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 _____.
Alongside the tropical rainforest and savanna; the desert and swamp forests are also considered as a part of the major biomes of the world.
Recall that a biome, also called a biotic community is the largest natural community of different organisms interacting and living in the same environment.
Think of a biotic community as all the various living organisms that constitute an environment.
Having an understanding of the various biomes of the world will give you a better understanding of the biotic (living) community in their respective biomes.
Now let’s take a look at the desert and swamp forest.
Deserts are often considered to be dry land or arid land or a land with very little water.
Below is an image of a desert:
Image Credit: World Wildlife
The desert environment is usually very hot; with very little or no annual (yearly) rainfall.
An environment is defined as all external factors, internal factors, living factors and non-living factors that affect an organism.
The heat, air, water, food, objects around us, animals around us, people around us, plants and so on; all constitutes or make up our environment.
The living factors in an environment are sometimes referred to as the biotic factors or component while the non living factors are referred to as the abiotic factors or component.
Deserts can be classified into 2 types. They are:
The hot deserts are located on the western coasts of continents within latitudes 15o North and 30o South of the equator.
Xerophytes are defined as drought resistant plants OR plants that can survive in an arid land through various adaptive features found on them.Examples of xerophytes are: cactus, wiring grasses, thorn bushes and acacia.
Types of Hot Desert
Hot deserts include the followings:
1. Sahara Desert (North Africa)
2. Kalahari Desert (South Africa)
3. Iranian Desert (Iran)
4. Great Australia Desert (Australia)
5. Arabian Desert (Saudi Arabia)
6. Namib Desert (South Africa)
7. Atacama Desert (South America)
Cold deserts are found in the interior of continents around 45o North and 60o south of the equator.
Transpiration in plants is defined as a process through which water is lost from the aerial parts of a plant; especially throught the stomata present in the plant's leaf.
Water may also be lost from the plant's stem and flowers during transpiration.
Swamp forests are found in the tropical region (tropics), along the coastal regions all around the world.
Below is an image of a Mangrove Swamp Forest:
Image Credit: World Animal Foundation
In Africa, swamps are present in the river mouths in South, West and East Africa respectively.
A swamp can simply be regarded as a wetland dominated by woody trees and a variety of animals.
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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: