WAEC 2022 Biology Essay & Objectives Answers.

 WAEC Biology Objects and Essay Answers 2022 

Questions & Answers 

 

 Biology 1 ( Ideal) – 1110 am – 1200noon 

 

 2022 WAEC BIOLOGY Objects (OBJ) ANSWERS 

 Answers Loading … … … … … … … … …. 

 

 

 

 

 1-10 CBABDABCDB 

 11-20 CDDACBBAAB 

 21-31 CBCCCBABAD 

 31-40 BCDCDDBDDA 

 41-50 BDADCABCDD 

 

 2022 WAEC BIOLOGY ESSAY OR Proposition ANSWERS 

 (1a) 

 (i) Tube 

 (ii) Red blood cell 

 (iii) White blood cell 

 (iv) Platelets 

 

 1b) 

 (i) Tube 

 (ii) White blood cells 

 (iii) Red blood cells 

 (iv) Platelets 

 (v) Red blood cells 

 (vi) Platelets 

 (vii) White blood cells 

 

 (1c) 

 (i) Amino acids 

 (ii) Glucose 

 (iii) Mineral mariners and water 

 

 (1d) 

 (i) Anemia 

 (ii) Haemophilia 

 (iii) Blood clots 

 (iv) Leukemia 

 

 (1e) 

 Complaint of the blood is dangerous because it can lead to other issues and accordingly death. 

 

 (2a) 

 Dentition refers to the development of teeth and their arrangement in the mouth of creatures. 

 

 

 

 (2b) 

 The tooth consists of three main portions videlicet The crown, neck and root. The crown is above the spa, covered with a white hard substance called enamel. The short neck is covered with goo. The root is bedded in the jaw bone by a substance called cement or cementum 

 

 (2c) 

 (i) Proteins 

 (ii) Fats 

 (iii) Cellulose 

 

 (2d) 

 Draw the illustration 

 

 

 1105 am,10/09/2021) Fullclub (3a) 

. IN A TABULA FORM 

 

 DECOMPOSER 

-Bacteria 

-Mushroom 

- Mucor 

 

 Patron 

-Water lettuce 

-Water splint 

-Algae Lema 

 

 CONSUMER 

- Canine 

-Tadpole 

- Cat 

( 3b) 

 (i) CO ₂ 

 (ii) Water 

 (iii) Energy 

 (iv) Factory Nutrients 

 

 (3bii) 

 (i) Decomposer help accumulation of dead organisms 

 (ii) Increase soil fertility 

 (iii) Helps to break down biodegradable particulars 

 

 

 

 (3c) 

 (i)Non-biodegradable item 

 (ii) Essence 

 (iii) Bones 

 (1106 am,10/09/2021) Fullclub (3a) 

. IN A TABULA FORM 

 

 DECOMPOSER 

-Bacteria 

-Mushroom 

-Mucor 

 

 Patron 

-Water lettuce 

-Water splint 

-Algae 

-Lemna 

 

 CONSUMER 

- Canine 

-Tadpole 

- Cat 

 

 (3b) 

 (i) CO ₂ 

 (ii) Water 

 (iii) Energy 

 (iv) Factory Nutrients 

 

 (3bii) 

 (i) Decomposer help accumulation of dead organisms 

 (ii) Increase soil fertility 

 (iii) Helps to break down biodegradable particulars 

 

 

 

 (3c) 

 (i)Non-biodegradable item 

 (ii) Essence 

 (iii) Bones 

 

 

 

 further Answers loading … 

 

 The questions below are the WAEC Biology Questions. Go through them and be ready to score grandly in your WAEC 2021 Biology Examination. 

 

 1. The scientist who introduced binomial title in the bracket of organisms was 

 

A. Charles Darwin 

 

B. Carolus Linnaeus 

 

C. John Ray 

 

D. Louis Pasteur 

 2. Which of the following statements is true about arthropods? 

 

A. Prothorax bears only legs 

 

B. Mesothorax bears only legs 

 

C. Metathorax bears only bodies 

 

D. Prothorax bears only bodies 

 

 3. What position of association is Spirogyra? 

 

A. Organ system 

 

B. Organ 

 

C. Cell 

 

D. Towel 

 

 4. The streaming movement of cytoplasm within paramecium is known as 

 

A. Transpiration 

 

B. Digestion 

 

C. Cyclosis 

 

D. Osmosis 

 

 5. Which of the following organelles is plant only in factory cells? 

 

A. Mitochondria 

 

B. Ribosomes 

 

C. Lysosomes 

 

D. Plastids 

 

 6. Active transport differs from prolixity in that active transport 

 

A. Is a veritably fast process 

 

B. Allows the movement of substances against attention grade 

 

C. Takes places in both light and dark responses of photosynthesis 

 

D. Occurs in both factory and beast apkins. 

The plates below are illustration of an experimental set-up to demonstrate a type of tropic response in shops. Study them and answer question 7 and 8 

 

 waec biology questions and answers 

 7. The type of response demonstrated is 

 

