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When a pesticide is sprayed on a population of insects all insects do not get killed but few of them survive give reason?
Poisons are rated by LD50, the dose that kills 50% of a population. The dose can be increased to an LD90, LD99 or whatever but you can never guarantee that the dose will kill them all, as some individuals are more resistant to a specific poison than others are.
To get the last few highly resistant individuals may require a dose many orders of magnitude larger than the LD50.
What else can I help you with?
A researcher sprays a new pesticide on thousands of insects of the same species that live in a large field a few of the insect survive what can be concluded by the researcher?
The researcher can conclude that a small percentage of the insects possess traits that confer resistance to the new pesticide. This could indicate a genetic variation within the population that allows some individuals to survive despite the pesticide application. Further investigation would be necessary to understand the mechanisms of resistance and the implications for future pesticide use.
How does the use of antibiotics and pesticides cause resistance in insects and bacteria?
The use of antibiotics and pesticides creates an artificial selection scenario that culls bacteria and insects that cannot survive the treatments. Those micro-organisms and insects that do not succumb to the effects of antibiotics and pesticides survive to reproduce, and their offspring share their resistance to the antibiotics and pesticides that did not kill them. Now the entire population is resistant. Here is an example of how to make a population of insects pesticide resistant (micro-organisms respond similarly to antibiotics): Assumption: Insect Population I has a 99% mortality when exposed to Pesticide P Stage 1: 100,000 Population I insects are treated with Pesticide P Stage 2: Pesticide P treatment kills 99% of Population P Stage 3: 1,000 insects survive and reproduce Stage 4: Population R is 100% resistant to Pesticide P
How did pesticide-resistant insects came about as a result of evolution?
Natural selection, the method by which evolution works, is driven by the fact that organisms that die before reproducing do not pass on their genes to their offspring and because of this only those that can survive long enough to reproduce will do so and thus populations tend to be filled with those who survive the best in their current environment. The few bugs that don't die from pesticide reproduce and have (mostly) pesticide-resistant offspring that, in turn, have even more pesticide-resistant offspring.
What is an example of direct evidence for evolution is... genetic changes in plants antibiotic resistance in bacteria pesticide resistance in insects or all of the above?
All of the above examples are direct evidence for evolution. Genetic changes in plants, antibiotic resistance in bacteria, and pesticide resistance in insects all demonstrate how species can adapt and evolve to survive in changing environments. This supports the theory of evolution by natural selection.
Explain how a population of insects could become resistant to a pesticide?
Ironically, from being exposed to the pesticide for a long period of time. Given a long enough timeframe, a insect species will evolve a natural resistance to a chemical through natural selection.Insects quickly develop resistance to insecticides due to natural evolution. As their bodies are exposed to the chemicals, small changes are made until it no longer affects them over many generations.some insects will have an adaptation that helps them survive and that they pass onto their offspring.the insect population changes to include more and more resistant membersAnswer:This is evelution in action.If the insects are exposed to a pesticide that only kills some of them, the only future generations come from resistant parents. If the application if pesticide continues, it weeds out non resistant individuals enhancing the resistence of subsequent generations.
How do insects survive Cold Seasons - did their eggs survive or new insects just migrate from the South to replenish the dead population each year?
The eggs are well hidden in a warm place, some still freeze but 3/4 survive
Can insects survive on Mars?
No
How pesticides resistance evolve?
Pesticide resistance evolves through natural selection. When a pesticide is applied, some individuals within the target pest population may have genetic variations that make them less susceptible to the pesticide's effects. These individuals survive, reproduce, and pass on their resistant traits to their offspring, leading to an increase in resistance over time. Continuous use of the same pesticide can further select for resistance, making it more difficult to control the pest population.
Would a house plant survive if the only water that it was given was sprayed as a mist onto its leaves Why or Why not?
NO
Can the clownfish survive a box jellyfish sting?
no it cant cuase it sprayed the toilet with its noble turd
Is a pesticide resistant bug caused by a mutation or an adaptation?
A pesticide-resistant bug is typically caused by a mutation in its genetic makeup that enables it to survive exposure to the pesticide. Over time, this mutation allows the bug to develop an adaptation to the pesticide, making it more difficult to control.
How does the the akiapola'au bird survive?
They eat insects.
