Lab Test 2: Nonvascular and Seedless Vascular Plants

These flashcards cover key vocabulary and definitions related to the study of nonvascular and seedless vascular plants as well as seed plants, including their reproduction and anatomy.

Alternation of generations

A biological process where organisms alternate between a haploid gametophyte stage and a diploid sporophyte stage.

Antheridium

The male reproductive structure in nonvascular and seedless vascular plants that produces sperm.

Archegonium

The female reproductive structure in nonvascular and seedless vascular plants that produces eggs.

Sporangium

A structure in which spores are produced in plants.

Sorus

A cluster of sporangia on the underside of a fern frond.

Gymnosperm

A type of seed plant that produces seeds that are not enclosed in an ovary.

Angiosperm

A type of seed plant that produces flowers and fruits with seeds enclosed.

Pollen grain

The male gametophyte in seed plants that carries the male gametes.

Ovule

The structure in seed plants that develops into a seed after fertilization.

Dermal tissue

The outer protective layer of a plant.

Xylem

The vascular tissue in plants responsible for the transport of water and minerals from roots to leaves.

Phloem

The vascular tissue in plants responsible for the transport of nutrients and food from leaves to other parts of the plant.

Apical meristem

A region of actively dividing cells at the tips of roots and shoots, responsible for primary growth.

Zone of elongation

The area in a plant root where cells elongate and increase the length of the root.

Stoma

Tiny openings in plant leaves that allow for gas exchange.

Guard cells

Cells surrounding the stoma that control its opening and closing.