Class 7 Exam > Class 7 Videos > Science Class 7 > Self and Cross Pollination
Self and Cross Pollination Video Lecture | Science Class 7
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FAQs on Self and Cross Pollination Video Lecture - Science Class 7
| 1. What is self-pollination and how does it occur? |  |
Ans. Self-pollination is the process where pollen from the same flower or plant fertilizes its own ovules. This can occur in plants that have both male and female reproductive structures, allowing for the transfer of pollen within the same flower or between flowers on the same plant.
| 2. What is cross-pollination and why is it important? | |
Ans. Cross-pollination is the transfer of pollen from the male anthers of one flower to the female stigma of another flower, usually of a different plant. It is important because it promotes genetic diversity, which can lead to stronger plants and better adaptation to environmental changes.
| 3. What are the advantages of self-pollination? | |
Ans. The advantages of self-pollination include the assurance of seed production even in the absence of pollinators, the ability to maintain desirable traits within a plant, and the efficiency in stable environments where conditions do not favor cross-pollination.
| 4. What are the disadvantages of cross-pollination? | |
Ans. The disadvantages of cross-pollination include the reliance on external pollinators, which may not always be available, and the potential for hybridization that could lead to unpredictable traits in offspring. Additionally, it can be less efficient than self-pollination in some stable environments.
| 5. How can gardeners encourage cross-pollination in their plants? | |
Ans. Gardeners can encourage cross-pollination by planting a diverse range of compatible plant species together, ensuring that they bloom at the same time. They can also attract pollinators by planting flowers that are appealing to bees and other insects, and by minimizing the use of pesticides that could harm these beneficial organisms.
About this Video
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Dec 23, 2024 Last updated |
Video Description: Self and Cross Pollination for Class 7 2024 is part of Science Class 7 preparation.
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