Protists are the eukaryotes which are neither plants, animals nor fungi. But they are plant-like, fungi-like and animal-like organisms. It is difficult to classify all the protists in one kingdom Protista because of their numerous diversified traits. There are a few parasites, predators and also producers among the protists. Some have a cell wall, while others have a cell membrane. Mode of locomotion can be flagella, cilia or the pseudopodia. The best example is the <em>Euglena</em> exhibiting both plant and animal like characteristics in having a chloroplast performing photosynthesis and exhibiting locomotion by flagella. These diversified traits made the scientists to reclassify the protists. The kingdoms which arose from protist ancestors include the kingdom animalia, plantae and mycota sharing common characteristic features with their ancestor. Scientists say that we should not look for the earliest ancestors of animals among modern-day protists because, the modern day protists have gone through a process of evolution which makes them different from their early ancestors. The gradual changes during the course of evolution has made them different from their ancestors with respect to their structure, adaptations and also the genetic composition.
Answer:
False
Explanation
The lungs are two in number and is the main organ for respiration in the body.
The thorax is also known as the chest. It has various parts attached to it such as the heart, lungs, thymus etc.
The mesothelial cells of the pleural membrane create pleural fluid which serves two purposes:
Lubrication
Attachment of the lungs to the thorax aren’t hereby done by the smooth muscles of the lungs.
Breast milk composition and frequency of demand feedings separate a carrying species from a nesting species.
<h3>What does patterns of parental care mean?</h3>
The patterns of parental care can be defined as stimuli that shape the relationship between parent and offspring in different species.
Carrying species are those species where parent care do not involve building nests for their offspring (conversely to nesting species).
In conclusion, breast and demand feedings separate a carrying species from a nesting species.
Learn more about nesting species here:
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Endocrine i believe, tell me if im right
