The metabolic rate is defined as the rate at which metabolism occurs in living organisms. Summary There are many different processes that take place in living organisms at any given…
Reference
Phylum is a classification of major groups of animals or plants that share fundamental traits or evolutionary relatedness. Phylum is the level…
Reference
Fertilization is the process of the fusion of male and female gametes to form a zygote. The zygote is the…
Reference
Lifestyle is the typical way of life for a person or group of people. In animals, lifestyle is the living…
Reference
Oviparous animals reproduce by laying eggs instead of embryonic development occurring inside the mother. Summary In oviparous animals, fertilization can take…
Reference
Delayed implantation, also called embryonic diapause, is when mammals pause their pregnancies until conditions are better for the survival of their…
Reference
The trachea is often simply referred to as the windpipe and it has an important function to play in the…
Reference
The sternum is typically the nucleus of a protective rib cage. It’s large, flat, and runs down the center of…
Reference
A ruminant is an animal that has a unique digestive system. This digestive system typically consists of four stomachs. When…
Reference
In the animal kingdom, “opposable” is a term used regarding thumbs, whether it’s human or one of the rare animals…
Reference
Saprophagous organisms are any organisms that feed on (obtain the necessary nutrients for survival) dead or otherwise decaying matter. There…
Reference
Omnivores are animals capable of digesting plants or meat and obtaining the needed nutrients from both. Humans are primary examples…
Reference
The metacarpal bones make up the central portion of the hand, specifically the intermediate portion. The metacarpals start from the…
Reference
Old World is a common reference for Europe, Asia, and Africa—essentially anything east of the Atlantic Ocean when looking from…
Reference
The larva is a stage of growth that several types of animals have to go through before reaching their adult…
Reference
The basic definition of hermaphrodite is an organism that has both male and female reproductive organs. In botanical terms, it…
Reference
The gestation period is the amount of time a female is pregnant, and this time varies widely depending on the…
Reference
The femur bone is a major part of mobility, such as standing and walking. It is also essential for supporting…
Reference
Viviparous animals are conceived, and then they develop and grow within the placenta of the mother. The mother supplies all…
Reference
A proboscis can occur in mammals, insects, and other creatures. The most obvious example would be the elongated nose of…
Reference
While individually tiny, insects make up an extremely large percentage of the animal world. Many animals take advantage of this…
Reference
A species is considered introduced if its existence in an area is human-mediated. And the introduction of an animal or…
Reference
European geographers once thought that only Europe, Asia, and Africa existed. So after the Americas were discovered, they thought of…
Reference
Placentas have the same basic properties across species, but they differ all the way down to microscopic levels. For instance,…
Reference
Antennae have many functions and vary by appearance based on the species. But because they are so variable, it makes…
Reference
When a percentage of a population is migratory while the other is sedentary, they are considered partial migrants. Partial Migrant…
Reference
Scientifically speaking, we define breaching as “an animal leaping from the water with at least 40% of its body out…
Reference
Quadrupedal organisms move on four feet or limbs. Quadrupedal means “four-footed” or “four-limbed” derived from the Latin words quattor (four),…
