Topics in Biology
Tropical savanna explained with its characteristics Ecological pyramid explained with its importance and limitations 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 Male accessory sex organs: Seminal vesicles and bulbourethral glands Scrotum and its contents: Testicles 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 explained with their causes Types of desert and their characteristics Characteristics of tropical rainforest Swamp forest: What are swamp forests? Characteristics of swamp forests Savanna biome: Concept of the savannaAcademic Questions in Biology
In a food chain, the primary consumers are classified under trophic level _____.
A. Zero
B. One
C. Two
D. Three
E. Four
F. Five
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.
_____ 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)?
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Food chain can be interlinked in a habitat, giving rise to food web. An understanding on the concept of food chain is vital towards comprehending a food web. This is true because a food web is simply a complicated food chain.
Recall that a food chain is a diagram that shows the feeding relationship between organisms (plants and animals) in a given habitat.
In order to properly explain what a food web really is, a diagram that shows its illustration is required. Below is a diagram that shows a food web.
Using the above diagram as a point of reference, notice that the feeding pattern is interlinked. In fact, it is this interlinking of food chain that gives rise to a food web.
Consider the explanations below. The diagram serves as our reference.
EXPLANATION 1:
The aformentioned observations are illustrated below:
Berries >> Grasshopper >> Frog >> Snake >> Titmouse >> Fox
This illustration (above) is just one of the various food chains shown in the diagram. In this case, it is commenced by the berries, (called producers in a food chain). You will also observe from the diagram that another food chain in the same habitat is commenced by the plantain (also a producer).
Please read on autotrophic nutrition and photosynthesis here
Meanwhile, always remember that the producers will always commence a food chain while the decomposers ends it.
Notice that the food chain which commenced by the berries were directly consumed by the grasshopper, greenfly, butterfly and titmouse. These set of consumers are generally referred to as primary consumers as illustrated in explanation 2 below.
EXPLANATION 2:
Recall that the food chain in explanation 1 began with the berries which were consumed by the grasshopper, a primary consumer.
Notice that apart from the grasshopper feeding on berries, the greenfly, titmouse and butterfly also fed on the berries, thus initiating their respective food chain at the level of a primary consumer.
Once again, it is important to state that the interlinking of food chains will give rise to a food web. In this instance, the interlinking of the separate food chains initiated by the berries and plantains (at the level of the producers) gave rise to the food web as illustrated in the diagram. In addition, a separate food chain was also started at the level of the primary consumer by the butterfly, greenfly, grasshopper and titmouse since they all fed on the berries.
The instance below shows the food chain initiated by the greenfly at the level of a primary consumer:
Berries >> Greenfly >> Ladybird >> Dragonfly >> Frog >> Snake >> Buzzard.
The above instance is another food chain although it has some links with the first food chain (in explanation 1).
Note: It is this linking of food chains that gives rise to a food web.
You can attempt Len Academy questions and answers here
EXPLANATION 3:
A food web shows multiple food chains or multiple feeding relationships or multiple feeding connections all linked together.
Understand that a food web always consist of more than one food chain (at least, a minimum of 2 food chains linked together).
You can read on the bones of the human skeleton here
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 10 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
99% of a panda's diet is bamboo. They may eat fish or other small animals occasionally
When attacked by insects, lima beans plant will often command parasitic wasps to their defence.
When the leaves of the lima bean's leaves are eaten by insects, the plant gives off a substance that signals parasitic wasps to swam in, destroying its enemies (the leaf-eating insects) in the process
Frogs drink water through their skin
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
NOTABLE POINTS IN Biology
For a thing to be considered living, it must possess all the basic characteristics of life. These include:
Movement
Respiration
Nutrition
Irritability or Sensitivity
Growth
Excretion
Reproduction
Death
Adaptation
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
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:
Bios: means life.
Logos: means knowledge or to study.
Biology can therefore be defined as 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:
Movement
Respiration
Nutrition
Irritability or Sensitivity
Growth
Excretion
Reproduction
Death
Adaptation
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
It is noteworthy to state that plants are the only orgnisms that take away CO2 from the atmosphere
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