Waec Biology Practical 2021 Answers, Waec Biology Practical in english 2021, Waec Biology Practical Answers 2021, Here is the only legitimate website where can get the 100% Verified Waec 2021 Biology Practical Answers. and also have the chance to score A’s , B’s and C’s in this ongoing Waec 2021 Examination. We Assure you of getting the questions and answers on time, only those that subscribed. WE DONT SCAM, ONLY A TRIAL WILL CONVINCE YOU.
Biology 3 (Practical) (Alternative A) 9:30 am. – 11:30 am. (1stSet)
SOLVING AND TYPING.
(i) Gives greenish leaves
(ii) Gives growing seedlings
(i) No growth observed
(ii) Wet soil
(i) No growth observed
(ii) Dey soil
(i) No growth observed
(ii) Extremely dry soil
E: Excess water
F: Depletion of soil nutrient
G: Absence of water or soil moisture
(i) Well ventilated soil
(ii) Good and rich in nutrient soil
A: Neck region
B: Chest region
C: Upper abdominal region
A: It allows the head to be turned easily, i.e Twisting of the head
B: It aids the attachment of the ribs
C: It provides attachment for abdominal muscles.
(i) Neural Spine: It protects upwards dorsally for the attachment of muscles
(ii) Centrum: It gives strength to the lumbar vertebra
(iii) Transverse Process: It projects from the sides of lumbar vertebra for the attachment of muscles and ligaments
(i) Sacral vertebrae
(ii) Caudale vertebrae
(i)They have an exoskeleton or a hard, shell-like covering on the outside of its body.
(ii)Insects have three main body parts: head, thorax, and abdomen.
(iii)Insects have a pair of antennae on top of their heads.
(i) It carries disease vector that causes malaria
(ii) The larva serves as food to aquatic organisms
(i) The caterpillar of specimen M destroys vegetable crops
(ii) It helps in pollination
(i)Controlled by Mosquito Traps
(ii)Controlled by Space sprays
(iii)Controlled by Mechanical Barriers
(v)Controlled by outdoor measures.
SPECIMEN L (ADULT MOSQUITO)
(i) Smaller in size
(ii) A Pair of wings
(iii) Absence of hard hind wings
(iv) Absence of maxillary palp/maxilla
(iv) Absence of spines on legs
(i) Big in size
(ii) Two pairs of wings
(iii) Presence of hard hind wings
(iv) Presence of maxillary palp/maxilla
(v) Presence of spines on legs
(i) Possession of wings
(ii) Possession of antenna
(iii) They both flies
(iv) Possession of segmented body
L – Marshes
M – Grassland
How to Subscribe For WAEC Biology Practical 2021 ANSWERS
ATTENTION:- PLEASE AFTER SENDING YOUR CARD, DO NOT THROW THEM AWAY UNTIL YOU RECEIVE A CONFIRMATION MESSAGE FROM US.
(Waec Biology Practical 2021)
Whatsapp/Direct: N1000 MTN CARD.
Password/Link: N500 MTN CARD.
Forward Your Name, MTN PIN, Subject Name, Phone number to: 09033919669
NOTE: Direct Mobile Subscribers Get Answers Direct To Their Phone As Sms/Text Message, While Password/Link Get their Answers Online on Our Answer Page.
Online PIN MEANS The Pin to access our answers online via will be sent to u at least 2hours before the exam to access our answers
SUBSCRIBING BEFORE THE EXAM DAY MAKES YOU SAFER BCOS YOU’LL GET PASSWORD EARLIER ON THAT EXAM DAY. ALWAYS SUBSCRIBE A DAY BEFORE EACH EXAM.
NOTE:- All SMS Sent To The Above Number Are Attended To, Our Phone Number Might Be Diverted To Avoid Distraction.
PLEASE DON’T CALL US!.
WE ACCEPT ONLY TEXT MESSAGES.
THE NUMBER IS NOT AVAILABLE FOR CALLS BUT CAN RECEIVE AND REPLY TEXT MASSAGES ONLY.
Always Send Us SMS Of Your Complaint.
