DENDROLOGY

Detailed explanation-1: -Non flowering plants generally uses spores for reproduction. An example of a non flowering plant is the fern, in which the leaves of the fern contain spores with which they reproduce.

Detailed explanation-2: -Plants such as ferns and mosses are called nonflowering plants and produce spores instead of seeds. There is also another group called the Fungi, that include mushrooms, and these also reproduce by spores.

Detailed explanation-3: -Flowers are the reproductive part of most plants and they produce seeds.

Detailed explanation-4: -Not every plant grows from a seed. Some plants, like ferns and mosses, grow from spores. Other plants use asexual vegetative reproduction and grow new plants from rhizomes or tubers.