BIOLOGY MIDDLE SCHOOL

The evolution of lungs and gills, which developed to serve a similar gas-exchange purpose in distantly related organisms, is an example of what type of evolution?A. convergent evolution
B. natural selection
C. emergent evolution
D. divergent evolution

Answers

Answer 1
Answer:

Answer:

The correct answer is option A, that is, convergent evolution.

Explanation:

The convergent evolution in evolutionary biology refers to the phenomenon in which the organisms that are not closely associated, that is, not monophyletic, autonomously evolve identical characteristics as a consequence of having to amend to ecological niches or identical surroundings.  

For example, the evolution of lungs and gills that serves similar functions in distant organisms is an illustration of convergent evolution.  
Answer 2
Answer:

Answer:

A. Convergent evolution

Explanation:

If analogous or structurally different oragns performing similar function.. We call that convergent evolution.

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Answers

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The genes that code for two different traits:

Answers

Answer:

Pleiotropic genes?

Veins _____. carry blood away from the heart produce red blood cells are only found in the heart usually carry deoxygenated blood

Answers

Answer: Usually carry deoxygenated blood.

I got this one right on my test o(^U^)o

Explanation:

Answer:

Carry blood to the heart

Explanation:

What kind of relationship would a hummingbird an a daffodil have?

Answers

The answer to the question of "what kind of relationship would a hummingbird an a daffodil have?" is that they have a mutually beneficial relationship, also called a mutualistic relationship - the hummingbird gets food from the flower and the flower can "use" the bird for polination, so they both benefit from each other's behaviour

When scientists are doing research to determine how the environment affects a life form, it often takes many years to reach a conclusion. Why do you think that is the case?A. Many environmental factors must be considered (water, light, and temperature were just three that were investigated in this simulation).
B. Many tests must be performed because variables need to be tested one at a time (first test for water effects, then test for light effects, etc.).
C. Some effects take a long time to become noticed, so the experiments often have to take place over long periods of time.
D. All of the above.

Answers

Answer:

The correct answer is option D, that is, all of the above.

Explanation:

While performing an experiment to find the effects of the environment on a life form there is a need to consider a lot of factors as many factors in tandem can affect the species in a mentioned scenario. While testing some of the variables would not be seemed obvious at first instance, therefore, in the first look or test, the outcomes are generally inconclusive. At the same time, there is a need for each of the variables to be tested carefully, and also some of the variables may consume more time in order to sound conclusive.
          D. All of the above 

How can the environment be organized into levels from simple to complex?

Answers

Answer:

The organization of the environment from simple to complex is:

  • Individual
  • Population
  • Community
  • Ecosystem
  • Biosphere

Population refers to the total number of living organism present in a particular area. For example, the human population of any city.

Community refers to the group of populations of two or more species living in a particular area.

Ecosystem refers to the biological community consists of biotic, abiotic, and interaction of biotic and abiotic components.

The biosphere is the region occupied by living organisms. It includes atmosphere, hydrosphere, and lithosphere.
The levels of an environment to be organized are populations,species,community,and the ecosystem
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