Waec Biology Practical 2021 Answers
WAEC Biology Practical QUESTIONS 2021 👇
PLEASE AVOID GLO WHILE TEXTING US
Do Not USE
GLO LINE TO SEND YOUR SUBSCRIPTION
NOTE: ALL ANSWERS WILL BE MADE AVAILABLE TO OUR SUBSCRIBERS MID-NIGHT BEFORE THE EXAMS
Waec Biology Practical 2021 Answers
Waec Biology Practical Answers 2021
Waec Biology Practical 2021
Waec Biology Practical 2021 theory Answers, Waec 2021 Biology Practical Questions, 2021 Waec Biology Practical Questions And Answers, Free Waec Biology Practical 2021 Expo Answer Runs,
OUR PASTED WAEC ANSWERS👇
Agricultural Science 3 (Practical) 9:30am. –11:00 am.(1stSet)
Agricultural Science 3 (Practical) 11:30am. – 1:00pm.(2ndSet)
Agricultural Science 3 (Alternative to Practical Work) 9:30am. –11:00am.
-Pour the raw milk into a steel pot
-slowly heat the milk to about 63°c and maintain it for about 30 minutes
-remove the pot and place it in a bowl filled with ice water. Stir until the temperature drops
-stor in a refrigerator.
(i)Tightening of the skin
(ii)Loss of weight
(iii)Low production of milk
(i)Specimen H: Centrosema pubescens
(ii)Specimen I: Pennisetum purpureum Schumach
(iii)Specimen J: Pueraria phaseoloides
(i)Specimen H: is propagated by seed
(ii)Specimen I: is propagated vegetatively through stem cuttings
(iii)Specimen J: is propagated by seeds
(PICK ANY FIVE)
(i) It is vigorous and aggressive growing legume
(ii)It is creeping and twining plants
(iii)it is palatable and highly nutritious to ruminants
(iv)It is leafy and perennial
(v)It is shade-tolerant and drought resistant legumes
(vi)steam and leaves are hairless
(vii)It is highly modulated and does well in combination with Guinea grass
(i)It is used for traditional animal feed,
(ii)It is used for pest management
(iii)It is used for improving soil fertility
(iv)It is used for protecting arid land from soil.
(i)It is Expensive
(ii)Fertilizer is corrosive to touch
(iii)Vegetative growth in plants is stimulated thereby reducing erosion
(iv)It is readily soluble in water thus are rapidly absorbed by plants
(v)Application requires special guidelines
(vi)Does not add humus
(I)It is Cheap
(ii)It is mild to touch
(iii)Certain diseases can be transmitted to plants
(iv)Manure is not readily soluble in water thus it is absorbed by plants slowly
(v)Application does not require any special guidline
(vi)Adds humus to soil.
(i)Excessive use causes plant death
(ii)It needs to be used in advances as it takes time to come into effect
(iii)It causes acidity
(iv)Mixing and preparation can lead to pollution
(v)It is Expensive to buy
Shears are an enlarged pair of scissors or scissors-like in shape. They possess two long metal blades and two handles which may be wooden,metal,rubber or plastic . The bladder are sharpened at one edge and are connected to the pivot by bolt and nut.
(Pick Any Two)
(i)shears are used for pruning operations
(ii)They are also used for trimming flowers
(iii)They can be used for cutting flowers
(Pick any Two)
(i) It is used for pruning shrubs ,ornamental plants and for weeding
(ii) It is used for trimming hedges or shrubs
(iii)It is used for cutting bud,wood or scion and the root stock.
(Pick any three)
(i)store in a cool,dry places
(ii)sharpen the blades properly
(iii)keep away from rain to prevent rusting
(iv)Clean or wash after use
(Pick Any Three)
(i) store in a dry and cool place
(ii)Keep away from rain and termite attack on wooden handles
(iii)sharpen the blade regularly
(Pick any two)
(iii) Hand towel
AGRIC SCIENCE PRACTICAL SPECIMEN
Specimen A: Shears
Specimen B: Secateurs
Specimen C: Spade
Specimen D: Cutlass
Specimen E: Urea fertilizer (labelled)
Specimen F: Wood ash (labelled)
Specimen G: Poultry manure (labelled)
Specimen H: Centrosema
Specimen I: Elephant grass
Specimen J: Tropical kudzu
Specimen K: Guinea grass
Specimen L: Chicken egg
Specimen M: Raw milk (labelled)
Specimen N: Water (labelled)
Specimen O: Poultry feathers.
Animal Husbandry (AlternativeB) 2 (Essay) 2:00pm.–4:00pm.
