Biology

Savanna - Types of Savanna

len Alfred Ajibola - Thu, 09th January, 2020 @ 08:30

Topics in Biology

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 Seminal Vesicles and Bulbourethral Glands as Male Accessory Sex Organs Male Reproductive System: Scrotum and its contents 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: Characteristics and Causes of Arterial Disorders Types of Desert and their Characteristics Characteristics of Tropical Rainforest Swamp Forest: What are Swamp Forests? Characteristics of Swamp Forests Savanna: Savanna and Grassland explained Savanna - Types of Savanna Tropical Savanna and Temperate Savanna with their Characteristics


Academic Questions in Biology

Please check out our Test Your Knowledge page to see all Questions and Answers

Cold blooded animals are referred to as _____.

  • A. Homeotherms

  • B. Endotherms

  • C. Poilokitherms

  • D. Ectotherms

  • E. Thermotherms

  • F. None of the above

All reptiles are vertebrates.

  • A. True

  • B. False

_____ cells are responsible for the formation of osteoblasts.

  • A. Osteocytes
  • B. Chondrocytes
  • C. Chondroblasts
  • D. Osteoclasts
  • E. Osteoprogenitor cells
  • F. Osteoblastic

_____ is a bone that constitute the axial skeleton.

  • A. Clavicle
  • B. Scapula
  • C. Patella
  • D. Radius
  • E. Sternum
  • F. Femur

Which of the following is false concerning cartilages and bones?

  • A. Cartilage does not have a direct blood supply while bones have direct blood supply
  • B. The process of ossification replaces a cartilage to bone
  • C. The protein that makes up cartilage is called chondrin while that that makes up bone is called ossein
  • D. Cartilage grows from both ends while bones grow from one of its epiphysis
  • E. They both have living cells within them
  • F. Haversian system is absent in cartilage but present in bones

A diagram showing the movement of energy through a food chain is called a _____.

  • A. Food Chain
  • B. Food Web
  • C. Food Energy
  • D. Food Link
  • E. Food Flow
  • F. Food Pyramid

Which of the following is NOT a part of the wrist bones (or carpal bones)?

  • A. Cuboid
  • B. Scaphoid
  • C. Hamate
  • D. Triquetral
  • E. Pisiform
  • F. Trapezium

The statements below are true concerning arteries except _____.

  • A. The arterial wall has 4 layers

  • B. Tunica Adventitia is the outermost layer of an artery

  • C. Aorta is the largest artery in the human body

  • D. Pulmunary artery conveys deoxygenated blood

  • E. Internal bleeding will occur when a deeply located artery is broken

  • F. Arterial vascular disorders are worsened in people with diabetes and renal failure

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Types of Savanna

All savannas (or grasslands) share one underlying factor and that's 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.

Please read on the Introduction to Savanna here.

Generally, the savanna can be put into 3 types. These are:

  1. Climatic Savanna
  2. Edaphic Savanna
  3. Derived Savanna


Note: We also have other types of savanna based on their regions or location. Some of these includes:

  • Tropical Savanna
  • Temperate Savanna
  • Sudan Savanna
  • Sahel Savanna

Please read on Tropical and Temperate Savanna with their Characteristics here.


1. Climatic Savanna

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.

Please read on the Concept of a Biome here.

During the dry season, the biotic (living) components of the savanna which include plants (especially grasses) and various animals disappears. This is so 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.

Please read on the Methods of Plant Propagation here.

It is these departed plants and animals that eventually constitutes the savanna ecosystem.

Please read on the Concept of an Ecosystem here.

When the rains come (during the wet seasons), the spores and seeds of the grasses germinate and flourishes once again while the various animals migrate here (savanna) to graze on them. In addition, the rivers and lakes become filled up as life resumes to its fullest in the savanna.

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.

Please read on Tropical Rain Forests and its Importance here.

Please read on the Types of Desert and their Characteristics here.


2. Edaphic Savanna

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 and 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.

You can read on Ecology and Branches of Ecology here.


3. Derived Savanna

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.

You can read on the Differences between Plants and Crops here.

It has 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 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.


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For a thing to be considered Living, it must possess all the Basic Characteristics of Life. These include:

  1. Movement

  2. Respiration

  3. Nutrition

  4. Irritability or Sensitivity

  5. Growth

  6. Excretion

  7. Reproduction

  8. Death

  9. Adaptation

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Please read the explanations on all the Basic Characteristics of Life here

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  5. Growth
  6. Excretion
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  10. Competition

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