大象传媒

Asexual and sexual reproductionSexual reproduction in flowering plants

Bacteria and plants can reproduce asexually to produce genetically identical individuals. Sexual reproduction, involving the fusion of gametes introduces variety into animal and plant species.

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Sexual reproduction in flowering plants

Sexual reproduction - plants

In flowering plants, male and female reproductive structures can be found in the same individual plant. The organ of sexual reproduction is the flower.

Male gametes are found in pollen grains and produced in the anthers of the flower.

Female gametes are found in ovules and produced in the ovary of the flower.

The component parts of plant that allow reproduction: petal, anther, stamen, filament, stigma, ovary, ovule, nectary and sepal.
StructureFunction
SepalsProtect the unopened flower bud
PetalsMay be brightly coloured and scented to attract insects
StamensThe male parts of the flower consisting of the anther held up on the filament
AnthersProduce male gametes (in pollen grains)
StigmaThe top of the female part of the flower which collects pollen grains
OvaryThe bottom of the female part of the flower, produces the female gametes (in ovules)
NectaryMay be present to produce sugary nectar to attract insects
StructureSepals
FunctionProtect the unopened flower bud
StructurePetals
FunctionMay be brightly coloured and scented to attract insects
StructureStamens
FunctionThe male parts of the flower consisting of the anther held up on the filament
StructureAnthers
FunctionProduce male gametes (in pollen grains)
StructureStigma
FunctionThe top of the female part of the flower which collects pollen grains
StructureOvary
FunctionThe bottom of the female part of the flower, produces the female gametes (in ovules)
StructureNectary
FunctionMay be present to produce sugary nectar to attract insects

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