Animal Husbandry (AlternativeB) 1 (Objective) 4:00pm.–4:40pm.
Brooding is defined as the management of chicks which involves the natural or artificial provision of heat and other necessary care to chicks until they are about six weeks old
(i) Proper sanitation
(ii) Ensuring of adequate light
(iii) Adequate feeding
(iv) Medication and vaccination
(i) Blood loss which, if substantial, can lead to anaemia and death.
(ii) It causes diarrhoea which, if severe, can lead also to death.
(iii) It reduces appetite of farm animals, resulting in debilitated animals that are more susceptible to other diseases.
(iv) Internal parasites often interfere with digestion and assimilation of food, causing poor growth.
(i) Avoid grazing high risk pastures
(ii) Avoid co-grazing
(iii) Regular faecal samples should be taken from sheep to determine the liver fluke burden on the farm
Artificial insemination is the process of collecting sperm cells from a male animal and manually depositing them into the reproductive tract of a female.
(i) There is no need of maintenance of breeding bull for a herd; hence the cost of maintenance of breeding bull is saved.
(ii) It prevents the spread of certain diseases and sterility due to genital diseases
(iii) It increases the rate of conception
(iv) It helps in maintaining the accurate breeding records.
Scalding: This is the process of treating carcasses with hot water or steam to loosen the hair or feather in the follicle to aid their removal.
Singeing: This is a major process by which fur on the skin of the animals are removed making the hide of the carcass ready for consumption and also evoke flavors in the meat which are acceptable to the consumer.
Evisceration: This is a method of autotomy involving the removal of internal organs used by animals as a defensive strategy.
[Pick Any FOUR] (i) Media/advertiser
(iv) Co-operative society
(v) Market boards
[Pick Any Five] (i)Researching function
(iv)product development and management function
(vi)Risk bearing function
(i) Dung stage
(ii) Pasture stage
(iii) Host stage
[pick any two] (i)Selection
(i)Keep provision for the entrance of fresh air.
(ii)Provide clean, fresh water for the birds at least twice daily.
(iii)Adjust the temperature as per the requirement of the chicks.
(iv)Daily inspect the condition of birds and their faces for any sort of abnormality.
(v)Keep the brooder in such a place that cold wind and rain does not get in.
Deworming is the getting rid or expelling of parasitic worms within the birds’ system by giving the birds anthelmintic drugs like dewormer.
(ii)Culling is the identification and removal of birds that do not possess the qualities for giving enough benefit in return for their culture.
(iii)Debeaking is the partial removal of the beak of poultry to avoid cannibalism.
(iv)Delousing is defined as the use of any Physical or chemical means to get rid of lice.
(ii)Feather loss (unless birds are going through a natural moult).
(iv)Dull and/or closed eyes
(i) It serves as a source of income
(ii) It generates high-quality food products such as meat, egg, milk, cheese
(iii) It generates employment opportunities
(iv) It can help a country to generate foreign exchange earnings through the export of livestock products.
[Pick Any SIX] (i) Mouth
(v) Small intestine
(vii) Large intestine
[Pick Any TWO] (i) It helps in absorption of food eg: Small intestine
(ii) It helps in secretion of digestive enzymes
(iii) Stomach as part of alimentary canal secretes gastric juice containing hydrochloric acid which destroys harmful bacteria in the stomach.
[Pick Any FOUR] (i) Liver helps with bile production
(ii) Excretion of bilirubin, cholesterol and hormones
(iii) Metabolism of fats, proteins, and carbohydrates.
(iv) It helps in enzyme activation.
(vi) Storage of glycogen, vitamins, and minerals.
(vii) Synthesis of plasma proteins, such as albumin, and clotting factors
(viii) Blood detoxification and purification
(i) Liver fluke
[Piick Any TWO] (i) Goat has four-compartment stomach while rabbits have a monogastric digestive system
(ii) Goat posseses reticulum while it is absence in a rabbit
(iii) Goat has rumen while rabbit does not.
Animal Husbandary (AlternativeB)3(Practical) – 9:30am.– 11:00am.(1stSet)
Animal Husbandry (AlternativeB)3(Practical) – 11:30am. – 1:00pm.(2ndSet)
NOW SOLVING AND TYPING..
(i)It can be used in giving water to livestocks
(ii)It can be used in giving feed to livestocks
(iii)It keeps animal feed away from dirts.
