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Vilka [71]
3 years ago
7

A farmer observes that increasingly higher concentrations of a particular pesticide have been required each year over the past t

en years to achieve the same level of effectivness on a specific insect pest. Which of the following best helps explain the observation?Some individual insects are more likely than others to survive and reproduce due to their inherited traits.the absorption of a substance by an organism at a rate greater than the rate of eliminationboth
Biology
2 answers:
MariettaO [177]3 years ago
7 0

Answer:

Some individual insects are more likely than others to survive and reproduce due to their inherited traits

Explanation:

Organisms are able to develop resistance to harsh environmental factors due to inherited traits which enable them to survive and become better adapted to their environment.

Some pests must have overtime acquired resistance to the concentration of the pesticide used in each year and passed on these traits to their offspring. This resistance accounts for the need for the use of a higher concentration of pesticide each year to overcome the resistance acquired by some pests.

anzhelika [568]3 years ago
4 0

Answer:

Some individual insects are more likely than others to survive and reproduce due to their inherited traits

Explanation:

One of the major challenges that farmers face in insect pest control and management of present, is the increase in pesticide resistance that most insect pests have built up over time with the increase in the quantity used.  

Over time some members of a population of insects that possess desirable traits that make them withstand the effects of chemicals and traits that increase their reproduction rate become selected against other members that have traits that make them unfit to survive.  

With time, the individuals with traits that make them fit to survive, produce more offspring with desirable traits than those individuals with traits that make them vulnerable and unfit. Members with inherited traits that increase resistance and survival, become more common in the population of that specific insect.

<em>This explains why higher concentrations of a particular pesticide have been required each ear over the past ten years to effectively eradicate same specific insect pest</em>.

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Explain the relationship between mutations, adaptations, natural selection, and extinction
Musya8 [376]

Mutations and natural selection cause adaptations. Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations.  

Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment.  

A mutation is an alteration of the DNA sequence. Sometimes such alterations code for the same amino acid sequence as the unaltered DNA strand during protein synthesis. In such a circumstance, the mutation is not detectable. However, other mutations alter the genetic code in such a way that a noticeable change in the trait that is associated with that gene is visible. Sometimes such mutations are advantageous and improve the organism's ability to survive in its environment.  

Natural selection is the process by which organisms with more advantageous traits (being camouflaged, being covered with the correct outer covering for the temperatures of that environment, stronger/ larger/ or faster to fight off or run from predators, etc.) are more likely to survive in a particular environment. Likewise, organisms less advantageous traits are more likely to die due to the pressures exerted by the environment (such as temperature, predators, illness, etc.). Therefore, the organisms with the advantageous traits that survive are more likely to survive to find a mate and reproduce. Thus, the advantageous traits are passed down to future generations.

<u><em>Hope this helps because I was learning about this today! </em></u>

<u><em></em></u>

<u><em>Soruces that might help: </em></u>

brainly.com/question/6836560

5 0
3 years ago
Read 2 more answers
A species with narrow niches that can survive in a small range of environmental conditions are
Ugo [173]

Answer:

D. Specialist Species

<h2>What is the advantage for species to be specialists, and how can they survive in the presence of opportunistic/generalist species?</h2>

In the setting of specialized habitats or unique situations, specialized species exist. When those conditions and surroundings change, they must adapt or go extinct, thus they must survive while they still exist.

When compared to generalists, they have the benefit of efficiency, which increases the likelihood of survival and, hence, reproduction within certain settings or situations. The generalists, on the other hand, have the benefit of being able to survive in a larger variety of circumstances and have a higher probability of doing so.

Cactuses, which are plants adapted to dry environments, are an example of specialization. More generalist plant species would typically outcompete cacti in most habitats on Earth, but very few of such species could endure the harsh conditions of a desert.

Extreme environmental conditions, competition for limited resources, and "evolutionary arms races" are some of the pressures that cause specialization. Cheetahs sprint quickly both because their prey moves quickly and because quicker cheetahs will be more effective hunters and more likely to procreate. The advantage of specialization is clear when seen from the standpoint of catching the next meal on a daily basis.

My key argument is that specialization's benefits must always be viewed in the context of the environment that generated the selective pressure that resulted in specialization. Although experts are specialists because they must be, their specializations put them in danger.

4 0
2 years ago
_____ is the asexual reproduction method conducted by starfish in which new organisms can grow from its sections. binary fission
astraxan [27]
Binary fissionis the method conducted by starfish
8 0
3 years ago
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If there are 46 chromosomes in a human cell, each with an average of of 5cm uncoiled length, estimate the length of DNA containe
Vikki [24]

Answer:

length would be 230 uncoiled

5 0
3 years ago
The three major components of connective tissue are.
stiv31 [10]

Answer:

1. specialized cells

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3. a fluid known as ground substance

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