Gymnosperms flashcards

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Gymnosperms are _____ producing land plants seed producing
Seeds are composed of three parts _____ , ____ and ____ Sporophytes embryo, stored food, Protective seed coat.
what is the function of seeds? They are used to store food and protect the embryo
When the seed germinates the stored food becomes a source of _________ nutrition for the growing seedling.
Gymnosperms are heterosporous, what does this mean? They produce, microspores and megaspores, that eventually produce male and female gametophytes.
what are Microspores? They are small spores that produce pollen grains that are the male gametophytes.
what are Megaspores? They develop within the ovule and grow into a female gametophyte. After fertilization, it develops to form seeds.
Gymnosperms produce perennial plants, what are perennial plants? they are plants that live more that one growth season
Some of the plants that gymnosperms produce are evergreen, what does evergreen means? it means that they have their leaves all through the fall
Gymnosperms is composed of 4 phyla with living members, name them The 4 phyla include, Phylum Coniferophyta (the conifers), Phylum Gnetophyta (the gnetophytes) ,Phylum Cycadophyta (the cycads) ,Phylum Ginkgophyta (Ginkgo)
Conifers means ______ cone-bearing.
Conifers include ______ pines, cedars, cypress, redwoods etc
Most conifers are ________ monoecious, softwoods and evergreen
True or False: Confers have separate male and female parts True
What are some uses of conifers? They are used as sources of timber, paper, resin, and cancer drug taxol etc
Cycads are ______ dioecious
True or False: Cycads have their male and female parts are separate True
They have a life cycle similar to ______ pine
Ginkgo belong to _____ group the monophyletic group
Ginkgo are deciduous plants, what does this mean? it means they lose their leaves
They have flagellated sperms that are similar to ______ cycads
Gnetopytes that include 3 genera include _____, ____ and _____ Gnetum, Ephredra, Welwitschia
where do gnetum grow? They grow in the tropics
where are welwitschia found They are found in deserts of southwestern Africa

Gymnosperms are _____ producing land plants

Seeds are composed of three parts _____ , ____ and ____

what is the function of seeds?

When the seed germinates the stored food becomes a source of _________

Gymnosperms are heterosporous, what does this mean?

what are Microspores?

what are Megaspores?

Gymnosperms produce perennial plants, what are perennial plants?

Some of the plants that gymnosperms produce are evergreen, what does evergreen means?

Gymnosperms is composed of 4 phyla with living members, name them

Conifers means ______

Conifers include ______

Most conifers are ________

True or False: Confers have separate male and female parts

What are some uses of conifers?

Cycads are ______

True or False: Cycads have their male and female parts are separate

They have a life cycle similar to ______

Ginkgo belong to _____ group

Ginkgo are deciduous plants, what does this mean?

They have flagellated sperms that are similar to ______

Gnetopytes that include 3 genera include _____, ____ and _____

where do gnetum grow?

where are welwitschia found

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