Biology

Savanna: Savanna and Grassland explained

len Alfred Ajibola - Thu, 09th January, 2020 @ 08:31: AM

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

LEN ACADEMY SMART SCHOOL SOFTWARE

Image

Click here to read more on its smart academic features. Recommend to a school and get N50,000

Please click here to kindly support education


Savanna | Grassland:

The biome savanna (also spelt as savannah) is referred to as a grassland because of its abundance of grasses. Trees are widely spaced and relatively scarce in the savanna.

Please read on the Concept of a Biome here.

As an instance, when you watch the animal documentary program on television, you may be presented with a biome, let’s say savanna.

You can read on Tropical Rainforest Biome and its Importance here.

Within the savanna, you will see grasses, zebras, hyenas, lions, birds, insects and other organisms interacting with each other. Together, they form the savanna ecosystem. This is shown in the image below:

Savanna | Grassland - Len Academy

Please read on the Introduction to Ecosystem here.

The savanna (grassland) makes up about 20% of the lithosphere. You can imagine the lithosphere to be the solid part of the earth. Other parts of the earth are:

  1. Hydrosphere: This is the part of the earth containing water.
  2. Atmosphere: This is the part of the earth containing air.
    Please read on the Composition of the Atmosphere here.

An important question to ask concerning the savanna is:

Why do we have grasses as the dominant plant community in the savanna?

The answer to the above question is simply because of its type of climate which is quite unique to it.

During the summer (dry season) of savanna, its vegetation and animals disappears from a lack of rainfall. The grasses typically dies during this season due to a lack of water in its soil and from fires which can be very common during this dry and windy season. In addition, the rivers and lakes dry up giving rise to the migration and disappearance of animals from the savanna until the rains come again.

You can read on the Desert Biome here.

The ability to survive the wild fires of the savanna is an inherent characteristics present in the biotic community of the savanna. To this end, the grasses propagate their seeds and spores deep into the soils, birds fly away, certain insects burrow their way deep into the soil during the wild fires while other animals migrate and run for their lives.

The survival of the biotic component of the savanna ecosystem is therefore an important aspect of the savanna.

Please read more on the Components of an Ecosystem here.

Note: The biotic community of the savanna simply refers to all the living organisms (plant and animal community) present within it.

During the periods of rainy season (which may begin around March), the plant (grasses) and animal community thrives again and the savanna environment becomes completely different from what we had in the dry season. During this time (rainy season), the grasses flourish, the river and lakes reappears and various animals return to graze on them. The grasses are able to regenerate from the harsh dry and windy season due to the favorable environment (from the presence of water), their nature of propagation and short life cycles.

In summary, the nature of savanna's climate (marked by a windy dry season and wet rainy season) presents the sharp contrast in its vegetation during both seasons.

Please read the explanations on various Ecological Concepts here.

Note: The grassland is sometimes considered as the middle line or transitional biome between the rainforest and the desert.

The savanna can be put into different types based on various factors.

Please read on the Types of Savanna here.

Please click here to follow Len Academy on Google News.

Please like and follow our official facebook page here for great educational write-ups.

You can follow Len Academy on twitter here.Thank you.


Kindly share this article via the links below:


len

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.


Please Register here or Login here to contribute to this topic by commenting in the box below.

CONTRIBUTE TO THIS TOPIC | ASK A QUESTION


Amazing facts in Biology

Armadillos - Len Academy

Armadillos are western mammals known for their unique armor-like shell which are bulletproof

Polka-dotted zebra - Len Academy

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

Shrimp - Len Academy

A 🦐 shrimp's 🦐 heart is in its head

Women have more pain receptors than men

It's crucial you finish your antibiotics.

If you stop taking your antibiotics before you're supposed to, any bacteria that didn't get killed can develop an immunity to that antibiotic and become a super-strain, making it much difficult to kill in the future. So keep taking your antibiotics pill, even if you feel better.

Although rare, women can still give birth when they die. This is known as coffin birth

Men can actually get aroused post moterm. This is called priapism


NOTABLE POINTS IN Biology

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

  10. Competition

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

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

Food Chain - Len Academy

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:

  • Terrestrial (Land)
  • Aquatic (Water)
  • Arboreal (🌲 Treetops)

You can read on Food Chain here

The term Biology originated from two Greek words. They are:

  • Bios: means life.
  • Logos: means knowledge or to study.

Biology can therefore be defined is 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:

  1. Movement
  2. Respiration
  3. Nutrition
  4. Irritability or Sensitivity
  5. Growth
  6. Excretion
  7. Reproduction
  8. Death
  9. Adaptation
  10. Competition

The above listed points are often regarded as the basic characteristics of life. You can memorize them using the acronym (MR. NIGER DAC).

You can read on the introduction to Biology and the basic characteristics of life here

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.

Please read on photosynthesis here

Note: Plants are the only orgnisms that take away CO2 from the atmosphere