Grade 3 science quiz bee | PPT - Free Printable

The question asks: "Which of the following is a sense organ?"

Let's examine each option:

A. Tongue
- The tongue contains taste buds, which are sensory receptors responsible for detecting taste (sweet, sour, salty, bitter, umami).
- Therefore, the tongue is a sense organ related to the sense of taste.

B. Hair
- Hair itself does not have sensory functions. However, hair follicles are associated with touch receptors that can detect movement or pressure on the skin. But hair alone is not a sense organ.

C. Bone
- Bones provide structural support and protection but do not directly detect external stimuli. They are not sense organs.

D. Foot
- While the foot contains sensory receptors (for touch, pressure, temperature, etc.), it is a body part, not a specific sense organ. It includes various tissues, but the foot as a whole is not classified as a sense organ.

✔ Correct Answer: A. tongue

Explanation:
The tongue is a sense organ because it contains specialized sensory structures (taste buds) that detect chemical stimuli in food, enabling the sense of taste. This makes it a true sense organ.

✔ Answer: A. tongue