Question

On an island, finches that fed on large, hard seeds had large beaks. Finches with small beaks fed on small, soft seeds. A drought changed the vegetation on the island. After this period, the number of seeds declined. The decrease in small, soft seeds was greater than the decrease in large, hard seeds. What are two ways the decrease in seed availability will affect the population of birds on the island?
The population of birds with large beaks will increase on the island.
The population of birds with small beaks will increase on the island.
The trait for large beaks will be passed on to future generations through natural selection.
The trait for small beaks will be passed on to future generations through natural selection.
The population of birds with large beaks and birds with small beaks will be equal on the island.

Answer 1

Answer:

The correct options are:

• The population of birds with large beaks will increase on the island.
• The trait for large beaks will be passed on to future generations through natural selection.

Explanation:

According to the theory of natural selection, those organisms tend to survive in an environment which are better adapted to live in an environment and which can better adapt to changes that occur in an environment.

The drought caused the small, soft seeds to decrease more in number as compared to the large, hard seeds. As a result, the birds having large beaks were better adapted to live in the environment as compared to the birds having small beaks. So the population of the large beak birds increased and they passed their characteristics to the future generations.  

Answer 2

Answer:

1. The population of birds with large beaks will increase on the island.

2. The trait for large beaks will be passed on to future generations through natural selection.

Explanation:

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