Vascular seed plants Flashcards

(36 cards)

1
Q

Types of vascular seed plants

A

Angio and gymnosperms

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2
Q

Gymnosperm

A

Naked seed plants

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3
Q

Angiosperm

A

nonflowering plants

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4
Q

Two types of angiosperm

A

monocot and dicot

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5
Q

Vascular seed plants dominant generation

A

Sporophyte

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6
Q

Describe vascular seedless gametophyte

A

Reduced/microscopic, dependent on sporophyte

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7
Q

Sporousness of vascular seed plants

A

Heterosporous

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8
Q

What does the microspore in vascular seed produce

A

pollen grain

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9
Q

What does megaspore in vascular seed produce

A

Embryo sac

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10
Q

Where is pollen grain produced

A

Microsporangia of anthers

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11
Q

What are the components of the pollen grain

A

generative cell and tube cell

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12
Q

Components of ovule

A

Megasporocyte (2n) megasporangium (2n) = nucellus, integuments (2n)

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13
Q

Seed components

A

Sporophyte embryo, protective coat, food supply from endosperm

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14
Q

What component of xylem does gymnosperm have

A

tracheids

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15
Q

What component of xylem does angiosperm have

A

Tracheids and vessel elements

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16
Q

Derived traits of seed plants

A

Heterospory, seeds, pollen grains, ovules

17
Q

What is the only gymnosperm group with vessel elemts

18
Q

Phloem in gymno

19
Q

phloem in angio

A

sieve tube elements and companion cells

20
Q

what do gymnos lack in terms of leafs flowers, petals, etc

A

lacks sepals and petals

21
Q

Ovule in gymno

22
Q

ovule in angio

A

protected by ovary

23
Q

reproductive structure in gymno

24
Q

reproductive structure in angio

A

bisexual or unisexual

25
fertilization type of gymno
single
26
fertilization type of angio
double
27
does angio have archegonia
no bc it's primitive
28
double fertilization
1 sperm cell fertilizes egg to give rise to zygote and the other sperm cell fertilizes either polar or central cells to give rise to endosperm
29
ploidy of endosperm in gymno
haploid
30
when does endosperm develop in gymno
prior to fertilization from archegonia
31
when does endosperm develop in angio
after fertilization
32
ploidy of angio endosperm
triploid
33
component and ploidy of embryo sac
n/haploid, 1 egg cell, 2 synergids, 3 antipodal cells, 2 polar nuclei
34
components of ovule
megasporangium (nucellus), haploid megaspore, integuments
35
how many integuments does gymno have
1
36
how many integuments does angio have
2