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Plant Biology > Vascular seed plants > Flashcards

Vascular seed plants Flashcards

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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

A

gnetophyta

18
Q

Phloem in gymno

A

sieve cells

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

A

exposed

22
Q

ovule in angio

A

protected by ovary

23
Q

reproductive structure in gymno

A

unisexual

24
Q

reproductive structure in angio

A

bisexual or unisexual

25
Q

fertilization type of gymno

A

single

26
Q

fertilization type of angio

A

double

27
Q

does angio have archegonia

A

no bc it’s primitive

28
Q

double fertilization

A

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
Q

ploidy of endosperm in gymno

A

haploid

30
Q

when does endosperm develop in gymno

A

prior to fertilization from archegonia

31
Q

when does endosperm develop in angio

A

after fertilization

32
Q

ploidy of angio endosperm

A

triploid

33
Q

component and ploidy of embryo sac

A

n/haploid, 1 egg cell, 2 synergids, 3 antipodal cells, 2 polar nuclei

34
Q

components of ovule

A

megasporangium (nucellus), haploid megaspore, integuments

35
Q

how many integuments does gymno have

A

1

36
Q

how many integuments does angio have

A

2

Plant Biology (6 decks)

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