Topics in BiologyMale Reproductive System: External and Internal Male Genitals Male accessory sex organs Food Chain, Food Web and Food Pyramid Skeleton, Type of Skeletal Materials and Differences between Cartilages and Bones Bones - Types of Bone Bones and Type of Bone part 2 Red Blood Cells and Hemoglobin Tropical Rainforest and Savanna with their characteristics Desert and Swamp Forest - Types of Desert, Characteristics of Deserts and Swamps Plant Nutrition and Photosynthesis - Autotrophic mode of Nutrition Amazing facts in Biology Protists - Examples and Characteristics of Protists Reptiles - Characteristics of Reptiles Homeostasis and Negative Feedback Mechanism Arteries, Layers of an Artery and Characteristics of Arterial Disorders Introduction to Biology - Basic Characteristics of Life
Academic Questions in Biology
Which of the following is a category of long bones?
The end product of photosynthesis is _____.
The above diagram illustrates a _____.
The living cells that makes up cartilages are called _____.
Which of the following statement is incorrect with regards to chitin?
Which of the following is NOT a function of the human skeleton?
Organisms that manufacture their own food through the help of sunlight or chemicals are best referred to as _____.
Organisms that begins a food chain and also manufacture their food through photosynthesis are best referred to as _____.
The tropical rainforest and savanna are generally considered as major biomes of the world.
A biome, also called a biotic community can be defined as the largest natural community of different organisms interacting and living in the same environment.
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 and other organisms interacting with each other.
The savanna in this instance (of a biome) is a naturally occurring community and will continue to be so because the environmental temperature within it will likely remain similar throughout the year.
In another animal documentary, you may be presented with an entirely different biome, let's say; the tropical rainforest. Here, you will observe that the living community in the tropical rainforest will be quite different from that of the savanna because they both have an entirely different annual temperature and climate.
Therefore, both the tropical rainforest and savanna are considered to be separate biomes.
Other biomes found on earth include:
- Swamp forests
In this article, we will dwell on the Tropical Rainforest and Savanna.
The tropical rainforest is located around the equator. It is present in the following regions:
- Amazon Basin of South America
- Coasts of West Africa
- Zaire Basin of Central Africa
- Within Malaysia
Below is an image of the Tropical Rainforest:
Image Credit: Biology Dictionary
The raining periods have 2 peaks.
Note: Think of the peak as the times of highest rainfall within a year.
These 2 peaks within the year (when we have the highest rainfall) are often referred to as the double maxima.
i. Upper Canopy Trees
ii. Middle Canopy Trees
iii. Lower Canopy Trees
iv. Bottom Canopy Trees
Climbers and Creepers are regarded as plants in need of support as they grow. They will always need to be attached to some form of support while growing. Examples are pea plants and ivy plants.
An epiphyte is a non-parasitic plant that grows on another plant. It is believed to derive its moisture and nutrients from the air, rain, water or from debris accumulating around it.
Epiphytes carry out photosynthesis: (that is; they can manufacture their own food). Examples are moss and orchids.
A parasitic plant is a plant that derives some or all of its nutrient from another living plant; and eventually causes harm to it.
Parasitic plants also carry out photosynthesis. (In fact, all plants carry out photosynthesis).
Examples of parasitic plants are Striga and Rhinanthus.
The savanna is also referred to as grassland because of the abundance of grass in this biome. Trees are relatively scarce in the savanna.
Below is an image of a Grassland:
Image Credit: Green & Growing
The savanna (grassland) makes up about 20% of the lithosphere.
Think of the lithosphere as the solid part of the earth.
Other parts of the earth are:
Hydrosphere: This is the part of the earth containing water.
Atmosphere: This is the part of the earth containing air.
Note: The grassland is sometimes considered as the middle line or transitional biome between the rainforest and the desert.
The savanna or grassland can be put into two groups. These are:
It is located between 5o North and 20o South of the equator.
The tropical grassland is found in the following regions:
- Central America
- West Africa
- Northern Australia
- Some parts of East Africa
South East Asia
- Within Brazil
They are found in the following regions:
- North America
- South Africa
- The Downs of Australia
- The Steppe of Central Europe and Russia
- The Veld of South Africa
- The Pampas of Argentina
- The Prairies of North America
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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.
Amazing facts in Biology
Male Seahorses actually give birth to their young ones, NOT the female
All babies are born with blue eyes
Research made at the University of Vienna suggested that yawning may play an essential role in cooling the brains
All voluntary and concious activity of right handed people are controlled from the left part or hemisphere of the brain
A snail can actually sleep for 3 years 😁
An adult human being is composed of about 60% water. In fact, a newly born baby is composed of about 80% of water. This will drop to 65% after a year and finally to about 60% as the child ages
Without saliva, food can never be enjoyed. Food becomes tasteless since saliva is needed to dissolve the chemicals present in food onto the tongue’s taste buds.
Saliva also contains an enzyme called salivary amylase or "ptyalin" which helps to digest cooked starch to maltose. Maltose is a double sugar or disaccharide. Please read on sugars here
NOTABLE POINTS IN Biology
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. Please read on photosynthesis here
Note: Plants are the only orgnisms that take away CO2 from the atmosphere
In the Biological organization of life, it is said that cells form tissues, tissues form organs and organs form systems. There are 12 systems in the human body; these are: