| A | B |
|---|
| strobilus | compact cluster that protects reproductive structures |
| prothallus | gametophyte of a lycophyte |
| vascular tissue | tussues that transport materials from one part of a plant to another |
| xylem | issue made up of a series of dead tubular cells that transport water and dissolved minerals upward from roots to leaves |
| phloem | tubular cells that are still living, trasports sugars from the leaves to all parts of hte plant |
| rhizome | thick underground stem |
| frond | leaves of a fern |
| sorus | clusters of sporangia |
| gymnosperm | vascular plants that produce seeds on the scales of woody strobili |
| cone | woody strobili |
| microspore | produced in male cone and give rise to the male gametophyte, eventually developing into pollen grain |
| megaspore | produced in the female cone and give rise to the female gametophyte |
| embryo | an organism at an early stage of growth and development |
| cotyledon | food-storage organs of a plant embryo that become the plant's first leaves |
| pollen grain | includes sperm cells, nutrients and a protective outer covering |
| ovule | contains a megaspore cell, one or two layers of tissue, and a protective covering |
| evergreen plant | retain their leaves all year |
| deciduous plant | lose all their leaves at the same time |
| tracheid | composed of thick-walled, nonliving cells sometimes referred to as wood |
