Question

How do flowering plants produce seed ? Explain.

Answer 1

• Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. Most, but not all plants, have both male and female parts inside one flower. The stigma is usually in the centre and the stamens, which produce the pollen, cluster around it. The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.

Length of life cycle

• Flowering plants all go through the same stages of a life cycle, but the length of time they take varies a lot between species. Some plants go though their complete cycle in a few weeks – others take many years.
• Annuals are plants that grow from a seed, then flower and make new seeds, then die, all in less than a year. Some go through this cycle more than once in a year.
• Biennials are plants that take 2 years to go through their life cycle. They grow from a seed, then rest over winter. In spring, they produce flowers, set seeds and die. New plants grow from the seeds.
• Perennials are plants that live for 3 or more years. Some, such as trees, flower and set seeds every year for many years. Some others have stems and leaves that die away over winter but the plant continues to live underground. In the spring, new stems grow, which later bear flowers.

Answer 2

Answer:

Plants produce flowers to make seeds. To make a seed a flower must be pollinated. Pollen from the male part of one flower travels to the female part of another flower where the seeds are made. Most, but not all plants, have both male and female parts inside one flower. The stigma is usually in the centre and the stamens, which produce the pollen, cluster around it. The petals act like an advertisement to attract various animals, which will carry the pollen from one flower to another.