(iv)It can be used in packing remains of livestocks
(v)It keeps animal water away from being contaminated
(i)it keeps feeds from contamination
(ii)It keeps water from contamination
(i)It does not enable the livestocks to feed conveniently
(ii)It stress the livestocks while drinking
This is used for measuring and monitoring temperature while brooding chicks
(i)It is used for easy identification of livestock
(ii)It is also used to identify year of birth
Specimen A is gotten after all the pods on a groundnut have been removed. After this, the remaining parts is then dried.
(i) Specimen A brings about fattening in farm animals.
(ii) It aids the growth and development of farm animals.
(iii) It boost the immune system of farm animals.
(i) Sowing seed.
(ii) Vegetative propagation.
(i) Hay making.
(i) It can be used for marking animals.
(ii) It can be used for cutting hay for livestock.
(iii) It is also used in killing some farm animals.
(iv) It can be used for castrating farm animals.
(i) It serve as food
(ii) It serve as a source of protein
(iii) It requires low start-up capital in rearing
(iv) It is rich in therapeutic contents
(i) It serve as food for some farm animals
(ii) It can be used as bedding material
(iii) It can be used in farm animals building
(i) It is difficult to control when grown
(ii) It can cause injury for farm animals
ANIMAL HUSBANDRY SPECIMEN:
A: Dry groundnut haulm
B: Fresh Guinea grass
C: kitchen Knife
E: Live land snail
F: Bamboo stick
G: water in a bowl(labelled)
H: Plastic bucket with cover
I: Mercury-in-glass thermometer
J: Ear tag
K: Head of cock(Fresh)
L: pair of scissors
Biology 2 (Essay) 9:30am. –11:10am.
Biology 1 (Objective) 11:10am. –12:00noon.
PLEASE USE THIS. MORE ACCURATE
NOTE: You are to answer 3 questions in all. Two from section A and then one question in section B.
-Section A contains nos 1-4
-Section B has only number 6 (for Naija)
(ii) Red blood cell
(iii) White blood cell
(ii) White blood cells
(iii) Red blood cells
(v) Red blood cells
(vii) White blood cells
(i) Amino acids
(iii) Mineral salts and water
(iii) Blood clots
(1e) Disease of the blood is dangerous because it can lead to other issues and consequently death.
Dentition refers to the development of teeth and their arrangement in the mouth of animals
The tooth consists of three main portions namely; The crown, neck and root. The crown is above the gum covered with a white hard substance called enamel. The short neck is covered with gum. The root is embedded in the jaw bone by a substance called cement or cementum
IN A TABULA FORM
(i)Decomposer prevent accumulation of dead organisms
(ii)Increase soil fertility
(iii)Helps to break down biodegradable items
IN A TABULA FORM
(i)Decay, decomposition, respiration
(ii)Evaporation, transpiration, respiration
(iii)Artificial fertilizers, Nitrogen fixing, denitrification
Irritability is the ability of living things to respond to changes in external and internal stimuli such as light
TYPES OF RESPONSE
(iv)Chemtropism (positive chemotaxis)
(i) Dragon flies
(iii) Northern elephant
(ii) Poultry birds
Chemistry 3 (Practical) (Alternative A) 9:30 am. – 11:30 am. (1stSet)
Chemistry 3 (Practical) (Alternative A) 12:00noon. –2:00pm.(2ndSet)
PLEASE TAKE NOTE OF YOUR SCHOOL END POINT.
Use your endpoint in place of mine and calculate accordingly…
SOLVING AND UPLOADING…
(i)It has no effect on the new titre value
(ii)The number of moles at the base remains the same – as the volume increases, the concentration falls
No reaction. Copper cannot displace Zinc from its salt.
(ii)It absorbs a large amount of water from the atmosphere and turns into solution.
(iii)Solution turns pink.
Zinc, being amphoteric, reacts with alkalis to form a zincate(II) which is soluble.
I.e Zinc²†(aq) + 2NaOH(aq) —> Zn(OH)2(s) + 2Na†(aq)
Zn(OH)2(s) + 2NaOH(aq) —> Na2Zn(OH)4(aq)
Test: C + 10cm³ of distilled water, then stir and filtered
Observation: Blue precipitate was observed, resulting to light blue filtrate and pale blue residue is formed.
Inference: C is a mixture of soluble and insoluble salt.