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Flashcards in Lecture 2 Deck (68):
1

What phylum does angiosperm belong to

Anthophyta

2

What are flowering plants called

angiosperms

3

How many species belong to Anthophyta

300,000-450,000

4

What are the two major classes of Anthophyta

monocotyledons and eudicotyledons

5

How many species are in the monocotyledons

90,000 species

6

What are some examples of monocotyledons

grasses, lillies, irises, orchids, and palms

7

How many species are in the eudicotyledons

200,000 species

8

What are some examples of eudicotyledons

trees, shrubs, and some herbs

9

How many flowering parts does a monocot have and how many does a eudicot have

monocot: in threes
eudicot: in fours or fives

10

What type of pollen part does a monocot have and what type does a eudicot have

monocot: monoaperturate
eudicot: triaperturate

11

How many cotyledons does a monocot have and how many does a eudicot have

monocot: one
eudicot: two

12

What is the leaf venation like on a monocot and what is it like on a eudicot

monocot: parallel
eudicot: netlike

13

How are the primary vascular bundles in the stem arranged in a monocot and eudicot

monocot: complex arrangement
eudicot: in a ring

14

Is true secondary growth, with vascular cambium present in a monocot and eudicot

monocot: rare
eudicot: commonly present

15

What is a cotyledon

the first leaf to emerge

16

What are some other flowering plants aside from monocot and eudicots

parasitic plants and myco-heterotrophs

17

How many species of parasitic plants are there

3000 species

18

What is unique about myco-heterotrophs

they have obligate relationships with mycorrhizal fungi and lack chlorophyll

19

What are the specialized organs that parasitic plants have

haustoria, they penetrate tissues of their hosts

20

Which shoot has the sporophyll

the determinate shoot

21

what are sporophylls commonly called

leaves

22

How does the determinate stem differ from the other stems

it stops growing once it bears a flower

23

What classifies a plant as a peduncle

if it has one flower

24

What are the male parts on the flower

the stamen which includes the anther and the filament

25

What are the female parts on the flower

the carpel and that contains the ovary

26

What are inflorescences

aggregation of flowers

27

What is the peduncle

the main flower stalk

28

What is the pedicel

the stem that connects the flower and the main stem

29

What are the sterile appendages on a flower

perianth

30

What are the sepals called

calyx

31

What are the petals called

corolla

32

What are the fertile parts of the flower called

stamen and carpel

33

What are microsporangia

pollen sacs

34

Where is the microsporangia located

in the stamen

35

What does the megasporophyll contain

-ovary
-style
-stigma

36

Where is the megasporophyll located

in the carpel

37

What are whorls

the parts of the flowers

38

How many whorls can a flower have

up to 4 whorls: calyx, corolla, androecium, and gynoecium

39

What is the other name for androecium

stamen

40

What is the other name for gynoecium

carpels

41

What does it mean if the flower is complete

it has all its whorls

42

What does it mean if the flower is incomplete

only has some of its whorls

43

What does it mean if the flower is perfect

contains both carpel and stamen

44

What does it mean if the flower is imperfect

contains only one part, either carpel or stamen

45

What is staminate

just the male parts

46

What is carpellate

just the female parts

47

What does monoecious mean

"one house" has both female and male flowers

48

What does dioecious mean

"two houses" has either the female or male flowers

49

What portion of the ovary does the ovules originate

the placenta

50

How is the ovary position determined

by the whorls around it

51

What are the three terms used to describe the ovaries position

-hypogynous
-perigynous
-epigynous

52

What does hypogynous mean

the ovary is superior to the other parts of the flower

53

What does perigynous mean

all the parts are formed at the same base

54

What does epigynous mean

the ovary is inferior to the other parts of the flower

55

What does regular (actinomorphic) flower symmetry mean

the flower symmetry is radial

56

What does irregular (zygomorphic) flower symmetry mean

the flower symmetry is bilateral

57

What is the general life cycle of a plant

-two generations (sporophyte- diploid) (gametophyte- haploid)
-two processes (meiosis and fertilization)

58

Which is the dominate generation in the plant life cycle

the sporophyte (the flower stage)

59

What is the angiosperm life cycle

-highly reduced gametophyte
-indirect pollination (pollen never comes into contact with ovule)
-after double fertilization (ovule develops into seed, ovary develops into fruit)

60

How many cells mature in a microgametophyte

3

61

How many cells mature in a megagametophyte

7

62

Indirect pollination is unique to what life cycle

angiosperm life cycle

63

What is microsporogenesis and where does it occur

it is the formation of microspores and it occurs in the pollen sacs

64

What is microgametogenesis

-development of microgametophyte within the pollen grain
-mircospore produces large tube cell and a small generative cell
-generative nucleus produces two sperm
-3 cell stage

65

What two processes form the microgametophyte

-microsporogenesis
-microgametogenesis

66

What two processes form the megagametophyte

-megasporogenesis
-megagametogenesis

67

What is megasporogenesis and where is it located

-megaspore formed in nucellus from megasporocyte
-inside ovule

68

What is megagametogenesis

-megaspore develops into 7 celled megagametophyte
-3 mitotic divisions (8 nuclei) (two polar nuclei in central cell, egg apparatus, three antipodals)
-other patterns in some plants