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Life Science > Chapter 9 > Flashcards

Chapter 9 Flashcards

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Biology 101 flashcards
1
Q

What is a flower?

A

Special plant part, concerned with reproduction in flowering plants.

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2
Q

What is the function of the flower stalk?

A

Connects flower to stem

Carries nutrients to flower

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3
Q

What is the function of the receptacle?

A

Top thickened part of flower
Bares flower
Where parts attach

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4
Q

What is the function of the sepals?

A

Outer parts that enclose and protects developing bud

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5
Q

Ou of what does the carpel consist?

A

Stigma
Style
Ovary
Ovule

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6
Q

What is the function of the stigma?

A

Receptive tip of style pollen attach to during pollination

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7
Q

What is the function of the style?

A

Joins ovary to stigma
Supports stigma so that it is exposed to pollination agents
Pollen tube grow through stigma

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8
Q

What is the function of the ovary?

A

After fertilization, becomes fruit

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9
Q

What is the function of the ovule?

A

Contains female gametes

After fertilization becomes seed

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10
Q

What is the function of the female gamete?

A

Haploid female sex cell fuse with male gamete during fertilization to form diploid zygote

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11
Q

Out of what parts does the stamen consist?

A

Anther
Filament
Pollen
Pollen graines

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12
Q

What is the function of the anther?

A

Contains pollen sacs to produce pollen grains

Where male gametes in flower are formed

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13
Q

What is the function of the filament?

A

Carries, holds anther so that it is exposed to pollination agents

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14
Q

What is the function of the pollen sacs?

A

Chambers, cavities located in anther where pollen grains are produced

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15
Q

What are pollen grains?

A

Fine to course powdery substance comprising pollen grains in which male gametes are produced

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16
Q

What is the function of the petals?

A

Attract pollinaters

17
Q

What is the function of the nectary?

A

Produce nectar

18
Q

What is the function of the nectar?

A

Sweet sugary substance.

Insects eat it as food, bees make into honey and pollinate flower

19
Q

What is pollination?

A

Transfer of pollen grains form anther to receptive stigma

20
Q

What is seed dispersal?

A

Spreading seeds/fruit as far as possible

21
Q

Why is seed dispersal important?

A

Offspring do not compete for water, light, nutrients
Reduced risk of soil depletion
New habitats
Whole community not wipe out if natural disaster, seeds protected

22
Q

What happens after fertilization?

A

Ovule stores nutrients, become seeds
Ovary - fruit
Seeds dispersed
Embryo plant grow form seed

Life Science (14 decks)

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