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問題一覧
1
Plants have complex life cycles that include two different stages what are the two different stages
sporophyte and gametophyte
2
What happens during the sporophyte stage
A plant produces the spores that will eventually develop into gametophytes
3
What happens during the gametophyte stage
Male and female gametophyte produce sex cells that will eventually be involved in the process of fertilization which occurs when a sperm cell unites with an egg cell to produce a new organism
4
Would you plants produce sporophytes is that resemble small trees or flowers
Moses and other non-vascular plants
5
What does sporophyte release the grows into a male and female gametophyte
Spores
6
What is zygote
A fertilized egg
7
Which structures does the Fern gametophyte have that produces sex cells
Male and female structures
8
What happens when a sperm cell fertilizes an egg cell
A new Sporophyte begins to develop
9
What are the two other types of vascular plant
Gymnosperms and angiosperms
10
Where do gymnosperm and angiosperm gametophytes actually develop
Inside structures within a larger sporophyte
11
Where does gymnosperm Develop
Inside cones
12
Where does angiosperm develop
They develop inside the flowers
13
What does the male gametophyte in these types of plants called
pollen
14
What does Pollen contain
pollen contains cells that will mature into sperm cells
15
For reproduction to occur pollen must travel in to which gametophyte so it can fertilize egg cells.
Female gametophyte
16
what is pollination
The process of transferring Pollen from male reproductive structures to female reproductive structures in plants
17
When must Pollination occrue in plants
before fertilization can occur
18
Sexual production is what way that plants reproduce
dominant
19
How can a single plant quickly spread
producing Many exact copies of itself
20
what do male cones hold
pollen
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what do female cones have
ovule
22
what is cones
the reproductive structures of gymnosperms.
23
what is ovule
the structure holding the egg
24
what does a female make outside a cone
sticky substance needed for pollination
25
What is light enough to be carried by the wind
pollen from the male cone
26
When the winds blows pollen may land on what
on the sticky female cone
27
When the pollen lands on the sticky female cone what might happen
The egg may become fertilized
28
the seeds of gymnosperm are what
are naked ( unprotected )
29
When the female cone matures what happens
The scales open exposing the seeds
30
What happens to the exposed seeds after the scales open
they are blown out of the cone and spread by the wind
31
How does the angiosperm lifecycle begin
When Pollen forms in the flowers anther
32
What are the three parts of pistil ( female part of the flower )
stigma,style and ovary
33
What happens when an organism enters a flower to obtain food
It becomes coated with pollen
34
What are the additional structure the help a flowering plant to reproduce successfully
Colorful sepals and green sepals
35
What is the colorful sepal
a sepal There is often pleasantly scented petals surrounding the plans reproductive organs and attract pollinators
36
What is green sepal
Protect the growing flower
37
What is a fruit
the Ripened ovary and other structures of an angiosperms enclosing one or more seeds
38
What are usually the most colorful parts of the Flower
petals
39
What and what are attracted by their color and scent
bee and insects
40
What are the female reproductive parts of a flower
pistil
41
They consist of a sticky stigma,a slender tube called the style,and a hollow structure called the what at the base
ovary
42
What are the male reproductive parts of a flower
stamen
43
What is produced in the anther,at the top of the stalklike filament
pollen
44
What are the small leaf like parts of a flower that they protect the developing flower
sepal
45
What is germination
Process of seeds developing into new plants
46
When does germination occur
It occurs when a seed lands in the spot with suitable conditions, or when The embryo sprouts out of the seed