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JAMB Biology Questions And Answers 2023

JAMB Biology Questions And Answers 2023, For UTME Candidates preparing for the JAMB Biology Exam in 2023, particularly those interested in Medicine, Pharmacy, and other Health Science courses, we have curated authentic Biology questions and answers. Your task is to thoroughly review and study these materials, ensuring you are well-prepared to excel in your Biology paper. Good luck!

What are JAMB Biology Questions and Answers 2023

Anticipate encountering the JAMB Biology Questions and Answers 2023 during your upcoming Biology paper in the 2023 UTME. Familiarizing yourself with these questions is crucial for all candidates preparing for the 2023 JAMB examination.

By doing so, candidates will gain insight into the type of questions they can expect in the JAMB CBT hall, thus bolstering their confidence and ensuring a high score.

Unveiling JAMB Biology Questions and Answers 2023:
This page is your fortunate discovery, as we unveil JAMB Biology Questions and Answers 2023 for all Biology paper participants.

Consider yourself fortunate to have stumbled upon this invaluable resource!

The questions are authentic, and the answers are accurate. They stem from our ardent desire to witness your JAMB success and eventual admission.

In the subsequent sections, you will encounter Biology questions scheduled for your 2023 JAMB examination, accompanied by their respective answers. Should you require further clarification on any queries, feel free to engage with us in the comments section, where we will provide detailed explanations.

JAMB is a rigorous examination. You are tasked with responding to 40 questions in JAMB Biology 2023 within a 26-minute timeframe. Thus, absorbing the information shared on this page is of utmost importance.

JAMB Biology Questions and Answers 2023 [Numbers 1 – 10]

1. The difference between the cell wall of a plant cell and animal cell is that
A. plant cell wall contains silica
B. animal cell contains stomata in its membrane
C. plant cell is made up of membranes only
D. plant cell wall contains cellulose

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2. In mammals, digestion of starch starts in the
A. stomach
B. small intestine
C. mouth
D. liver

3. In the process of pollination of a flowering plant, the pollen grain must touch this structure to start off.
A. petals B. calyx
C. ovary D. stigma

4. All birds have
A. two-chambered heart
B. three-chambered heart
C. four-chambered heart
D. one-chambered heart

5. The list of important types of supporting tissues in plant does not include
A. collenchyma B. cambium
C. sclerenchyma D. xylem

6. Bones of birds are modified for flight by
A. being long
B. being cartilaginous
C. containing air spaces
D. being filled with marrow

7. The waste product of plant like glycosides, tannins, alkaloids and plant oils may be stored in the
A. xylem
B. cell vacuoles and cell wall of leaves
C. roots, stem tissues and bark
D. pith, stomata and root hairs

8. The part of the alimentary system of bird where grinding of maize occurs is
A. crop B. gizzard
C. cloak D. rectum

9. To study the structure of mammalian kidney in a secondary school you need
A. to get fresh kidney of a sheep or a pig
B. to get a fresh kidney of a man
C. to get a fresh kidney of a chick
D. to get a fresh kidney of a toad

10. The following are some examples of food chain in the savanna terrestrial ecosystem except
A. grass→zebra→lion
B. diatoms→crayfish→bony fish
C. seeds→weaverbird→civets
D. leaves→elephant→vulture

Answers to Biology Question Number 1 – 10

1.D 2.C 3.D 4.C 5.C
6.C 7.B 8.B 9.A 10.B

JAMB Biology Questions and Answers 2023 [Numbers 11 – 20]

11. The mitochondrion consists of
A. chemicals that break up complex compounds in the cells into simpler compounds
B. rich store of ribonucleic acid
C. digestive enzymes and hormones
D. protein phosphorus and fats

12. In amoeba, the ectoplasm is bounded by a thin membrane known as the
A. plasmasol B. plasmagel
C. plasmalemma D. protoplasm

13. Centipedes are
A. equally dangerous as millipedes
B. less dangerous than millipedes
C. more dangerous than all
D. not dangerous at all

14. Odontophore is a skeletal structure in the phylum of
A. pisces B. echinoderms
C. mollusca D. amphibians

15. Wattle is a name of a structure found in
A. lizard B. chameleon
C. cock D. dogfish

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16. One of these is not a feature of the caudal vertebrae in mammal
A. they possess neural canal
B. their transverse process are poorly developed
C. their neural spines are gradually lost
D. there are not many articular surfaces

17. The inner ear has two types of coiled structure called cochlea which
A. receives sound impulses
B. has sensory cell which carry impulses to the spinal cord
C. connects to the eusta chain tube
D. possess cells sensitive to balance

18. The viruses are the smallest known organisms and are divided into two parts; the outer part and the inner part. The outer part is protein and the inner part is
A. nucleus B. vacuole
C. particle D. DNA and RNA

19. The thallus of a lichen consists of
A. a virus and a fungus
B. algae cells and fungal hyphae
C. bacterial and fungal cells
D. soredium and basisiopot

20. The palisade parenchyma is found in the
A. steam B. leaf
C. flower D. root

Answers to Biology Question Number 11 – 20

11.A 12.C 13.C 14.C 15.C
16.A 17.A 18.D 19.B 20.B

JAMB Biology Questions and Answers 2023 [Numbers 21 – 30]

21. Increasing complexity due to multicellularity first appeared in this animal group
A. protozoa B. coelentrata
C. sarcodina D. protista

22. In the angiosperms, the sieve tube members are living non-nucleated, but they are usually accompanied by
A. cork cambium B. phloem rays
C. vascular cambium D. companion cells

23. Abscisic acid is a chemical that prepares plants for
A. ripening fruits
B. emergence of seedlings
C. for leaf fall
D. reproduction

24. The formula below represents
C6H12O6 → 2C2H6O + 2CO2 + ATP
A. glycolysis B. fermentation
C. photosynthesis D. respiration

25. In any population, any specific allele will mutate at one time or another, usually to a non functional or harmful form. The proportion of gametes carrying new mutant alleles of a given locus is called
A. the mutation rate
B. the selection coefficient
C. the relative fitness
D. the lethal genotype

26. In mosses, the sporophyte generation is highly prominent producing spores in a cone-like
A. gametophyte B. strobilus
C. Antheridium D. archegonium

27. When Sudan 111 solution is boiled with a solution of food substances, it gives a colour black precipitate showing the presence of
A. fats and oil B. protein
C. amino acid D. starch

28. Plants adapted to life in salty marsh are known as
A. hydrophytes B. xerophytes
C. halophytes D. epiphytes

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29. A circulatory system that does not allow mixing of oxygenated blood in the mammalian heart is referred to as
A. open B. double
C. single D. closed

30. In a pyramid of numbers, it is common to have …… with the smallest of individuals
A. secondary consumers
B. tertiary consumers
C. primary consumers
D. primary producers

Answers to Biology Question Number 21 – 30

21.B 22.D 23.C 24.B 25.A
26.D 27.A 28.C 29.B 30.B

JAMB Biology Questions and Answers 2023 [Numbers 31 – 40]

31. From the following list of types of mutation, identify the one that is hereditary
A. genetic mutation
B. somatic mutation
C. germinal mutation
D. gametic mutation

32. Which of these would not be a limiting factor in photosynthesis?
A. O2 B. CO2
C. chlorophyll D. light

33. In a cell digestive enzymes mostly occur in
A. ribosome B. lysosome
C. mitochondria D. plastids

34. