WAEC GCE Biology Answers 2019 for Essay & Obj Questions

WASSCE Biology MAY/JUNE  2019 (SSCE WAEC MAY/JUNE 2019 BIOLOGY)

1. Which of the following structure will not be found in the nucleus of a cell.

A. DNA

B. Nucleolus

C. Lysosome

D. Centriole

2. An example of organ level of organization is

A. bird

B. Kidney

C. spermatozoon

D.  Xylem

3. A structural similarity between Paramecium and Amoeba is the presence of

A. one food vacuole

B. two contractile vacuole

C. two nuclei

D.one gullet

4.  The classes of plants the root systems in diagram I and II below represent respectively are

 

 

 

A. Dicotyledoneae and Monocotyledoneae

B. Monocotyledoneae and Dicotyledoneae

C. Dicotyledoneae and Dicotyledoneae

D. Monocotyledoneae and Monocotyledoneae

 

The diagram below is an illustration of a stage in a biological process. Study it and answer question 5 and 6

 

 

 

 

 

5. What stage of cell division is illustrated in the digram

A. prophase

B. Metaphase

C. Anaphase

D. Telophase

6. The part labelled I is the

A. centromere

B. Spindle fibre

C. centriole

D. chiamata

7. The rate of diffusion of molecules between two media will be higher if

A. the difference of concentration of the two media is low

B. the difference in concentration of the two media is negligible

C. the difference in concentration of the two media is high

D. there is no difference in the concentration of the two media

8. Anaerobic respiration in the organism illustrated in the diagram below produces carbon dioxide and

 

 

 

 

 

A. ethanol

B. water

C. oxygen

D. glucose

9.  Underground storage stems which grow horizontally in the soil are

A. bulbs

B.  runners

C.  rhizomes

D. corms

10. Muscles fatigue in the body of an athlete is due to

A. low pH

B. high oxygen content

C. accumulation of lactic acid

D. accumulation of carbonic acid

 

11.  The heart can beat continuous without being fatigued because it is composed of

A. Skeletal muscles

B.  Smooth muscles

C. cardiac muscles

D. renal muscles

12. The product of tissue respiration are

A. glucose, oxygen and water

B. Oxygen, water and energy

C. glucose, carbon dioxide and energy

D. water, carbon dioxide and energy

13. Excretory products in plants responsible for decolouration of flowers are called

A.  alkaloid

B. tannins

C. anthocyanins

D. resins

14. The process of maintaining a steady internal environment is known as

A. osmoregulation

B. equilibrium

C. homeostasis

D. plasmolysis

15.  Which of the following statement is not true about hormones?

 A. Their responses are voluntary

B.  They may affect more than one target organs

C. They are chemical messengers in animals

D. They are transported by the blood of the target organs

The diagram, below is an illustration of human brain. Study it and answer question 16 and 17

 

 

 

 

 

16.  The part labelled is the

A. Olfactory lobe

B. cerebellum

C. cerebrum

D. medulla oblongata

17. The function of the part labelled II is that it controls

A. posture and balance of the body

B. all voluntary actions

C. temperature and appetite

D. many involuntary actions

 

18. To focus on a distant object, the ciliary muscle of the eye

A. contracts and the eye lens get thicker

B. relaxes and the eye lens get thinner

C. contracts and the eye lens get thinner

D. relaxes and the eye lens gets thicker

 

19. The main function of the amniotic fluid is for

 A. respiration in the foetus

B. protection of the foetus from shock

C. lubricating the birth canal

D. nourishing the foetus

 

The diagram below is an illustration of the longitudinal section of a flower . Study it and answer question 20 and 21.

 

 

 

 

 

20. Which part of the flower is responsible for the protection of young flower buds

A. I

B.  II

C.  III

D. IV

21. The essential parts of the flower are labelled

A. I, II and III

B. II, III and IV

C. III, V and  VI

D. IV, V and VI

 

