These are all true except <span>"D. Natural selection usually causes a species to change suddenly," which is false. Natural selection and the subsequent changes to a species takes many thousands of years to have observable results. </span>
Answer:
The correct answer is - organisms become specialized for individual tasks and communicate with each other.
Explanation:
The cells of a multicellular organism in order to maintain homeostasis which is a balance of various factors in an individual organism that helps in health. The cells of multicellular organisms help as they become specialized for particular functions.
These cells communicate with each other to regulating the homeostasis. Cells of the multicellular organism function as the team however they are interdependent.
Thus, the correct answer is- organisms become specialized for individual tasks and communicate with each other.
Air passes from the trachea into the lungs through two large tubes called : Bronchi
Bronchi has the function to conducts air to the lungs (it somehow acts as an airway to the respiratory system)
hope this helps
The correct option is (A) None of their cells are far removed from the gastrovascular cavity or from the external environment.
<h3>
Why Planarians lack respiratory and circulatory system?</h3>
- Although planarians don't appear to have any respiratory or circulatory systems, they do have muscles that line the interior of the body in circular, diagonal, and longitudinal patterns.
- The flatworm doesn't have lungs, therefore it doesn't require a particular circulatory system like a human does to move oxygen throughout its body.
- Through its skin, the flatworm merely diffuses oxygen. Anywhere that it would want oxygen, this happens.
- None of the cells of planarians are a great distance from the gastrovascular cavity or the outside environment, hence they lack specialized respiratory and circulatory systems.
Learn more about the Planaria with the help of the given link:
brainly.com/question/1850129
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