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  • What on the following list DOES NOT represent a life history feature that can vary between species?      <div class='qna

What on the following list DOES NOT represent a life history feature that can vary between species?

 

 


 

Option: 1

Age at first reproduction


Option: 2

Number of offspring produced per reproductive episode


Option: 3

Length of reproductive lifespan

 


Option: 4

All of the above can vary among different species


Answers (1)

best_answer

 

 

For correct Option D

For instance, some species may first reproduce at a young age, but others may do so at a later age. 

Similar to this, certain species may have many offspring each reproductive cycle while others may have fewer. Species can differ in terms of reproductive longevity as well. While certain species may have shorter reproductive lifespans than others, this is possible.

For Incorrect Option A

The age at which an organism starts reproducing is referred to as age at first reproduction. This may differ between species, or even within populations of the same species. Others may have a later age at first reproduction, which means they do not begin reproducing until they are older. Some species may have an early age at first reproduction, meaning they begin reproducing at a younger age.

For Incorrect Option B

Another crucial life history characteristic that might differ between species is the number of offspring born per reproductive episode. During a single reproductive event, such as a mating season or breeding cycle, an organism will generate a certain number of offspring.

One reproductive event may result in many offspring for certain species while only a few for others. For instance, a single female fish may lay thousands of eggs during a single spawning episode, as opposed to female mammals that typically only have one or two young at a time.

For Incorrect Option C

Another characteristic of life histories that might change between species is the duration of the reproductive lifespan. This refers to the time frame in which an organism is capable of reproducing, which, depending on the species, can range from a few months to several decades.

Some insects, like mayflies, for instance, have very brief reproductive lifespans of just a few days to a few weeks. On the other hand, some mammals, like elephants, can have long reproductive lives.

 

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