A. Phototropism 

 

B. Geotropism 

 

C. Hydrotropism 

 

D. Thigmotropism 

 

 8. The conclusion drawn from the trial is that 

 

A. Shoots of shops are negatively thigmotropic. 

 

B. Shoots of shops are negatively geotropic. 

 

C. Leaves of shops are appreciatively phototropic. 

 

D. Roots of shops are appreciatively hydrotropic. 

 

 9. The odontoid process is plant on the 

 

A. Axis backbone 

 

B. Atlas backbone 

 

C. Thoracic backbone 

 

D. Sacral backbone 

 

 10. A seedling was made to stand in a result of red essay for three hours and a transverse section of the stem was examined under the microscope. The process being delved was 

 

 A. The significance of micro rudiments of shops. 

 

B. Ascent of water through the xylem. 

 

 C Prolixity of coloured substances. 

 

D. Distribution of food in shops. 

 

 11. Which of the following structures would carry out respiration? 

 

A. Germinating cowpea. 

 

B. Decolorized splint 

 

C. Dry splint. 

 

D. Boiled cowpea 

 

 12. Which of the following substances isn't an excretory product of creatures? 

 

A. Carbon dioxide 

 

B. Urea 

 

C. Sweat 

 

D. Oxygen 

 

 13. An illustration of homeostasis in living organisms is 

 

A. Cooling effect performing from evaporation of water from the body face. 

B. Root hairs of a factory growing toward a source of light 

 

 

 

C. Changing of the body colour of trimmer to match the colour of the leafage on which it's resting. 

 

 D. The release of phosphorus into the phloem of a factory growing in a phosphorus-deficient soil 

 

 14. Ultrafiltration in the order takes place in the 

 

A. Renal tone 

 

B. Medulla 

 

C. Loop of Henle 

 

D. Bowman’s capsule 

 

 15. The thyroid gland is located at the base of the 

 

A. Midbrain 

 

B. Order 

 

C. Neck 

 

D. Liver 

 

 16. Which of the following statements about the response of neurons to encouragement is correct? 

 

A. Neurones respond to encouragement of any strength. 

 

B. Neurones respond to all stimulants applied in rapid-fire race. 

 

C. Neurones respond more fleetly during the absolute period. 

 

 

 

D. Intensity of encouragement must reach a threshold value before the neurones can be agitated. 

 

 17. Which of the ensuing practices may lead to infection of the eye? Use of 

 

A. Contact lenses 

 

B. Convex lenses 

 

C. Biconcave lenses 

 

D. Concave lenses. 

 

 18. The structures for gassy exchange in breathing roots are 

 

A. Stomata 

 

B. Lenticels 

 

C. Cuticles 

 

D. Mitochondria 

The illustration below is an illustration of the life cycle of an nonentity. Study it and answer question 19 and 20 

 

 waec biology 

 19. The adult nonentity in this life cycle is 

 

A. Housefly 

 

B. Butterfly 

 

C. Cockroach 

 

D. Mosquito 

 

 20. The naiad is also known as 

 

A. Nymph 

 

B. Maggot 

 

C. Caterpillar 

 

D. Chrysalis 

 

 21. The source of energy needed by shops during food product is 

 

A. Photosynthesis 

 

B. Chlorophyll 

 

C. Sun 

 

D. Microorganisms 

 

 22. One major difference between factory and beast nutrition is the capability of shops to synthesize 

 

A. Food for shops and creatures 

 

 B Water for shops 

 

C. Water for creatures 

 

D. Food for shops only. 

 

 23. By what process is bounce converted into maltose? 

 

A. Hydrolysis 

 

B. Condensation 

 

C. Translocation 

 

D. Photosynthesis 

 

 24. The ascent of water in altitudinous tree is substantially due to 

 

A. Adhesive forces 

 

B. Transpiration pull 

 

C. Root pressure 

 

D. Cohesive force 

 

 25. The duodenum of a person was surgically removed. Which of the following substances would have their digestion affected? 

 

A. Starch and protein only 

 

B. Starch and lipids 

C. Starch, protein and maltose 

. 

D. Starch, protein and lipids. 

 

 26. Which of the following dental formulae represents the dentition in rabbits? 

 

A.12/1 C0/0 P3/2 M2/3 

 

B.12/2 C1/1 P2/2 M3/3 

 

C. 1 ½ C0/0 P2/3 M3/3 

 

D.12/1 C0/1 P3/2 M3/3 

 

 The illustration below is an illustration of an experimental set-up to 

 

 Demonstrate a property of soil. Study it and answer question 27 and 28 

 

 waec biology questions and answers 

 27. The property of soil demonstrated is 

 

A. Flyspeck size 

 

B. Capillarity 

 

C. Colour 

 

D. Texture 

 

 28. Which of the following statements would be a correct observation at the end of the trial? Water moves 

 

A. Highest in flaxen soil 

 

B. Lowest in earthy soil 

 

C. To the same position in all soil types 

 

D. Highest in clayed soil. 

 

