Biology - Structural Organisation in Animals Question with Solution | TestHub

The palms of the hands and soles of the feet have a high concentration of eccrine sweat glands. Excessive wetness of the palms is caused by the overactivity or abundance of these sweat glands, a condition often related to hyperhidrosis.

Sebaceous glands secrete sebum (oil) and are absent on the palms and soles. Ceruminous glands are modified sweat glands located in the ear canal that produce earwax. Mucus glands secrete mucus and are found in the mucous membranes of the respiratory and digestive tracts.

Answer: Abundant sweat glands in the skin.