Gymnosperms Flashcards by Jerick Galindez | Brainscape

Q

Gymnosperms

Gymno- meaning

-sperm meaning

A

Naked

Seeds

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Q

Gymnosperms

Do they bear fruit?

A

No

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Q

Gymnosperms

Land adaptations? (3)

A

All from previous

Sperm dont need water to swim

Seeds

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Q

Gymnosperms

Land limitation?

A

Depend on wind to move sperm-producing structures to the eggs

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Q

Gymnosperms

What are the 3 parts of a seed

A

Sporophyte embryo

Nutritive tissues

Seed coat

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Q

Gymnosperms

What are the 4 phyla?

A

Pinophyta

Ginkophyta

Cycadophyta

Gnetophyta

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Q

Gymnosperms: Pinophyta

General names (3)

A

Cedars

Spruces

Redwoods

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Q

Gymnosperms: Pinophyta

Coniferous means?

A

Cone (strobila) bearing

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Q

Gymnosperms: Pinophyta

How many species?

A

approx 600

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Q

Gymnosperms: Pinophyta

Leaves =

A

Needles

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Q

Gymnosperms: Pinophyta

Fassicle =

A

A bunch of needles 1-8

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Q

Gymnosperms: Pinophyta

Hypodermis purpose?

A

Water retention

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Q

Gymnosperms: Pinophyta

Sclerenchyma purpose?

A

Support

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Q

Gymnosperms: Pinophyta

Stoma location and purpose?

A

Found in the depressions in epidermis

Water retention

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Q

Gymnosperms: Pinophyta

Vascular tissue found in __

A

Bundles

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Q

Gymnosperms: Pinophyta

Mesophyll is not ___

A

Differentiated

Q

Gymnosperms: Pinophyta

Resin canal purpose?

A

Chemical defense vs fungi and insects

Q

Gymnosperms: Pinophyta

Each megasporophyll has _ ovules

A

2

Q

Gymnosperms: Pinophyta

Each ovule has a __

A

Megasporangium

Q

Gymnosperms: Pinophyta

What 2 structures make up a megasporangium?

A

Nucellus

Megasporocyte

Q

Gymnosperms: Pinophyta

What is a nucellus?

A

Tissue where embryo grows up

Like a placenta

Q

Gymnosperms: Pinophyta

Megasporocyte creates how many megaspores?

How many live/die

A

4

3 die, 1 lives and becomes mature female gametophyte

Q

Gymnosperms: Pinophyta

Human uses

3 edible parts of pinophyta?

A

Phloem

Vascular cambium

Seeds

Q

Gymnosperms: Pinophyta

Human uses general (7)

A

Wood

Pharmaceuticals

Paper

Dyes

Ornamental

Resin

Turpintine

Q

Gymnosperms: Ginkophyta

General name

A

Ginko trees

Q

Gymnosperms: Ginkophyta

How many species?

A

1

Q

Gymnosperms: Ginkophyta

Extinct in the ___

A

Wild

Q

Gymnosperms: Ginkophyta

Considered extinct until ___

Found in cultivation where (3)

A

1690

Palaces

Temples

Monasteries

Q

Gymnosperms: Ginkophyta

Lifecycle

Similar to __ except ___

A

Similar to pinophyta except dioecious

Q

Gymnosperms: Ginkophyta

Human uses (2)

A

Ornamental

Herbal remedies

Q

Gymnosperms: Cycadophyta

General name

A

Cycad

Q

Gymnosperms: Cycadophyta

How many species

A

approx 300

Q

Gymnosperms: Cycadophyta

Lifecycle is similar to ___ except ___

A

pinophyta

dioecious

Q

Gymnosperms: Cycadophyta

Human use (1)

A

Ornamental

Q

Gymnosperms: Gnetophyta

How many species

A

approx 70

Q

Gymnosperms: Gnetophyta

Synapomorphy?

A

Vessel elements

Other gymnosperms only have tracheids

Q

Gymnosperms: Gnetophyta

General name

A

Ephedra

Q

Gymnosperms: Gnetophyta

Human uses (2)

A

Pharmeceuticals: ephedrine

Herbal teas