According to Reference.com, there is no difference between a pollywog and a tadpole. Both words describe the larval stage of the toad or frog. These amphibians for the most part live in the water during this stage of their lives.Know More
Frogs and toads begin their lives as eggs laid in the water. The eggs hatch into tadpoles. As the tadpole matures, it goes through a metamorphosis by gradually growing legs followed by the arms. The tail of the amphibian is then absorbed. About the same time the animal develops legs, it is also developing lungs, allowing it to live on the land. Late during the tadpole stage, the animal lives near the water's surface and is breathing air. During the final part of the amphibian's life as a tadpole, the small enclosed mouth changes to a mouth as wide as its head.
As tadpoles become frogs or toads, their diet also changes. During the tadpole stage, the amphibian is an herbivore. Algae and plants in the water meet its nutritional needs. However, in the adult stage, it becomes an omnivore, with a diet consisting primarily of insects.
The etymology of both tadpole and pollywog depend on the Middle English word "pol," meaning head. Tadpole uses another Middle English word, "tadde" from which the word toad derives, while pollywog uses "wiglen" meaning to wiggle.Learn more about Zoology
The main difference between parasites and predators is that the former are organisms that live at the expense of another organism, called the host, while the latter capture and feed on another organism, called the prey. The Australian Museum explains that parasites are generally smaller than their host, whereas predators are typically larger than their prey. Moreover, parasites do not kill their host, but predators often kill their prey.Full Answer >
A mature female chicken is called a hen, making the only difference between a chicken and a hen its sex and age. A mature male chicken is called a rooster, cock or roo.Full Answer >
While taxonomy is the classification and naming of all living things, systematics refers to the study of the relationships between these living things as they evolve. Taxonomic hierarchy was devised and published by Swedish scientist Carl Linne in 1735. All branches of systematics, such as botany, zoology, microbiology and mycology, are covered under taxonomy. Taxonomy as the science of biological classification is a subdivision of systematics.Full Answer >
Endotherms produce their own heat; ectotherms rely on environmental heat. Most ectotherms are cold-blooded while most endotherms are warm-blooded, but there are exceptions. Mammals are endotherms, and reptiles and amphibians are ectotherms.Full Answer >