Nearly all botanists give animal pollinators credit for the vast smorgasbord of flower shapes and sizes observed in nature. … Ultimately, the process of diversification in flower form among species or genera of plants must be fueled by genetic variation in floral traits at the intraspecific level.
What are the variation of flowers?
There are three categories: hypogynous, perigynous, and epigynous. (a) hypogynous, if sepals, petals and stamens are attached to the receptacle below the ovary. The ovary in this case is said to be superior. Examples you may be familiar with include the flowers of tomato, tulip, and snapdragon.
Why do flowers occur in such a diversity of shapes and colors?
Flowers have an intricate relationship with pollinators, such as bees, birds, bats, and even the wind. This relationship has resulted in flowers evolving with various colors, shapes, and smells that ensure their survival, as these qualities are attractive to their pollinators.
Why do flowers have unique traits?
Flowering plants and pollinators, like bees, birds, and butterflies, depend on each other. … So, the more attractive a flower is to a pollinator, the greater its chance for reproduction. Flowers have many unique traits to advertise “Good Food Here!” and attract pollinators.
What are the features of flowers?
Most flowers have four main parts: sepals, petals, stamens, and carpels. The stamens are the male part whereas the carpels are the female part of the flower. Most flowers are hermaphrodite where they contain both male and female parts. Others may contain one of the two parts and may be male or female.
What causes Fasciation?
Causes of fasciation
Random genetic mutation or disruption. The bacterium Rhodococcus fascians. Viral infection. Damage to the plants by frost, animals (including insects), chemical or mechanical injury – even hoeing or forking around the plant have been implicated.
Why are there no black flowers?
Pigments inside the petals absorb certain wavelengths, while other wavelengths are reflected back towards our eyes, creating the colour we see. “Black petals are out of the question because the pigments that colour flowers don’t occur in black,” explains Alastair Culham, a plant scientist at Reading University.
Why are so many flowers yellow?
Color we see in flowers is the result of reflected light from various plant pigments. … Flavonol pigments make yellow and chlorophyll pigments make green. There are flavanoid pigments that are colorless to us, but also absorb UV light and make colors available to bees and other pollinators.
Why are flowers brightly colored?
This is because bright colors help attract these species and other animals, often enticing them to land on the flower. Once there, the insects and animals gather the flower’s pollen and nectar for food and then move on to the next colorful flower to repeat the process.
What is the main function of a flower?
The primary purpose of the flower is reproduction. Since the flowers are the reproductive organs of the plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma.
Why are plants so different?
Each plant species has its own characteristics. … The plants vary by the number of leaves they might have in a group, shape of the leaves, what color the flowers are or when the flowers might bloom. Botanists use these differences or characteristics to help identify the plants.
Why do different plants have different flowers?
Pollination occurs when pollen lands on the stigma of a plant. It then travels down to the ovar,y and it’s here that the ovules are fertilized. Most plants have flowers with the male and female parts present in each flower. Mostly, plants rely on insects, such as bees, to take the pollen from the anthers to the stigma.
What are structural features of a flower?
A typical flower has four main parts—or whorls—known as the calyx, corolla, androecium, and gynoecium (Figure 1). The outermost whorl of the flower has green, leafy structures known as sepals. The sepals, collectively called the calyx, help to protect the unopened bud.
What is the main feature of flowering plants?
Typically, flowering plants are organized into an underground root and a shoot above ground that consists itself of a stem and leaves. The organs of a plant that serve sexual reproduction are the flowers. Part of the pollinated flower ripens and becomes the fruit.
What is flower description?
A flower is the reproductive part of flowering plants. Flowers are also called the bloom or blossom of a plant. Flowers have petals. Inside the part of the flower that has petals are the parts which produce pollen and seeds. … Flowers may grow separately on the plant, or they may grow together in an inflorescence.