Answer:
The correct option is <u><em>A. they evolved from land mammals.</em></u>
Explanation:
The process of evolution explains how closely one organism is to another based on their common ancestors. Scientists believe that those organisms which show many similarities in their structures or functions might have evolved from a common ancestor in the past.
As in the above-mentioned question, scientists have observed that cetaceans lack gills and breath air, this is a property of land mammals. The cetaceans have fin bones which are similar to the limb bones. As limb bones are present in land mammals, hence they cetaceans and land mammals might have common ancestors in the past.
Answer:
Telencephalon
Explanation:
The cerebrum is also known as telencephalon. It is a major part of the brain that houses the cerebral cortex (of both cerebral hemispheres), varying subcortical structures, plus the hippocampus, basal ganglia, and olfactory bulb. In the human brain, it is the uppermost zone of the central nervous system.
The inferior boundaries of the telencephalon are basically located at the diencephalon (e.g. thalamus and hypothalamus) and the brainstem.
The telencephalon houses the BIGGEST part of the brain, the CEREBRUM.
Answer:
Yes (True), Receptors on nerves work by opening ion channels (sensors) in the wall of the nerve.
Answer: None of the Above.
Explanation: Protista can be anything, and are basically off-brands, Plant based, Fungi Based, Animal Based, Etc.So the ENTIRE kingdom cant be Prokaryotic or Eukaryotic.
Animals and Plants aren't Single-Celled because you can see them.
Fungi are Eukaryotic
