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Reproduction from Seeds Video Lecture | Science Olympiad for Class 5
FAQs on Reproduction from Seeds Video Lecture - Science Olympiad for Class 5
| 1. What is seed reproduction? |  |
Seed reproduction is a process in which plants produce new offspring through the formation and dispersal of seeds. It involves the fertilization of a plant's ovule by pollen, resulting in the development of a seed that contains the genetic information needed to grow into a new plant.
| 2. How do seeds reproduce? | |
Seeds reproduce through a series of events that start with pollination, where pollen from the male part of a plant is transferred to the female part. This leads to fertilization, where the pollen combines with the plant's ovule to form a seed. The seed then undergoes maturation and is eventually released from the parent plant, allowing for dispersal and germination in suitable conditions to give rise to a new plant.
| 3. What are the advantages of seed reproduction? | |
Seed reproduction offers several advantages. Firstly, seeds are capable of being dispersed over long distances, increasing the chances of plants colonizing new areas. Secondly, seeds provide protection to the developing embryo, allowing it to survive harsh conditions or periods of dormancy. Additionally, seeds contain a food supply, which provides nourishment to the growing embryo during germination.
| 4. How does seed dispersal occur? | |
Seed dispersal occurs through various mechanisms. Some plants rely on wind to carry their seeds away from the parent plant. Others use animals, such as birds or mammals, to consume the seeds and disperse them through their droppings. Some plants have adaptations like hooks or barbs that allow their seeds to latch onto the fur or feathers of animals, aiding in dispersal. Water can also play a role in seed dispersal for certain plant species.
| 5. What factors affect seed germination? | |
Several factors influence seed germination. Temperature, moisture, and oxygen availability are crucial for initiating the germination process. Some seeds require specific temperature ranges or periods of cold stratification before they can germinate. Light exposure can also impact germination, as some seeds require light to trigger the process, while others need darkness. Additionally, the presence of inhibitors or hormones within the seed can affect germination rates.
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