Topics in BiologyHindbrain: 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
_____ 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)?
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
The following statements are true concerning blood vessels except _____.
A. They are comprised of arteries, veins and capillaries
B. Problems associated with blood vessels are called vascular disorders
C. All veins carry blood towards the heart
D. Capillaries are found at cellular level
E. Arteries usually divide to form arterioles
F. Arterioles give rise to capillaries
The above diagram shows a _____.
A. Food Chain
B. Food Web
C. Food Flow
D. Food Energy
E. Food Pyramid
F. Food Hierarchy
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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.
As an instance, when you watch the animal documentary program on television, you may be presented with a biome, let’s say savanna.
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:
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:
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.
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.
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.
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.
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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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Amazing facts in Biology
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
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:
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:
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:
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.
Note: Plants are the only orgnisms that take away CO2 from the atmosphere