What is a Eukaryotic Cell Eukaryotic cells are cells with nuclei surrounded by the nuclear membrane and these cells also have membrane-bound organelles. Eukaryotic organisms include protozoans, algae, fungi, plants, and animals. While some eukaryotic cells may be independent and can exist as single-celled microorganisms, other eukaryotic cells are part of …
What are Prokaryotes? Prokaryotic cells are cells without a true nucleus and lack membrane-bound organelles. The organisms are known as Prokaryotes – (pro means before; karyon means nucleus); Prokaryotes, therefore, are single-celled organisms (unicellular) that existed before the ones that have nuclei. Prokaryotic cells are therefore the simplest cells that are thought to have evolved before eukaryotic cells and …
What is Nucleus? The Nucleus is the largest organelle of cells that is involved in the control of the cell activities; it constitutes the central, more dense, part of the cell. It is usually rounded or ellipsoid. Occasionally it may be elongated, indented or lobed. It has a diameter of 10 to …
Classification of animals into groups has a lot of importance such as giving a summarized view of the animal kingdom (kingdom animalia). This summarized view is necessary due to the high population of members that make up the animal kingdom. One of the most common forms of classification is invertebrate animals and …
Humans, animals, and plants are globally distributed in ecology according to biotic and abiotic factors. These are termed cosmopolitan in their distribution. Some other animals have restricted distribution and they are said to be endemic. There are some plants such as coconuts (Cocos nucifera) which have a very wide endemic range which …
Vegetation in ecology plays a vital role in our natural ecosystem and also supports the biosphere in various ways. Vegetation helps to regulate the flow of numerous biogeochemical cycles, most importantly those of water, carbon, and nitrogen; it also contributes in the local and global energy balances. The term vegetation refers to …
The sun supplies all the energy needed by every living thing and this energy is used for growth, reproduction, digestion, movement and metabolism. Energy is trapped by plants to produce its own food (sugar) through a process called photosynthesis before it is transferred to animals who eat plants. This is the beginning …
Chaparral biomes in ecology cut across five continents of the world, this biome is similar to the desert biome because of its hot and dry climates. Fire is one of the major occurrences in chaparral forest; this fire outbreak normally occurs due to frequent lightning strikes. However, the fire is essential in …