Biology

Characteristics of Tropical Rainforest

len Alfred Ajibola - Fri, 10th January, 2020 @ 15:00: PM

Topics in Biology

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 Introduction to Biomes: What is a Biome? Importance of Swamp Forests


Academic Questions in Biology

Please check out our Test Your Knowledge page to see all Questions and Answers

Which of the following is a category of long bones?

  • A. Stunted long bones
  • B. Reduced long bones
  • C. Giant long bones
  • D. Bended long bones
  • E. Curved long bones
  • F. Elongated long bones

The end product of photosynthesis is _____.

  • A. O2
  • B. C​​​​​​2​​​​C5OH
  • C. H2​​​​​O
  • D. CO2
  • E. C6H12O6
  • F. C2H5COOH

The above diagram illustrates a _____.

  • A. Food Chain
  • B. Food Web
  • C. Food Pyramid
  • D. Food Link
  • E. Food Hub
  • F. Food zone

The living cells that makes up cartilages are called _____.

  • A. osteocytes
  • B. osteoblasts
  • C. osteoclasts
  • D. chondroblasts
  • E. chrondocytes
  • F. Osteoprogenitor cells

Which of the following statement is incorrect with regards to chitin?

  • A. Ecdysis is a term associated with chitin
  • B. It is a skeletal material
  • C. It is a type of skeleton
  • D. It is present outside the organism
  • E. It does not grow when the organism grows
  • It is present in ants

Which of the following is NOT a function of the human skeleton?

  • A. Gives Shape
  • B. Provides Protection
  • C. Aids in Locomotion
  • D. Supports Movement
  • E. Assists in Inhalation and Exahalation
  • F. None of the above
  • G. All of the above

Organisms that manufacture their own food through the help of sunlight or chemicals are best referred to as _____.

  • A. autotrophs
  • B. chemosynthetic
  • C. photosynthentic
  • D. chemoautotrophs
  • E. photoautotrophs
  • F. chemoautotrophs

Organisms that begins a food chain and also manufacture their food through photosynthesis are best referred to as _____.

  • A. heterotrophs
  • B. autotrophs
  • C. homotrophs
  • D. producers
  • E. photosynthetic
  • F. chemosynthetic

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Characteristics of Tropical Rainforest:

  1. As the name suggests, it rains throughout the year. The raining periods have 2 peaks.

    Note: Think of the peak as the times of highest rainfall within a year.

    The 2 peaks within the year (when we have the highest rainfall) are often referred to as the double maxima.

    Please read on the Introduction to Tropical Rainforest and its Importance here.


  2. The annual rainfall is over 2000mm.
    Please read on Desert Biome here.

  3. It’s overall temperature lie between 25oC – 37oC. There is a brief annual range of cold period with a temperature of 2oC – 3oC.
    Please read on the Importance Swamp Forests here.

  4. The tropical rainforest have a very high relative humidity.

  5. The tropical rainforest is a home to a large variety of animals. In fact, 80% of the known animal species are found here. Examples of animals found here include various reptiles, insects, birds and many more.

  6. The trees have broad and evergreen leaves.
    Please read on the Differences between Gymnosperms and Angiosperms here.

  7. The trees are heterogeneous. This implies that we have a great variety of trees here.

  8. Their soils are usually poor in nutrients. This is as a result of nutrients loss to erosion through a process termed leaching.
    Please read on Soil Erosion here.

  9. Nutrient recycling occurs at a high rate in the tropical rainforest. This is a function of abundant decomposers like bacteria, fungi and termites present on the soil.
    Please read on Sources, Functions and Deficiencies of Micronutrients here.

  10. The trees can be put into different layers, storey or canopies. These are:
    • Upper Canopy Trees
    • Middle Canopy Trees
    • Lower Canopy Trees
    • Bottom Canopy Trees
    You can read on Savanna and its Vegetation here

  11. Examples of trees found in the tropical rainforest include iroko, obeche, ebony and mahogany. These trees are a major source of hardwood.
    Please read on Hardwood and Softwood with their Characteristics here.

  12. Their trees possess buttress roots. Think of buttress roots as roots that spread apart on the surface of the soil and (usually does not penetrate deeply into the soil) because of the soil's poor nutrients.

  13. Plants such as climbers, creepers and epiphytes are very common in the tropical rainforest.
    Parasitic plants are commonly found here too.
    Please read on the Differences between Plants and Crops here.

Climbers and Creepers are regarded as plants in need of support as they grow. They are always 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.

Please read on Autotrophic Nutrition and Photosynthesis here.

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.

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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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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.

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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

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