plants
What's a fruit?
A fruit is the ovary of the flower that has grown larger.
What are stamens? A pistil?
A stamen is the male reproductive structure of a flower. Structures on the stamen called anther produce pollen. Pollen contains the male gametophyte, which produces sperm. The anther rests on a thin stalk called a filament. A pistil is female reproductive structure. The tip of the pistil is called the stigma. The long, thin part of the pistil is called the style. The rounded base of the pistil is called the ovary. The ovary contains one or more ovules. Each ovule contains an egg.
Define angiosperms.
Angiosperms are seed plants that produce flowers and fruit.
How else do plants reproduce?
Flowering plants can also reproduce asexually, or without flowers. In asexual reproduction, sperm and eggs do not join. A new plant grows from a plant part such as a root or stem. These plant part include plantlets. tubers, and runners.
Why are flowers important?
Flowers are important to plants because they help plants reproduce.
What are flowers the structure for?
Flowers are the structures for sexual reproduction in flowering plants. Pollination and fertilization take place in flowers.
What are a fruits major functions?
Fruits have two major functions. They protect seeds while the seeds develop. Fruits also help a plant spread its seeds to new environments.
What are flowering plants?
In angiosperms, or flowering plants, flowers are the reproductive structures. Flowers produce eggs and sperm for sexual reproduction. Flowers with all four parts are called perfect flowers. Flowers that have stamens but no pistils are male. Flowers that have pistils but no stamens are female.
What takes place in angiosperms and what do they depend on? How they travel?
In angiosperms, pollination takes place in flowers. Some angiosperms depend on the wind for pollination. Others rely on animals such as bees and birds to carry pollen from flower to flower. Angiosperm seeds develop inside fruit. The wind. Animals drop the seeds. Travel by sticking to animal fur.
What do pollinators do?
Pollinators brush pollen onto the stigma and style, and sperm from inside the pollen travel down the style to the ovary. One sperm can fertilize the egg of one ovule. After fertilization, an ovule develops into a seed. The ovary surrounding the ovule develops into a fruit.
What are sepals?
Sepals are leaves that make up the outer ring of flower parts. Sepals protect and cover the flower while is is still a bud. When the flower begins to open, the sepals fold back. Petals are leaf-like parts of a flower. They make up the next ring inside of the sepals. Petals are sometimes brightly colored.
Where does sexual reproduction begin?
Sexual reproduction begins in flowers when wind or animals move pollen from one flower to another. Pollination occurs when pollen from an anther lands on a stigma. Each pollen grain goes through the style to the ovary. The ovary has ovules, each of which contains an egg. Fertilization occurs when a sperm joins with the egg inside an ovule.