15. Match the word and its explanation:

1.gymnosperms

a. most of these plants are evergreen trees and shrubs that bear naked seeds in cones. Examples of modern-day plants of this type include pine, fir, larch, and spruce trees. Mesozoic Era plants of this type included redwoods, yews, pines, the monkey puzzle tree (Araucaria), cypress, and Pseudofrenelopsis. Towards the end of the Mesozoic, flowering plants flourished and began to overtake these plants as the dominant flora.

2.seeds

b. it is the process in which the male's pollen fertilizes the female's ovule and creates a seed; the pollen is transferred from the male's anther to the female's stigma. It is effected by the wind, insects, hummingbirds, etc.

3.angiosperms

c. it is the reproductive fruiting structure of many tracheophytes. It is a group of scales that are joined to a central stalk; the seeds are borne on the surface of the these scales.This scale contains either ovules or spores (depending on whether it is female or male).

4.conifer

d. these are seed-bearing plants that don't produce flowers. These plants release pollen into the air to the female ovule, causing fertilization. Their seeds develop without a protective covering. The earliest plants of this type were seed ferns from the Devonian period (408-360 million years ago). Some examples of these plants are conifers (like pines, redwoods, and fir), gingkos, seed ferns, cycadeoids, and cycads. These plants were very important to plant-eating dinosaurs

5.cone

e. these are flowering plants. They produce seeds enclosed in fruit (an ovary). They are the dominant type of plant today; there are over 250,000 species. Their flowers are used in reproduction. They evolved about 145 million years ago, during the late Jurassic period, and were eaten by dinosaurs. They became the dominant land plants about 100 million years ago (edging out conifers, a type of gymnosperm). They are divided into the monocots (like corn) and dicots (like beans)

6. needle

f. it is the female reproductive cell of flowering plants and cone-bearing plants. After the it is fertilized by the male pollen, it becomes a seed.

7.pollination

g. it is the reproductive unit of some plants.

8.ovule

h. it is a female reproductive organ in plants that produces ovules.

9. ovary

i. it is a long, thin, pointed, needle-shaped leaf, like that of the pine. The word acicular is sometimes used to describe these.