30. When organisms develop similar features in environments that are geographically far apart but similar in ecology and climate, despite different ancestry, this is referred to as which of the following? A. Coevolution B. Convergent evolution C. Divergent evolution
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
![### Evidence of Evolution
**30. When organisms develop similar features in environments that are geographically far apart but similar in ecology and climate, despite different ancestry, this is referred to as which of the following?**
A. Coevolution
B. Convergent evolution
C. Divergent evolution
**31. A biologist analyzes the DNA sequences in three different primates. The biologist finds that primates "A" and "B" have almost exactly the same DNA sequences. The DNA sequences in primate "C" are significantly different from those of primate "A" and primate "B." Which of the following conclusions can be logically drawn from this information?**
A. All three primates appeared on Earth at about the same time
B. Either primate "A" or primate "B" must be a direct ancestor of primate "C"
C. Primates "A" and "B" are more closely related to each other than either is to primate "C"
D. Primate "C" must have been the ancestor of both primate "A" and "B"
**32. Which of the following best explains how scientists are able to explain the [...]**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50dd4ec9-8a34-4494-b9fb-06a2c0c54c3b%2F4b07b9cb-7732-4a08-972e-649cec5f9d7d%2Fdb6ol_processed.jpeg&w=3840&q=75)
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