Biology HN: Plant Reproduction
What is the function of the generative nucleus?
divides to form 2 sperm nuclei
The plan of the _____ generation is larger and lives longer than the plant of the other generation
dominant
What is the root of a fern called?
rhizome
The sacs on the backside of a fern frond where spores are made are called....
sori
Fertilization in angio sperms is called ....
double fertilization
During fertilization, 1 sperm nucleus joins with 1 ____ = zygote
egg
The megaspore contains the...
egg
The embryo sac divides into 1 ____ and 2 ____ _____,
egg; polar nuclei
What is the female gametophyte generation in angiosperms?
embryo sac
Where does fertilization take place in conifers?
female cone (megasporangium)
What does the sporophyte generation of a fern consist of?
fern fronds attached by small roots called rhizomes
Curled fer fronds are called....
fiddleheads
The thin support portion of the stamen is called the...
filament
The specialized reproductive organs in flowering plants are located inside the....
flowers
The enlarged portion which contains the ovules is called the....
ovary
What is the female sporophyte generation in angiosperms?
ovules
flowers that contain both pistil and stamen are...
perfect
What is the sporophyte generation in the conifers?
pine tree
The female reproductive organ in angiosperms is called the...
pistil or carpal
1 sperm nucleus joins with 2 ___ ____ =endosperm nucleus
polar nuclei
The microspore contain the....
pollen (sperm)
What is artificial pollination?
pollen deliberately being transferred by human to allow the breeding of plants with specific, desired characteristics
What are is the male gametophyte generation of angiosperms?
pollen grains
What do the spores of angiosperms develop into?
pollen grains
When the pollen grain lands on a stigma, a ____ _____ begins to grow
pollen tube
The male reproductive organ is angiosperms is called the...
stamen
The tip of the pistil that is sticky is called the....
stigma
The thin support portion of the pistil is called the...
style
What is the female gametophyte of moss?
archegonium
What are all the petal together?
corolla
What is the chromosome # of the endosperm?
3n
When does double fertilization occur?
after the pollen enter the embryo sac
The thicker pouch at the top of the stamen is called the....
anther
What is the male sporophyte generation of angiosperms?
anther
Which part of the anther produces the pollen?
anther
What is the male gametophyte part of moss?
antheridium
In both mosses and ferns, eggs are produced in an organ called...
archegonium
What are all the sepal together?
calyx
Flowers that contain calyx, corolla, stamens and pistil are...
complete
A flower with a calyx, corolla, stamens, and pistil is called ______, and is also called ____ because it has both female and male parts
complete; perfect
The microspore and megaspores of the conifers develop inside the fall and female...
cones
What is the function of the tube nucleus?
controls the activities of the pollen tube
What is the dominant generation of moss?
gametophyte
The haploid generation in a plant's life cycle is called the_________
gametophyte generation
pine tree are a type of...
gymnosperm
There are ____ micro and megaspores created in the cones
many
What do angiosperms do to prevent self-pollination?
mature eggs and sperm at different times and pistil is really tall, high above stamen
What is the female cone called?
megasporangium
What is the female gametophyte generation in conifers?
megaspores
What process does the sporophyte generation use?
meiosis
What occurs within the anther of each stamen?
meiosis makes spores
What occurs inside the capsules?
meiosis occurs to create spores
What occurs in the sori?
meiosis occurs to make spores
What occurs inside the scales of the cones?
meiosis occurs to produce the spores
What is the opening in the ovule called?
micropyle
What is the male cone called?
microsporangium
What is the male gametophyte generation in conifers?
microspores
What process does the gametophyte generation use?
mitosis
What contains the antheridium and archegonium in a fern?
prothallus
What is the heart-shaped structure that makes up the gametophyte generation in ferns called?
prothallus
What is the base where the flower sits called?
receptacle
Once fertilized, the ovule becomes the _____ and the ovary becomes the _____.
seed; fruit
In conifers the embryo develops in to a ____ which is ....
seed; released into the air and if conditions are right will germinate in the ground with potential to become a new pine tree
What are the green outer leaves on a power called?
sepal
What is the function of the endosperm?
serve as food for the developing embryo
The generative nucleus divides into 2 ____ ____
sperm nuclei
Inside the ovary, which is the female sporophyte generation, meiosis occurs to produce four haploid _____. Only one remains and becomes the female gametophyte which is called the ____ ____.
spores; embryo sac
Inside the anther, which is the male sporophyte generation, meiosis occurs to produce four haploid ____. Each spore becomes a ____ _____, which is the male gametophyte. It contains 2 haploid nuclei, which we call the ____ nucleus and the ______ nucleus.
spores; sperm nuclei; tube; generative
The stalk tipped with a pore-bearing capsule of a moss plant is the....
sporophyte
What is the dominant generation in a fern plant?
sporophyte
Which generation is dominant in a gymnosperm life cycle?
sporophyte
The diploid generation in a plant's life cycle is called the ________
sporophyte generation
The parts of the sporophyte of mass are....
stalks and capsules
Why don't mosses grow very tall?
they lack a vascular system
There are two nuclei inside the pollen tube: the ____ nucleus and the _____ nucleus
tube; generative
ferns are a type of...
vascular seedless plant
What carries the pollen to the inside of the female cones?
wind
