Which of the following are not the tastes of the tongue?
1. Sweet
2. Bitter
3. Salty
4. Spicy
5. Umami
6. Sour
7. Pungent

Select the correct answer using the codes given below.

Physiologically, human taste buds identify five primary gustatory modalities: sweet, sour, salty, bitter, and umami (savory). 'Spicy' (4) and 'pungent' (7) are not primary gustatory tastes; rather, they represent pain and heat sensations mediated by thermal receptors and trigeminal nociceptors (irritated by capsaicin). Thus, 4 and 7 are not tastes of the tongue.