Question

suppose a bird population had three main types of birds with the following traits. the birds eat grasshoppers that they catch in the grass.

bird trait	beak type
average weight (g)	69	75	82
average # offspring produced by each female	6	4	2
average age at death	3 years	1 years	6 months

1. which of these birds had an adaptation that best helped them survive? what was this adaptation and how do you think it helped them survive? give evidence to support your answer.
2. if a baby birds’ beak type is generally similar to its mother’s beak type, which beak type would be the most common among the offspring? (check one) _ long _ medium ___ short
3. suppose that one season the old beetles died off and now the birds had to eat tiny ants as their main source of food. think about what would happen to the population of birds as they tried to eat this very small insect. birds with which type of beak would best survive this season? (check one) _ long _ medium ___ short

Explanation:

Question 1

Step1: Analyze survival traits

Look at average age at death, offspring, and weight. Long - beaked birds live 3 years, produce 6 offspring. Medium: 1 year, 4 offspring. Short: 6 months, 2 offspring.

Step2: Determine best survival

Long - beaked birds have longer lifespan (3 years) and more offspring (6). Longer life means more time to reproduce, more offspring increases population. Evidence: 3 - year lifespan (longest) and 6 offspring (most).

Step1: Check offspring production

Long - beaked females produce 6 offspring, medium 4, short 2. So long - beaked females have more offspring.

Step2: Determine common beak type

Since baby beak type is similar to mother's, and long - beaked females have the most offspring, long beak type will be most common among offspring.

Step1: Consider food type

Tiny ants need a beak suitable for catching small prey. Long beaks can reach into small spaces or grasp tiny insects better than medium or short beaks (short beaks are for heavier birds but small ants need precision, long beaks are more agile for small prey).

Step2: Determine best beak type

Long - beaked birds' beaks are better adapted for catching tiny ants. Medium and short beaks may be less efficient for small insects.

Answer:

The long - beaked birds had the best - helping adaptation. The adaptation is the long beak (along with associated traits like 3 - year average age at death and 6 offspring per female). It helped them survive as they lived longer (3 years, longer than medium - beaked (1 year) and short - beaked (6 months)) and produced more offspring (6, more than medium (4) and short (2)), allowing them to pass on genes and maintain population.

Question 2