What is a Parasite? Parasites are organisms that live in or on another organism (its host), depriving it of nutrients and causing harm. The word parasite was derived from the Latin form of the Greek word parasitos which means one who eats at the table of another. In a parasitic relationship, the …
Definition of Tomato Is tomato a fruit or vegetable? To determine whether tomatoes are fruit or vegetables, the definitions of tomatoes and vegetables must be closely examined. The tomato is an edible fleshy berry of the plant Solanum lycopersicum or Lycopersicon esculentum and is commonly called the tomato plant. Tomatoes are tender …
What is Commensalism? Commensalism is a type of symbiotic relationship between two living organisms in which one of the organisms benefits from the other leaving it unharmed. The word commensalism is actually derived from the word commensal which means eating at the same table in human social interaction. Hence Pierre-Joseph van Beneden …
The Cell membrane or Plasma membrane is a thin selectively permeable layer that separates the interior of the cell from its outside environment. The cell membrane serves as the outer boundary of a living cell and also forms a boundary for an internal cell compartment that encloses organelles. It consists of a …
Endangered Species Definition Endangered species are species of animals or plants that are at risk of extinction, either in a specific political jurisdiction or globally. These organisms are listed as endangered because they are threatened and are likely to go extinct in the near future. Currently, Planet Earth is experiencing its 6th …
What Animals are extinct? Animals are said to be extinct when the last individual species of the animal dies and the animal’s entire genetic heritage is lost for life. Extinction however can be defined as a natural phenomenon where a kind of organism or species no longer exists on earth. An organism …
The functions of centrioles in plants and animals are discussed together with the structure. This organelle lacks a membrane and RNA or DNA. However, centrioles exist in most lower plants (algal cells except red algae, some fern cells, male gametes of charophytes, bryophytes, ginkgo, cycads, seedless vascular plants, moss cells), and animal …
What is Genotype? Genotype in a cell is a word that is used commonly, but not easily understood because of its accompanying vocabularies when defining it. Truly, the work of Gregory Mendel with the pea plant began to open people’s understanding of genes. He experimented on Pisum sativum (pea plant), in order …