Topics in BiologyTropical savanna explained with its characteristics Ecological pyramid explained with its importance and limitations Hindbrain: Medulla Oblongata and its features Food web explained with examples Biology Scheme of Work, SS1, First Term Biology Scheme of Work, SS1, 2nd Term Biology Scheme of Work, SS1, 3rd Term Male accessory sex organs: Seminal vesicles and bulbourethral glands Scrotum and its contents: Testicles Brain: Introduction to the human brain Forebrain: Lobes of the cerebrum and their functions Cerebellum: Parts and functions of the cerebellum Midbrain: Division and functions of the midbrain Negative feedback mechanism in homeostasis Arterial disorders explained with their causes Types of desert and their characteristics Characteristics of tropical rainforest Swamp forest: What are swamp forests? Characteristics of swamp forests Savanna biome: Concept of the savanna
Academic Questions in Biology
In a food chain, the primary consumers are classified under trophic level _____.
Cold blooded animals are referred to as _____.
F. None of the above
All reptiles are vertebrates.
_____ cells are responsible for the formation of osteoblasts.
_____ is a bone that constitute the axial skeleton.
Which of the following is false concerning cartilages and bones?
A diagram showing the movement of energy through a food chain is called a _____.
Which of the following is NOT a part of the wrist bones (or carpal bones)?
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All savannas (or grasslands) share one underlying factor and that's their similar climate. In fact, it is the nature of their climate that give rise to grasses as their dominant plant population.
Savanna (also spelt as savannah) are often referred to as grasslands.
Generally, the savanna can be put into 3 types. These are:
However, understand that we also have other types of savanna based on the region or location where they are present. Some of these includes:
Please read on tropical savanna here.
Please read on temperate savanna here.
Climatic savannas are formed as result of their climate. In fact, most savannas seen around the world are climatic in nature. These will include the tropical savanna and temperate savanna.
The climate of a savanna biome is usually comprised of two seasons. These are: the dry (windy) season and the wet (rainy) season.
During the dry season, the biotic (living) components of the savanna which include plants (especially grasses) and animals disappears. This is the case because wild fires are common during this period. As a result, the grasses are burnt up while the animals run away or burrow themselves deep into the soil as means of survival.
Note: During this period, the savanna is laid bare. For this reason, most trees cannot survive in the savanna as a result of the long dry seasons. However, the grasses are adapted to survive due to their methods of propagation and short life cycles.
When the rains come (during the wet seasons), the spores and seeds of the grasses germinate and flourishes once again while animals that had migrated return to the grassland to graze. Once again, the rivers and lakes become filled up as life resumes to its fullest in the savanna.
From the above explanations, we can infer that plant and animal community are adapted to survive in the savanna. It is these adapted plants and animals that eventually constitute the savanna ecosystem.
It is the climatic conditions of the savanna that gives rise to its nature of biotic community and ecosystem. In short, this is what differentiates the savanna from other biomes like the tropical rainforests and deserts.
The word 'edaphic' relates to the soil. Edaphic savannas are formed based on the nature and type of soil present within it.
Typically, the soil as seen in edaphic savanna isn't quite rich in nutrients. It is also not deep enough. As a result, the growth of trees aren't supported here. Conversely, grasses can adapt and flourish here because of their inherent survival characteristics to soils will poor nutrients.
Edaphic savannas are typically smaller when compared to climatic savanna. In addition, they are often found in regions with lesser annual rainfall and warmer climate.
As the name implies, these savannas are derived from other types of biomes.
As an instance, the government of a nation may decide to clear out a forest area, converting it into a savanna. To this end, they will probably cut down all the trees and plant grasses in replacement, thus making it a derived grassland.
It had also been reported that the grazing actions of African elephants have given rise to derived savanna in areas that initially had a good population of trees and other plants.
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 10 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.
Amazing facts in Biology
99% of a panda's diet is bamboo. They may eat fish or other small animals occasionally
When attacked by insects, lima beans plant will often command parasitic wasps to their defence.
When the leaves of the lima bean's leaves are eaten by insects, the plant gives off a substance that signals parasitic wasps to swam in, destroying its enemies (the leaf-eating insects) in the process
Frogs drink water through their skin
Armadillos are western mammals known for their unique armor-like shell which are bulletproof
Although zebras are known for their characteristics black and white stripes, we still have some polka-dotted zebras
Charles Darwin is a British naturalist and biologist who contributed greatly into the study of evolution. According to research, he frequently ate the animals he studied
Lungs are the only human organ that can float on water
Unlike most snakes that lay eggs, anacondas give birth to live babies
A shrimp's heart is in its head
Women have more pain receptors than men
NOTABLE POINTS IN Biology
For a thing to be considered living, it must possess all the basic characteristics of life. These include:
Irritability or Sensitivity
During strenuous exercises like sprinting or running, your body may actually work in the shortage of oxygen. During this time, your body owes oxygen (called oxygen debt) and it must be replenished or repayed after the exercise is stopped. This is why you breathe excess of oxygen after you stopped the exercise.
This is the concept of anaerobic respiration
A food chain is a diagram that shows the relationship between plants and animals within a habitat on the basis of how they rely on each other for food.
Note: Habitat is a place where an organism live. It is of three types:
The term Biology originated from two Greek words. They are:
Bios: means life.
Logos: means knowledge or to study.
Biology can therefore be defined as the study of life
Anything that has life is generally considered as a living organism (or organism). All living organisms must be able to carry the following activities:
Irritability or Sensitivity
The above listed points are often regarded as the basic characteristics of life. You can memorize them using the acronym -> MR. NIGER DAC.
The gas used in the manufacture of food by plants is Carbon dioxide or Carbon(IV)oxide or CO2
Plants manufacture food through a process called photosynthesis.
It is noteworthy to state that plants are the only orgnisms that take away CO2 from the atmosphere