Chapter 30 - Plant Diversity: The Evolution Of Seed Plants Flashcards
Characteristics of microspores?
Pollen grain.
Facilitate pollination eliminating the need for swimming sperm.
What adaptations did seed plants make?
Reduced gametophyte.
Heterosporus.
Ovule and egg production.
Pollen and sperm production.
Characteristics of megaspores?
Ovary houses the mega sporangium.
Fertilization produces the zygote.
Zygote develops into embryo.
Characteristics of gymnosperms?
Better suited to drier conditions.
Most are woody.
No water needed for production.
Produces by wind pollination.
Characteristic of phylum Cycadophyta?
Palm like in appearance.
Dioecious.
Flagellated sperm.
Characteristics of Phylum Ginkgophyta?
Ginkgo or maidenhair tree. One living species. Fan shaped leaves. Dichotomous venations. Flower like strobili. Dioecious. Planted as ornaments.
Characteristics of Phylum Gnetophyta?
Vessels in xylem are unique.
Dioecious.
Most closely related to flowering plants.
Characteristics of Phylum Coniferophyta?
Pines, firs, spruces, cedars, junipers, redwoods.
Monoecious.
Needle like leaves.
Mycorrhizal fungi.
Characteristics of Phylum Anthophyta?
Flowering plants.
Carpels.
Parts of the flower?
Sepals - calyx.
Petals - corolla.
Stamens - anther and filament.
Carpel - stigma, style, and ovary.
Fruit definition.
Consists of a mature ovary but can also include other flower parts.
Characteristics of fruits?
Protect seeds and aid in their dispersal.
Seeds can be carried by wind, water, or animals to new locations.
Characteristics of megasporogenesis?
Megaspores mother cell.
The female gametophyte.
Characteristics of microsporogenesis.
Microspores mother cells.
The male gametophyte.
Monocots definition.
One cotyledon.