 29. The most important factor (s) that influence (s) the ecological niche of an organism is/ are the 

 

A. Water, light and bloodsucker- prey relationship. 

 

B. Food and water vacuity. 

 

C. Physical terrain. 

 

D. Competition for food and space 

 

 30. The illustration below is an illustration of organisms in an air-tight terrarium. The most important factor demanded by the organism is 

 

 waec biology exhibit 

A. Light energy 

 

B. Low moisture 

 

C. Oxygen 

 

D.Nitrate 

 

 31. Which of the following instruments is used to determine the turbidity of water? 

 

A. Hygrometer 

 

B. Hydrometer 

 

C. Secchi slice 

 

D. Rain hand 

 

32. In an ecosystem, the least effective energy transfer link is from the 

. 

A. Secondary consumers to putrefy. 

 

B. Sun to directors 

 

C. Primary consumers to secondary consumers. 

 

D. Patron to primary consumers. 

 

 33. Xerophytes have the following characteristics aimed at conserving water except 

 

A. Thick cuticleB. Broad splint shells. 

 

C. Sunken stomata 

 

D. Waxy cuticle 

 

 34. An association between living organisms in which one lives on and feeds at the charges of the other is known as 

 

A. Commensalism 

 

B. Predation 

 

C. Parasitism 

 

D. Mutualism 

 

 35. When large figures of organisms partake limited space and coffers, the immediate result is 

. 

A. Extermination 

 

B. Emigration 

 

C. Competition 

 

D. Immigration 

 

 36. Which of the following conditions is caused by a bacterium? 

 

A. Ringworm 

 

B. Poliomyelitis 

 

C. Syphilis 

 

D. Malaria 

 

 37. Conservation of wildlife is necessary substantially because 

 

A. Wild species can not repel conditions better than their tamed species. 

 

 

 

 B. Numerous bloodsucker wild creatures help in the control of pests 

 

 C. It prevents the extermination of species 

 

 D. Numerous people decide pleasure from observing wild creatures. 

 

 Two conscious patient X and Y whose blood group genotypes are AO and AB independently were transfused with blood from the same patron. Case X incontinently showed signs of difficulty in breathing while patient Y showed no negative response. 

 

 

 

 Use the information above to answer questions 38 and 39. 

 

 

 

 38. Case X and Y were likely transfused with blood of genotype 

 

A. OO 

 

B. AO 

 

C.BO 

 

D. AA 

 

 39. What should the sanitarium have done to help patient X from showing the symptom described over? Case X should have 

 

A. Undergone an cohesion test 

 

B. Been asked for the blood group. 

 

C. Been screened for HIV 

 

D. Undergone malaria test. 

 

 40. The topmost donation to inheritable studies was made by 

 

A. Gregor Mendel 

 

B. Thomas Morgan 

 

C. Charles Darwin 

 

D. Robert Hooke. 

 

 41. The exchange of genes between homologous chromosomes is called 

 

A. Crossing over 

 

B. Back cross 

 

C. Test cross 

 

D. Mutation 

 

 The plates below are illustration of the heritage of fleece in mice. J, K, L, M and N are parents. The crosses between two parent mice gave rise to seed P, Q, R andS. study the illustration and answer question 42 and 43 

 

 2020 biology questions and answers 

 42. Which parent mouse is heterozygous for fleece colour, 

. 

A. M 

 

B. J 

 

C. K 

 

D. L 

 

 43. Which of the seed are all homozygous? 

 

A. P 

 

B. Q 

 

C. S 

 

D. R 

 

 44. Genes that remain linked are those 

 

A. Close to each other on the chromosomes. 

 

B. On the same locus on the chromosomes 

 

C. On the homologous chromosomes 

 

D. Which are allelic brace 

 

 45. A factory cell has 14 chromosomes previous to mitosis. What's the number of chromosomes in the son cells? 

 

A. 14 

 

B. 56 

 

C. 28 

D. 7 

 

 46. The chemical bonds the bases of the two beaches of DNA together is 

 

A. Oxygen 

 

B. Hydrogen bond 

 

C. Electrovalent bond 

 

D. Covalent bond 

 

 The illustration below is an illustration of one of the propositions of elaboration. Study it and answer questions 47 and 48 

 

 waec biology answers 

 47. Who proposed the proposition in the illustration? 

 

A. Louis Pasteur 

 

B. Gregor Mendel 

 

C. Robert Hooke 

 

D. Jean Lamarck 

 

 48. The proposition supports 

 

A. Struggle for survival 

 

B. Natural selection 

 

C. Independent multifariousness. 

 

 D. The use and desuetude of body corridor 

 

 49. In elaboration, fuds are naturally saved in 

. 

A. Rocks 

 

B. Water 

 

C. Chemicals 

 

D. Trees 

 

 50. Which of the following insects isn't a social nonentity? 

 

A. Termite 

 

B. Housefly 

 

C. Housefly 

 

D. Ant 

 

Note: This are related/ repeated questions from WAEC.