Question

In the autumn, many birds will collect seeds and then hide them in various caches throughout their habitat. The birds will guard their caches from other birds, and move the caches if they start to dry out. These caches provide a food source for the birds during the winter. What is an abiotic factor that contributed to the evolution of this set of behaviors?

A. cold winter climate

B. being preyed upon by larger birds

C. limited food availability

D. competition with other birds for space

Answer 1

Answer: c. limited food availability

Both biotic and abiotic factors are responsible for shaping the evolutionary framework of the population. Resource availability can be one of the important abiotic  factor in determining the evolutionary dynamics of the population or species. Limitations in resource can result in increase in competition.  According to population exclusion principle when two species compete for the same limiting  resource this results in co-evolution of both the species. But the extent of evolution may vary among the species. The one which undergoes more favorable evolution will be stronger competitor and drive more resources and will be fit for survival in adverse limiting conditions.

Answer 2

Answer:

A. cold winter climate

Explanation:

Abiotic factors refers to the physical and climatic conditions of the system. The observed behaviour to collect the seeds and hide them has been evolved in response to unfavorable conditions during winter season. The given birds prepare themselves to survive the harsh climatic conditions and low food availability during winter by storing the seeds during autumn.