What you know about glandular tissues ?

Explanation

Glandular tissue. They are isolated secretory structures which may be unicellular or multicellular.Example -(i) Nectar secreting glands.
(i) Nectar ( or honey) is a sugary substance secreted by nectar gland or nectaries which may be floral ( present in flower) or extra floral ( on vegetative parts).
(ii) Water-secreting structures ( Water stomata or hydathodes) are present along the margins and apices of leaves. The exudation of water through these is called guttation.
(iii) Osmophores. They secrete essential oil.
(iv) Chalk or gland cells secrete salts e.g. Tamarix.