Grade 12 Exam > Grade 12 Videos > Biology for Grade 12 > Pollination: Outbreeding Devices
Pollination: Outbreeding Devices Video Lecture | Biology for Grade 12
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FAQs on Pollination: Outbreeding Devices Video Lecture - Biology for Grade 12
| 1. What are outbreeding devices in pollination? |  |
Ans. Outbreeding devices in pollination refer to mechanisms or adaptations that prevent self-pollination and promote cross-pollination between different individuals of a plant species. These devices ensure genetic diversity in the offspring, enhancing the chances of survival and adaptation to changing environments.
| 2. How do outbreeding devices promote cross-pollination? | |
Ans. Outbreeding devices promote cross-pollination by preventing self-pollination. Examples of such devices include physical barriers like the separation of male and female reproductive organs in different flowers or plants, temporal separation of male and female flower maturation, and self-incompatibility mechanisms that reject self-pollen. These mechanisms encourage pollinators to transfer pollen between different individuals, increasing genetic variability in the population.
| 3. What is the significance of genetic diversity in pollination? | |
Ans. Genetic diversity resulting from cross-pollination is crucial for the long-term survival and adaptation of plant species. It allows for the creation of new genetic combinations that may confer resistance to diseases, pests, or environmental changes. Genetic diversity also promotes increased reproductive success and the ability to colonize new habitats, ensuring the overall health and resilience of plant populations.
| 4. Can outbreeding devices be found in all plant species? | |
Ans. No, not all plant species possess outbreeding devices. Some plant species rely on self-pollination, which can be advantageous in certain environments or conditions. However, many flowering plants have evolved outbreeding devices as a strategy to enhance genetic diversity and adaptability. The presence or absence of outbreeding devices depends on the specific evolutionary history and ecological context of each plant species.
| 5. How do outbreeding devices contribute to plant reproductive success? | |
Ans. Outbreeding devices contribute to plant reproductive success by increasing the chances of cross-pollination, which leads to the production of genetically diverse offspring. This genetic diversity improves the likelihood of successful seed germination, seedling establishment, and overall reproductive fitness. Additionally, outbreeding devices can prevent inbreeding depression, a reduction in fitness resulting from mating between closely related individuals, ensuring the long-term survival of plant populations.
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