The West African Examinations Council (WAEC) is one of the most important exams in West Africa. It is taken by millions of students every year, and the Biology practical exam is one of the most challenging parts of the exam.
How to Prepare
The best way to prepare for the WAEC Biology practical exam is to study the relevant theory. You should also practice performing experiments and observations.
There are a number of resources available to help you prepare for the WAEC Biology practical exam. You can find textbooks, online resources, and even practice exams.
2023 WAEC BIOLOGY PRACTICAL SPECIMEN LISTED BELOW
Specimen A – Mature fresh eggs of catfish
Specimen B – Fresh egg of domestic fowl (raw, with shell intact)
Specimen C – Picture/model/chart of uterus containing a foetus
Specimen D – Longitudinal section of an ovary of pride of Barbados flower
Specimen E – leaf of pride of Barbados flower DONE
Specimen F – Panicum plant/Guinea grass (whole plant)
Specimen G – Cocoyam plant/Caladium plant (whole plant)
Specimen H – Corm of cocoyam
Specimen J – Dry humus in a beaker
Specimen K – Moist humus in a beaker
Specimen L – Ripe orange fruit (whole) DONE
Specimen M – Longitudinal section of coconut fruit DONE
Specimen N – Longitudinal section of fresh chill pepper fruit. DONE
2023 WAEC BIOLOGY PRACTICAL ANSWERS IS PROVIDED HERE
SPECIMEN L – RIPE ORANGE FRUIT (WHOLE)
The botanical name for Specimen L is Citrus sinensis.
Classification of Specimen L
It is classified as a type of fleshy fruit
Kingdom
Plantae
Clade
Tracheophytes
Clade
Angiosperms
Clade
Eudicots
Clade
Rosids
Order
Sapindales
Family
Rutaceae
Genus
Citrus
Species
Citrus sinensis
Structure of Specimen L
It consists of three layers which are
Epicarp
Mesocarp and
Endocarp
Economics Important of Specimen L
Nutritional Value
Disease Prevention
Food and Beverages
Employment
Mode of dispersal of specimen L
Human Activities Animals Water Wind
Explanation In case you want it.
Human Activities: Oranges are cultivated and transported by humans for consumption and sale. This is the most common mode of dispersal for oranges.
Animals: Wild oranges may be dispersed by animals that feed on their fruits. Birds and mammals, such as bats, may eat oranges and then disperse the seeds in their feces, allowing for the germination and growth of new orange trees.
Water: Oranges may also be dispersed by water. Seeds that fall into rivers or streams may be carried downstream and eventually germinate in new locations.
Wind: While wind dispersal, it is possible for seeds to be carried short distances by wind, allowing for the establishment of new trees.
Source of Food of Specimen L
Vitamin C
Characteristics of Specimen L
They have a pleasant aroma
The skin colour of Specimen L range from green to yellow.
Specimen L can be easy press with your thumb.
The flesh of specimen L is juicy, pulpy, and segmented, with a sweet and tangy flavor.
The Seeds of specimen L contain small, white seeds that are edible but are usually not consumed.
Specimen LDiagram: Whole Section of Ripe Orange
Transverse Section of Specimen L – Ripped Orange
Specimen M – Longitudinal section of coconut fruit
Botanical Name of Specimen M
The botanical name of specimen M is Cocos nucifera.
Classification of Specimen M
Coconuts are classified as fibrous drupes.
Structure of Specimen M
Exocarp, Mesocarp and Endocarp
N:B – type of fleshy fruit of specimen M is Dupe.
Economic Important Of Specimen M
Food
Coconut is a staple food in many tropical regions and is used in a variety of dishes, such as curries, soups, desserts, and beverages. It is also a rich source of oil, which is used in cooking, food processing, and as an ingredient in many cosmetic and pharmaceutical products.
Agriculture
Coconut plantations provide a source of livelihood for many people, particularly in developing countries. Coconut farming generates employment opportunities for millions of farmers and laborers worldwide, and it is an important source of foreign exchange earnings for many countries that export coconut products.
Industry
The coconut industry is diverse and includes the production of copra, coconut oil, coconut water, coconut milk, desiccated coconut, and other coconut-based products. These products are used in various industries such as food, cosmetics, pharmaceuticals, and biofuels.
Trade
Coconut is a major commodity in international trade, and many countries rely on exports of coconut products as a source of revenue. The top exporters of coconut products include the Philippines, Indonesia, India, Sri Lanka, and Thailand.
Environmental benefits
Coconut trees are valuable for their ability to provide shade, prevent soil erosion, and improve soil fertility.
They also have a low carbon footprint, as they require minimal inputs and are sustainable crops that can be grown without the use of harmful pesticides or fertilizers.
Mode of Dispersal of Specimen M Man Animals Wind
Source of Food of Specimen M Vitamin B and Vitamin C
Characteristics of Specimen M
Hard, brown, fibrous outer shell.
Large, spherical shape with an average diameter of 10-12 inches and weight of 1-2 kilograms.
Edible, white, meaty flesh with a nutty flavor.
Three distinct layers: the outer shell, fibrous husk, and inner flesh containing coconut water and meat.
Specimen MDiagram – Longitudinal section of Coconut.
Structure of a coconut fruit
Specimen N – Longitudinal section of fresh chill Pepper
The botanical name of Specimen N:
Is called Capsicum Annuum chili peppers.
Classification of Specimen N
Classification
Information
Family
Solanaceae, also known as the nightshade family
Genus
Capsicum
It is classified as a type of Bery Fruit. Reason
Pepper is classified as a berry because it meets the botanical definition of a fruit that is a berry. A berry is a type of simple fruit that develops from a single ovary of a flower and has multiple seeds embedded in the flesh of the fruit.
Structure of Specimen N
It consists of three layers which are
Pericarp (Outer Layer)
Placenta (central structure containing seeds and capsaicinoids)
Seeds (mature ovules)
N:B – The type of fruit of specimen N is a fleshy berry
Economics Important of Specimen N
It has a high nutritive and medicinal value
Chili pepper is important because it is used in many cuisines around the world
it is a valuable export commodity
They are popular as an ornamental plant
Characteristics of Specimen N
Pungent taste and heat from capsaicin
Fruits can vary in color, from green to purple/black Fruits vary in shape and size
Plant size and growth habits vary depending on the variety and growing conditions.
Mode of dispersal of specimen N
Birds, such as sparrows, jays, and thrashers, are common dispersers of chili pepper seeds.
Mammals, such as men, squirrels, chipmunks, and rodents, can also consume and disperse chili pepper seeds.
Bats are also known to consume chili pepper fruits and can help disperse the seeds.
Specimen NDiagram: Longitudinal Section of Fresh Chill Pepper
FAQ
What are the most common mistakes that students make in the WAEC Biology practical exam?
What are some tips for performing well in the WAEC Biology practical exam?
What are the most important topics to study for the WAEC Biology practical exam?
What is the pass mark for WAEC Biology practical exam?
The pass mark for WAEC Biology practical exam is 50%.
What are the most important topics to study for WAEC Biology practical exam?
The most important topics to study for WAEC Biology practical exam include:
* Plant and animal identification
* Plant and animal structures
* Plant and animal behavior
* Conducting experiments
* Interpreting data
What are some tips for performing well in the WAEC Biology practical exam?
Some tips for performing well in the WAEC Biology practical exam include:
* Study the relevant theory thoroughly.
* Practice performing experiments and observations.
* Be familiar with the laboratory equipment.
* Read the instructions carefully.
* Take your time and answer all of the questions.
