Answer:
The transfer of mature pollen grain from anther of the flower to the stigma of the same flower of the same [species is called self pollination.
Generally, the transfer of pollen grains by wind,animals,and water to stigmas is called pollination. It is a means of vegetative propagation which ensures reproduction.
Therefore during self pollination, the same genes are distributed from one generation to another. Thus genetic purity is ensured. It also ensured reproductive success. because there is little chance of the pollen grain getting lost in transit. It is also certain a particular plant would always breed true.
Additionally it prevent the process of transfer of genes in some transgenic crops( rice, maize) where through genetic engineering some genes are introduced in their genome.
The only negative effect is lack of genetic diversity. Therefore after a period of time the plants get weak and prone to diseases and infection. Because of poor resistant from lack of variation.
Explanation:
The central point which is described as the abdomen is categorized into four quadrants is the abdominopelvic quadrants.
<h3>What are abdominopelvic quadrants?</h3>
The abdominal region is generally divided into quadrants, which is referred to as abdominopelvic quadrants.
The four abdominopelvic quadrants are as follows:
- Right-upper quadrant (RUQ).
- Left-upper quadrant (LUQ).
- Right-lower quadrant (RLQ).
- Left-lower quadrant.
Thus, The central point which is described as the abdomen is categorized into four quadrants is the abdominopelvic quadrants.
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- Oxygen cycle is the cycle which maintains the level of oxygen in the atmosphere.
- Oxygen from the atmosphere is used up during combustion, respiration and in the formation of oxides of nitrogen.
- This oxygen is returned to the atmosphere by lithosphere.
- This forms the oxygen cycle in nature.
Hope you could get an idea from here.
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