EVERYDAY SCIENCE

Detailed explanation-1: -The botanical term “gymnosperm” means “naked seed” in Greek. Gymnosperms include species such as conifers and cycads that do not enclose their seed in fruits.

Detailed explanation-2: -Updated On: 27-06-2022 Gymnosperms are called naked seeded plants due to the absence of ovary wall.

Detailed explanation-3: -cone, also called strobilus, in botany, mass of scales or bracts, usually ovate in shape, containing the reproductive organs of certain nonflowering plants. The cone, a distinguishing feature of pines and other conifers, is also found on all gymnosperms, on some club mosses, and on horsetails.

Detailed explanation-4: -In gymnosperms, a leafy green sporophyte generates cones containing male and female gametophytes; female cones are bigger than male cones and are located higher up in the tree. A male cone contains microsporophylls where male gametophytes ( pollen ) are produced and are later carried by wind to female gametophytes.

Detailed explanation-5: -In most gymnosperms the male pollen cones, called microstrobili, contain reduced leaves called microsporophylls. Microsporangia, or pollen sacs, are borne on the lower surfaces of the microsporophylls. The number of microsporangia may vary from two in many conifers to hundreds in some cycads.