?

• Gases diffuse across tracheole into the muscles

• Gases diffuse in the fluid at the tip of tracheole

• Gases dissolve into the fluid and diffuse across the tracheole

• Gases diffuse across the tracheole through active transport

During exhalation, abdominal muscles of insects

• contract

• relax

What is Z?

• trachea

• spiracle

• muscle

• tracheole

Which of the following is true about the structural adaptation of the tracheoles in insects for gaseous exchange

• the small number of tracheoles provide large surface area

• the tracheoles are far to each body cell

• the tracheoles have thick permeable wall

• gaseous exchange takes place directly from the tracheoles into the cell

during inhalation...

• air pressure in the trachea decrease

• air pressure in the trachea increase

• abdominal muscle will contract

What is structure X?

• tracheole

• spiracles

• air sacs

• antenna

What are the respiratory structures of human and insects?

• Respiratory structure of human: Lungs

  Respiratory structure of insects: Tracheoles

• Respiratory structure of human: Lungs

  Respiratory structure of insects: Trachea

• Respiratory structure of human: Alveolus

  Respiratory structure of insects: Tracheoles

• Respiratory structure of human: Alveolus

  Respiratory structure of insects: Trachea

Trachea branches out to form finer tubes called..

• spiracle

• tracheole

• air sacs

What is the function of spiracles in the insect respiratory system?

• They help in the exchange of gases

• They transport oxygen to the muscles

• They store excess carbon dioxide

• They regulate body temperature