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Biology - 6th Year > Reproduction (Plant) > Flashcards

Reproduction (Plant) Flashcards

1
Q

Female part of plant

A

Carpel

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2
Q

3 parts of the carpel

A

Stigma style ovary

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3
Q

Make sort of plant

A

Stamen

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4
Q

Parts in stamen

A

Anther

Filament

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5
Q

What does sexual repro of flowering plant involve

A

Fusion of 2 game yes to produce a diploid zygote

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6
Q

Gametes

A

Haploid celle capable of fusion

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7
Q

Agrémenté

A

Produces pollen grains

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8
Q

Another

A

Jokes pollen save and produces pollen grain

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9
Q

Filament

A

Talk like structure and supports the anther

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10
Q

Carpel

A

Develops the embryo sac

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11
Q

Stigma

A

Pollen lands on it after pollination and it grows into a tube

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12
Q

Style

A

Tube connecting stigma to ovary

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13
Q

Ovary

A

Develops the embryo sac

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14
Q

Sepal

A

Protection

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15
Q

Petals

A

Attract insects for pollination

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16
Q

Filament supplies

A

Nutrients to the anther

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17
Q

Where does the male gamete travel down

A

The style to fuse with the female gamete

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18
Q

Ovary contains

A

Ovules

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19
Q

How many chambers does the anther have

A

4

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20
Q

What are the chambers on the anther called

A

Pollen sac

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21
Q

Tapetum

A

Inside fiberous layer in pollen sac

Store food - supplies energy for cell division

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22
Q

Micro mother cells

A

Located in pollen sac
Diploid (2n)
Divide by meosis to produce a group of 4 haploid cells (tetras)

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23
Q

Tetrad

A

4 haploid cells

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24
Q

What does the tetrad break up into

A

4 seperate haploid pollen grains

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25
Q

What are the pollen grain nucleus divided by

A

Mitosis

Produce two haploid nuclei

26
Q

Name the two pollen grain nuclei after mitosis

A

Tube nucleus

Generative nucleus

27
Q

What the does generative nucleus divide again by mitosis to form

A

2 male gametes

28
Q

Exile

A

Thick outer wall of pollen grain

29
Q

Intime

A

Thin inner coat of pollen grain

30
Q

Name of walls in ovule

A

Integumentary

31
Q

Small opening in which pollen grain can enter ovule

A

Micropyle

32
Q

What provides nutrients for growth in the ovule

A

Nucellus

33
Q

Name the remains gametes at the end of the Embryo sac development

A

2 form polar nuclei

Egg (female gamete)

34
Q

Pollination

A

Transfer of pollen from the anther to the stigma of a flower of the same species

35
Q

Methods of pollination

A

Animal

Wind

36
Q

Chemotropism

A

When tube nucleus moves towards chemicals released from the ovule

37
Q

Where does the male gamete enter the embryo sac

A

Micropyle

38
Q

When does double fertilization take place

A

Generative nucleus divides by mitosis
Moves down the pollen tube
2 haploid gametes are produced
Make gametes enter the embryo sac

39
Q

Double fertilization

A

1 male gamete fuses with egg nucleus to form a diploid zygote (embryo sac)

1 make gamete fuses with 2 polar nuclei to form a triploid endosperm nucleus (food store)

40
Q

What does an embryo consist of

A

Plumule
Radicle
Cotyledons

41
Q

Endosperm role in seed formation

A

Food store for developing embryo

42
Q

Ovule becomes

A

Seed

43
Q

Ovary becomes

A

Fruit

44
Q

Functions of fruit

A

Protect the seed

Seed dispersal

45
Q

Dispersal

A

Transfer or seeds AWAY from the parent plant

46
Q

Types or dispersal

A

Wind water animal self

47
Q

Eg of wind dispersal

A

Sanderlings produce a riot with a parachute device

48
Q

Reasons for dormancy

A

Embryo too tough to let the embryo through

Lack of growth regulators

49
Q

Advantages of seed dormancy

A

Plants avoid harsh winter conditions

Helps the survival of the species

50
Q

Why is dormancy useful to human in agriculture and horticulture practices

A

Knowing the right environment to store seeds

50
Q

Germination

A

Regrette if an embryo after a period of dormancy (suitable environment)

51
Q

Factors needed for germination

A

Water
Oxygen
Suitable temp

52
Q

What break down food store

A

Enzymes (proteins)

53
Q

Cotyledon under ground is

A

Hypogeal germination

54
Q

Cotyledon above ground

A

Epigeal germination

55
Q

Cotyledon

A

Seed leave for storage

56
Q

Seed

A

Fertilizer ovule

57
Q

Another word for asexual reproduction

A

Vegetated propaganda

58
Q

Natural method of asexual rep

A

Runners

59
Q

Artificial method of asexual rep

A

Cuttings

60
Q

Micro propagation

A

Cells removed from a plant and grown in a special nutrient sterile medium outside the organism

61
Q

Clones

A

No variation

Biology - 6th Year (21 decks)

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