science
問題一覧
1
reproduction of offspring that does not involve the union of sperm and egg cells
asexual reproduction
2
starts with a single cell that copies its DNA and yhen splits into two identical cells
binary fission
3
when a new organism or the offspring grows off the side of the adult through a part called a bud
budding
4
a peice of an individual breaks off and a brand new organism forms around that broken piece
fragmentation
5
an offspring comes from an unfertilized egg
parthenogenesis
6
do not need a mate or fertilization to occur for nborder to produce oddspring
spores
7
are elongated and fleshy underground stems that branch in different directions near the souls surface
rhizomes
8
have nodes or eyes where new shoots appear and grow into a new plant
tubers
9
has horizontal stems that grow along the suface of the geoubd that produces a dew leaves
stolon or runner
10
round stem that grows under the ground and is enclosed in many fleshy leaves where a new plant can grow
bulb
11
thick stem that grows under the ground and looks like a bulb
corm
12
new plants produced from leaves
plantlets
13
involved removing a part fron the parebt plant like stem or leaf
cutting
14
done by inserting a cutting from one plant to another plant
grafting
15
a leyering could be done when the soil is mounded around the base of a plant causing the branches to grow roots
mound
16
involves partly cutting the outer layer of the plant stem covering it with moust soul and securing it with cloth or string
marcotting
17
involves two parents and produces offspring that are genetically unique
sexual reproduction
18
are the sperm and egg cells
gametes
19
fertilized egg cell
zygote
20
union of the egg and the sperm
fertilization
21
takes place when the eggs are retained
internal fertilization
22
usually occurs in aquatic environments
external fertilization
23
process by which pollen is transferred from the anther to the stigma of a plant
pollination
24
transfer of pollen grains from the anter to the stigma of the same flower
self pollination
25
when pollen grains are transferred from the anther of one flower to the stigma of another kind of flower
cross pollination
26
have pistil,stamens,petals,seps, and other parts
complete flowers
27
lack one or more parts
incomplete flower
28
have both male and female reproductive organs and can self pollinate
perfect flower
29
male reproductive organ
stamen
30
female reproductive organd
pistil
31
complex fertilization mechanism of flowering plants that involves the joining of a female gametophyte with two male gametes
double fertilization
science
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38問 • 2年前問題一覧
1
reproduction of offspring that does not involve the union of sperm and egg cells
asexual reproduction
2
starts with a single cell that copies its DNA and yhen splits into two identical cells
binary fission
3
when a new organism or the offspring grows off the side of the adult through a part called a bud
budding
4
a peice of an individual breaks off and a brand new organism forms around that broken piece
fragmentation
5
an offspring comes from an unfertilized egg
parthenogenesis
6
do not need a mate or fertilization to occur for nborder to produce oddspring
spores
7
are elongated and fleshy underground stems that branch in different directions near the souls surface
rhizomes
8
have nodes or eyes where new shoots appear and grow into a new plant
tubers
9
has horizontal stems that grow along the suface of the geoubd that produces a dew leaves
stolon or runner
10
round stem that grows under the ground and is enclosed in many fleshy leaves where a new plant can grow
bulb
11
thick stem that grows under the ground and looks like a bulb
corm
12
new plants produced from leaves
plantlets
13
involved removing a part fron the parebt plant like stem or leaf
cutting
14
done by inserting a cutting from one plant to another plant
grafting
15
a leyering could be done when the soil is mounded around the base of a plant causing the branches to grow roots
mound
16
involves partly cutting the outer layer of the plant stem covering it with moust soul and securing it with cloth or string
marcotting
17
involves two parents and produces offspring that are genetically unique
sexual reproduction
18
are the sperm and egg cells
gametes
19
fertilized egg cell
zygote
20
union of the egg and the sperm
fertilization
21
takes place when the eggs are retained
internal fertilization
22
usually occurs in aquatic environments
external fertilization
23
process by which pollen is transferred from the anther to the stigma of a plant
pollination
24
transfer of pollen grains from the anter to the stigma of the same flower
self pollination
25
when pollen grains are transferred from the anther of one flower to the stigma of another kind of flower
cross pollination
26
have pistil,stamens,petals,seps, and other parts
complete flowers
27
lack one or more parts
incomplete flower
28
have both male and female reproductive organs and can self pollinate
perfect flower
29
male reproductive organ
stamen
30
female reproductive organd
pistil
31
complex fertilization mechanism of flowering plants that involves the joining of a female gametophyte with two male gametes
double fertilization