| A | B |
|---|
| alternation of generation | The two-stage life cycle of plants |
| cell wall | A tough wall surrounding the cell membrane in plant cells that give these cells their rigidity. |
| chlorophyll | A green pigment present in the chloroplasts of plant cells that is active in photosynthesis. |
| chloroplast | An organelle of plant cells that contain chlorophyll where photosynthesis takes place. |
| gamete | A sex cell, either sperm or egg. |
| gametophyte | The stage in the reproduction cycle of plants that produces the gametes. |
| nonvascular plant | A plant that lacks the tubelike cells that make vascular tissue. |
| spore | An asexual reproductive cell produced by the sporophyte generation of the plant life cycle. |
| sporophyte | The stage in the reproductive cycle of plants that produces the spores. |
| vascular plant | A plant that has special tubelike cells that make up vascular tissue. |
| bryophyte | A plant division into which nonvascular plants are classified. |
| capsule | A small spore containing structure attached to the slender stalk of a moss plant. |
| diffusion | The passive, back-and-forth movement of molecules through a membrane from an area of greater concentration to an area of lesser concentration. |
| liverwort | A type of bryophyte that has tough, tongue-shaped leaves. |
| moss | A type of bryophyte consisting of a cluster of tiny leaves growing from a small stem. |
| peat moss | A moss, also called sphagnum moss, used as a soil conditioner. |
| rhizoid | A rootlike structure of bryophytes through which they absorb water and minerals. |
| frond | The leaf of a fern. |
| rhizome | A modified stem that grows underground in fern and horsetail plants. |
| vascular tissue | Plant tissue that is able to absorb water and nutrients from its surroundings and transport them to where they are needed in the plant. |
