DENDROLOGY

Detailed explanation-1: -Gymnosperms are flowerless plants containing cones and seeds. The word ‘gymnosperm’ means “naked seed” since the seeds of gymnosperm are not contained in an ovary. They are instead exposed to leaf-like structures known as bracts. Gymnosperms include cycads, conifers, gnetophytes, and ginkgoes.

Detailed explanation-2: -Gymnosperms. These seed plants do not have flowers or fruit-their seeds are held in cones.

Detailed explanation-3: -Gymnosperms are a smaller, more ancient group, and it consists of plants that produce “naked seeds” (seeds that are not protected by a fruit). There are more than 1, 000 species of gymnosperms still found on Earth. The key difference between angiosperms and gymnosperms is how their seeds are developed.

Detailed explanation-4: -Pine trees are conifers (coniferous = cone bearing) and carry both male and female sporophylls on the same mature sporophyte. Therefore, they are monoecious plants. Like all gymnosperms, pines are heterosporous and generate two different types of spores (male microspores and female megaspores).