Reproductive structures associated with flowers Flashcards
what are angiosperms
Angiosperms are the most highly evolved plant species to colonise terrestrial habitats
where are flowers found
A flower is a unique organ found only in angiosperms.
what is a flower
Flowers are the reproductive organ of angiosperms.
They contain both male and female reproductive organs that produce gametes
what do flowers do
Flowers are the structures of angiosperms that make seeds for plant reproduction. To make seeds, pollen has to combine with eggs.
how do Flowersfacilitatereproduction
by providing a platform forsperm and egg to fuse
what do flowers contain
Flowers contain and protect the reproductive organs of angiosperms.
why are flowers favoured
Flowers arevisually(sense of sight) andolfactorily (sense of smell) appealing to many different types of pollinators such as birds and insects
what is a whorl
arranged modified leaves that circle around a center point
what is the structure of a whorl
- Calyx(casing): consisting of green sepals and the casing of a developing (budding) flower.
- Corolla(crown): consisting of colourful petals.
- Androecium(male house): the structure associated with the stamen (the male reproductive organs).
- Gynoecium(female house): the structure associated with the carpel (the female reproductive organs).
what are the stamens
Thestamensare located in the androecium, themale partof the flower. Each stamen consists of afilamentand anantherwithpollen sacsormicrosporangia. Pollen grains (microspores) arehaploidand are produced through the process ofmeiosis.
where is the female part located
Thefemale part of the floweris located in the gynoecium and consists of a main carpel structure. The carpel consists of astigma,style and anovary.Ovulesare formed inside the ovary through the process ofmeiosis.
