Evolution of Seed plants Flashcards

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1
Q

What do seed ferns resembled and how are they different from ferns?

A

Resemble ferns

produced by using SEEDS instead of SPORES

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2
Q

What are the THREE classes of GYMNOSPERMS?

A
  1. Cycads —> palm like plant
  2. Ginkgoes —> only one species left and found during time of dinosaurs
  3. Conifers —> commonly called evergreens and is the most abundant gymnosperm
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3
Q

What do gymnosperms all have?

A

SCALES

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4
Q

What are scales?

A

specialized male and female reproductive structures

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5
Q

How are scales grouped?

A

grouped into CONES

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6
Q

What do male cones produce?

A

produce male gametophytes called POLLEN GRAINS

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7
Q

What do female cones produce?

A

produce female gametophytes called MEGA GAMETOPHYTE or OVULES

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8
Q

What is the seed protected by?

A

SEED COAT

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9
Q

why are the seeds called NAKED SEEDS?

A

because they sit “naked” on the scales

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10
Q

Conifers (cone bearers) are commonly called

A

Evergreens

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11
Q

6 examples of conifers

A
pine
spruce
fir
cedar
sequoia
yew
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12
Q

what are the leaves of conifers called and what do they look like?

A

NEEDLES

long and thin

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13
Q

When do needles fall out? (conifers)

A

lose older needles all year round

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14
Q

What do male cones/pollen cones produce? (conifers)

A

pollen grains

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15
Q

What do female cones/seed cones produce? (conifers)

A

ovules

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16
Q

How do conifer plants reproduce?

A

some produce both male and female cones on the SAME plant and other have SEPARATE male and female plants

17
Q

How is pollen carried

A

by wind, some caught by sticky secretion produced by the scale

18
Q

Angiosperms (flowering plants)

A

commonly called flowering plants

19
Q

how do angiosperms reproduce?

A

sexually through a process that involves pollination

20
Q

how are seeds of angiosperms contained?

A

within protective wall that develops into a structure called a fruit

21
Q

angiosperms have the most widespread of…

A

land plants

22
Q

what are the 2 orders of angiosperms

A
  1. monocotyledonae (monocots)

2. Dicotyledene (dicots)

23
Q

What are 5 examples of monocots?

A
corn
wheat
lilies
palms
grasses
24
Q

What are 7 examples of dicots?

A
roses
clover
oaks
tomatoes
oaks
maples
daisies
25
Q

Monocots have how many number of cotyledons/seed leaves?

A

1 cotyledon

26
Q

Dicots have how many number of cotyledons/seed leaves?

A

2 cotyledons

27
Q

monocots veins are…

A

parallel leaf veins

28
Q

dicots veins are…

A

netlike leaf veins

29
Q

monocots flowers have…

A

floral parts in threes

30
Q

dicots flowers have…

A

floral parts in four or fives

31
Q

vascular bundles in stem of monocots…

A

vascular bundles throughout stem’s ground tissue

32
Q

vascular bundles in stem of dicot…

A

stem’s vascular bundles arranged in a ring

33
Q

vascular bundles in root of monocots…

A

arranged in a ring

34
Q

vascular bundles in root of dicot…

A

roots phloem between areas of xylem

35
Q

stem thickness monocots…

A

DO NOT grow thicker year to year

36
Q

stem thickness dicots…

A

CAN grow thicker from year to year