AP BIOLOGY

Detailed explanation-1: -Gymnosperms. Gymnosperms are also called Naked seeds because their seeds are open to the air without any Covering and are kind of naked which makes the name so. They have no flowers or Fruits. One of the major Groups of this category is Conifers.

Detailed explanation-2: -Conifers are woody plants that produce naked seeds on a cone. They belong to the group of angiosperms. They belong to the division Pinophyta under gymnosperms. Seeds are covered by fruits.

Detailed explanation-3: -Gymnosperms are seed-producing plants but they do not bear flowers. Phanerogams consist of both angiosperms and gymnosperms.

Detailed explanation-4: -The phloem of flowering plants contains sieve tubes with companion cells while the phloem of conifers does not contain sieve tubes and companion cells. Hence, this is also a difference between flowering plants and conifers.

Detailed explanation-5: -Gymnosperms are plants that have seeds but no flowers. The seeds of these plants are on cones or in cups. Most gymnosperms are evergreen. Gymnosperms include conifers, cycads and the ginkgo.