Most ducks had less webbing on their feet than their parents The amount of webbi

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Most ducks had less webbing on their feet than their parents The amount of webbing on ducks' feet had no relationship with the amount their parents had Q6.9. Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. These ducks spent time on both land and water. Individuals of this species varied in the amount of webbing in their feet, with some individuals having more webbing and some having less. As many years went by, the environment changed such that the aquatic food sources were much more plentiful than those on land. Many generations later, almost Ducks with less webbing worked harder than ducks with more webbing to eat aquatic plants. The Due to chance mutations, all the ducks feet in the next generation had more webbing. They were o Ducks with more webbing were better at eating aquatic plants than ducks with less webbing, so the all ducks had more webbing on their feet. How is this best explained? more they used their feet, the more webbed their feet became, so they got enough food to survive and reproduce. therefore able to eat aquatic plants and get enough food to survive and reproduce. ducks with more webbing survived and reproduced better than ducks with less webbing Ducks with less webbing needed to grow to aquatic plants, which allowed them to survive better and reproduce more more webbing in their feet in order to improve their access Horned lizards use their horns to defend against predatory birds. A researcher Q6.10. observed that lizards living in areas with predatory birds have longer horns than those

Explanation / Answer

Webbed feet in ducks may be described as a survival trait, as it helps them to swim in water, and gather food. Ancestral ducks had availability of varied food types in both land and aquatic habitats. They had a varied degree of webbed feet trait, depending upon the type of food availability in aquatic habitat or land. This trait was passed to the offspring.

But, when there was abundance or better food availability in the aquatic habitat, some species of duck, could exhibit extensive adaptations of their feet, like stretching, to develop proper webbed feet, which helped them to gather food easily from the aquatic habitat. The other species of duck, unable to adapt, and eventually died due to food scarcity.

The species of duck with webbed food or adaptation and variation, survived, reproduced, trait of webbed feet evolved in the next generations. Thus, evolution occurred by natural selection.

Answer: Ducks with more webbing were better at eating aquatic plants than ducks with less webbing, so the ducks with more webbing survived and reproduced better than ducks with less webbing.

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