Ferns and Horsetails Flashcards

1
Q

Bryophytes

A

height limited by lack of vascular tissues
Flagellated sperm usually in moist environments
Gametophytes are the dominant generation

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2
Q

Seedless Land Plants

A

vascular tissues allow for larger, taller plants
Flagellated sperm and are usually restricted to moist environments
Sporophytes are the dominant generation

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3
Q

Fern gametophytes

A

Hermaphroditic

A few mm in size

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4
Q

What do vascular tissues do

A

facilitates the transport of fluids (and hence nutrients) through the plant

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5
Q

Xylem

A

in vascular plants

conducts most of the water and minerals and includes dead cells called tracheids

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6
Q

Phloem

A

in vascular plants

consists of living cells and distributes sugars, amino acids, and other organic products

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7
Q

lignin

A

strengthens water-conducting cells and provides structural support

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8
Q

Roots

A

organs that anchor vascular plants

enable vascular plants to absorb water and nutrients from the soil

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9
Q

Leaves

A

organs that increase the surface area of vascular plants, thereby capturing more solar energy that is used for photosynthesis

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10
Q

Microphylls

A

leaves with a single vein

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11
Q

Megaphylls

A

leaves with a highly branched vascular system

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12
Q

True roots include

A

Tap roots

Tuberous roots

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13
Q

Tap roots

A

large vertically growing root

carrots, radish, parsnips

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14
Q

Tuberous roots

A

modified lateral roots for storage

sweet potatoes, yam

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15
Q

Modified stems

A

corm
rhizomes
Tuber

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16
Q

One more kind of root

17
Q

Sporophylls

A

modified leaves with sporangia

18
Q

Sori

A

clusters of sporangia on the undersides of sporophylls

19
Q

Strobili

A

cone-like structures formed from groups of sporophylls

20
Q

homosporous

A

producing one type of spore that develops into a bisexual (hermaphroditic) gametophyte

21
Q

Most seedless vascular plants are

A

homosporous

22
Q

All seed plants and some seedless vascular plants are

A

heterosporous

23
Q

heterosporous species produces

A

megaspores and microspores

24
Q

megaspores

A

give rise to female gametophytes

25
microspores
give rise to male gametophytes
26
Phylum Lycophyta
includes club mosses, spike mosses, and quillworts
27
Phylum Pterophyta
includes ferns, horsetails, and whisk ferns and their relatives
28
a more recent name for Pterophyta
Monilophyta
29
Lycophytes
abundant in tropics lack seeds superficially resemble true mosses Sporophyte dominant
30
Pterophytes
Common ancestor gave rise to whisk ferns and horsetails all form antheridia and archegonia all require free water for flagellated sperm
31
What is the second largest plant phyla after the angiosperms
ferns
32
Ferns
``` 12,000 species Relatively little economic impact Invasive species Limited food source Horticulture Toxic waste removal ```
33
Horsetails
Found on all continents except Asia and Australia all are homosporous diverse in carboniferous limited economic importance