Question

Name the germ layers from which the following tissues or organs are produced.
I. Kidneys
II. Internal ear
III. Trachea

• A. I- Endoderm; II- Ectoderm; III- Mesoderm
• B. I- Endoderm; II- Mesoderm; III- Ectoderm
• C. I- Ectoderm; II- Endoderm; III- Mesoderm
• D. I- Mesoderm; II- Endoderm; III- Ectoderm
• E. I- Mesoderm; II- Ectoderm; III- Endoderm

Answer 1

The correct option is E I- Mesoderm; II- Ectoderm; III- Endoderm

The intermediate mesoderm aggregates between the paraxial and lateral plate of mesoderm and gives rise to kidneys, male genital duct system and part of gonads. The internal ear originates from the otic vesicle, which splits off from the surface ectoderm in the fourth week of gestation. The epithelium and glands of the trachea are derived from endoderm. This makes option E correct answer.