NEET BIOLOGY

Detailed explanation-1: -Additional Information:-Secretory tissues in plants are of two types: Glandular tissues which consist of glands and trichomes; and laticiferous tissues which consist of ducts and laticifers.

Detailed explanation-2: -The tissues that are concerned with the secretion of gums, resins, volatile oils, nectar latex, and other substances in plants are called secretory tissues. These tissues are classified as either laticiferous tissues or glandular tissues.

Detailed explanation-3: -In vascular plants, internal secretory structures, such as resin ducts and laticifers, are usually found in conjunction with vascular bundles, whereas subepidermal secretory cavities and epidermal glandular trichomes generally have more complex tissue distribution patterns.

Detailed explanation-4: -Examples include sweat glands, gastric glands, intestinal crypts, and uterine glands. A compound gland has a branching duct. Salivary glands and pancreas are familiar examples. Compound glands are typically fairly bulky and contain very many individual secretory units (acini or tubules).