Topic D: Plant Reproduction Flashcards

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1
Q

What is A sexual reproduction?

A

involves a single individual making many copies of itself. parent and offspring are all genetically identical.

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2
Q

What is sexual production?

A

Flowers are the sex organs of flowing plants. many flowers are HERMAPHRODITE.

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3
Q

What are the male parts of the plant?

A

Anther
Stamen
Filament

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4
Q

What are the female parts of the plant?

A

stigma
style
overy

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5
Q

What is the function of the Sepals?

A

Protective leaflets in which the flower develops.

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6
Q

What is the function of the Petals?

A

Colour lines on petals attract insects to the flower.

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7
Q

What is the function of the Anther?

A

Male structure which produces pollen

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8
Q

What is the function of the Filament?

A

Holds the anther near the opening of the flower

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9
Q

What is the function of the Stigma?

A

Region that receives incoming pollen.

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10
Q

What is the function of the Ovary?

A

female structure in which eggs (ova) are made site of fertilization.

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11
Q

What is the function of the Nectary?

A

Found at the base of the filaments, produces nectar to attract insects.

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12
Q

Insect and wind pollinated, position of stamen?

A
  • Insect pollinated , enclosed within flower so that insect must make contact.
  • Wind pollinated, Exposed so that wind can easily blow pollen away.
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13
Q

Insect and wind pollinated, position of stigma?

A
  • Insect pollinated , enclosed within flower so that insect must make contact
  • Wind pollinated, Exposed so that wind can easily blow pollen on the the stigma.
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14
Q

Insect and wind pollinated, Type of stigma?

A
  • Insect pollinated ,sticky, so pollen grains attach from insects.
  • Wind pollinated, feathery, to catch pollen grains blowing in the wind.
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15
Q

Insect and wind pollinated, Size of petals?

A
  • Insect pollinated ,large attracted to insects.

- Wind pollinated, small

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16
Q

Insect and wind pollinated, Color of petals?

A
  • Insect pollinated ,bright to attracted to insects.

- Wind pollinated, not bright

17
Q

Insect and wind pollinated, Scent?

A
  • Insect pollinated ,to attract insects.

- Wind pollinated, Not required.

18
Q

Insect and wind pollinated, Nectaries?

A
  • Insect pollinated ,present to attract insects.

- Wind pollinated, Not required.

19
Q

Insect and wind pollinated, Pollen grains?

A
  • Insect pollinated ,sticky are large, grains to stick to insects bodies.
  • Wind pollinated, small smooth grains to carry in the wind .
20
Q

Insect and wind pollinated, Pollen grains?

A
  • Insect pollinated , small amount needed

- Wind pollinated, lots of pollen produced

21
Q

What happens during fertilization?

A

As a result of pollination, pollen is dropped on the female stigma, here the pollen grain begins to germinate. the stigma produces a surgery solution in which the pollen grains crack open releasing a pollen tube. this tube grows down the style and into the stigma. the pollen passes down the pollen tube and enters the overy and fertilizes an ovule. After fertilization the overy becomes the fruit and the fertilized ovule becomes the seed. the other other parts of the flower wither away as the fruit swells.

22
Q

Ways that plants can produce asexually (natural methods)?

A

By runners, these occur mainly on spider plants. The plant will have the same DNA as the mothering plant.

23
Q

Ways that plants can produce asexually (man made methods)?

A

By cuttings been taken of plants and either placing them in water of soil. the process of osmosis will begin to take place and the plant should then begin to grow roots etc.
This method is very cheap and quick.

24
Q

What is germination?

A

When a seed germinates, water is taken into the seed which activates enzymes. these enzymes digest the food store and provide the molecules + energy for the seed to grow a shoot (pumule) and root (radicle)