Which one of the following is one of the paths followed by air/O₂ during respiration

⇦

⇨

Which one of the following is one of the paths followed by air/O₂ during respiration in an adult male Periplaneta americana as it enters the animal body?

Options

(a) Hypopharynx, mouth, pharynx, trachea, tissues
(b) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
(c) Mouth, bronchial tube, trachea, oxygen enters cells
(d) Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells

Correct Answer:

Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells

Explanation:

The no. of spiracles in cockroach is 10-pairs (2-pairs in thoracic and 8-pairs in abdominal region). The thoracic pairs of spiracles are present on pleuron between prothorax – mesothorax and metathorax. Each spiracle open into a chamber called atrium. After atrium the tracheal tube ramifies into fine branches of tracheae, and then tracheoles.

Related Questions:

1. Aquatic reptiles are
2. Commonly used vectors for human genome sequencing are:
3. Biradial symmetry and lack of cnidoblasts are the characteristics of
4. Which of the following regions of our country are known for their rich biodiversity?
5. The correct sequence of spermatogenetic stages leading to the formation of sperms

Topics: Human Physiology Systems (35)
Subject: Biology (4253)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends