Q.
The secretions of endocrine glands are released directly
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Structural Organisation in Animals
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Solution:
On the basis of the mode of pouring of secretion, gland
are divided into - (a) exocrine, and (b) endocrine glands.
Exocrine glands secrete mucus, saliva, oil, digestive
enzymes and other cell products. These products are
released through ducts or tubes. In contrast, endocrine
glands do not have ducts. Their products called hormones
are secreted directly into the fluid bathing the gland.