22. Deficiency in insulins would lend to

A. cirrhosis

B. hepatitis

C. diabetes

D. nephrities

23. Which of the following forms of energy is utilized during photosynthesis?

A. Potential

B. Kinetic

C. Solar

D. Chemical

24. Light is excluded from water culture experiment in order to

A. prevent overheating of the roots

B. enable the roots of grow straight

C. prevent ionization of water moleculues

D. prevent the growth of algae

25. The major mineral present in the shell of Molluscs is

A. Small intestine

B. stomach

C.  large intestine

D. Mouth

26.  The digestion of proteins starts in the

A. small intestine

B. Stomach

C. large intestine

D. Mouth

27. Tooth decay is usually caused by  

A. undigested and absorbed food

B. eating limited amount of sweetened food

C. the bacteria in the mouth that metabolize sugar to acid

D. eating a lot of proteinous foods

28. The conversion of ammonium salts into nitrates is called

A. putrefaction

B. denitrifration

C. fixation

D. nitrification

29. The salinity of a brackish habitat

A. increase immediately after rainfall

B. increase at the end of the rainy season

C. decrease with an increase in the number of organisms

D.  increase during the dry season

30. If 90 ants are found in a field with a total area of 100m2. What is the population density of the ants

A. 0.09

B. 0.90

C. 9.00

D. 90.00

31. The complex relationship between the members of a community and their physical environment is known as

A. commensalism

B. symbiosis

C. saphrophytism

D. ecology

32. The specific role of a species within its environment is known as its

A. habitat

B. niche

C. trophic level

D. biotic community

33. Which of the following soil fertility improvement methods will have the most negative effect on the ecosystem if not controlled

A. Application of N.P.K fertilizer

B. shifting cultivation

C. Mixed farming

D. Crop rotation

34. Organism in an ecosystem are usually grouped according to their trophic level into

A. carnivores and omnivores

B. consumers and parasites

C. producers and saprophytes

D. producers and consumers

 

35. In the pyramid of energy illustrated below, the organism with the least amount of transferred energy is

 

 

A. Spirogyra

B. tadpole

C. fish

D. bird

36. Tall trees with unbranched trunks which grows above the upper storey of the forest are commonly referred to as

A. emergent

B. herbs

C. lianes

D. shrubs

37. maize grains are best stored against insect attacks by

A. keeping in a silo

B. storing in the room

C. leaving them on their cobs

D. covering with leaves

38. Cholera is mostly spread by

A. air

B. soil

C. water

D noise

39. Which of the following resources is renewable

A. petroleum

B. coal

C.  Iron

D. Trees

40. Which of the following roles is not performed by a government agency responsible for forest maintenance?

A. Regulating the harvest of timber and poaching

B. Creating, protecting and managing the forest reserves

C.  Tracking the movement of timber, wood and wildlife

D. Regulating mining activities in the forest

41. Which of the following factors is not a source of variation in living organism

A. Environment

B. Inheritance

C. Mitosis

D. Melosis

42. Individuals with blood group AB can donate blood to individual with blood groups(s)

A. A and B

B.  A and O

C.  AB

D. O only

The diagram below is an illustration of a process occurring in a living organism animal cell. Study it and answer question 43 and 44

 

 

 

 

43. The process occur in the

A. nucleus

B. mitochondrion

C. Golgi body

D. cytoplasm

44. The process is called

A. replication

B. cell maturation

C. crossing over

D. mutation

45. Which of the following nucleotides is not found in the DNA molecule?

A. Adenine

B. Cytoline

C Guanine

D. Uracil

46. In a complete dominance monohybrid cross between a pure breeding, yellow flowered plant Y and a pure breeding white flowered plant y, the result of the first filial generation is

A. 50% yellow flowers

B. 75% yellow flowers

C. all yellow flowers

D. all white flowers

 

47. A man whose blood group is heterozygous  B is married to a woman whose blood group is also heterozygous B. Which of the following statement is correct about the blood group of their four offspring?

A. Three of them belong to blood group B

B. Three of them belong to blood group O

C. None of them belong to blood group O

D. Two of them belong to blood group O

48. The cross between RrTt and rrtt where R is gene for red colour and T for tallness will result in

A. all the offspring being tall with red fruits

B. 25% tall and red fruits

C. 50% tall with red fruits

D. 75% tall with red fruits

49. The yellow and black stripes on the body of wasps is an example of

A. mimicry

B. courtship behavior

C.  camouflage

D. warning colouration

50. The biological importance of the dance by the worker honeybee is that it

A. acts as a signal for mating

B. serves as warning signal

C. signals the availability of food

D. serves as a means of identifying members of the caste.

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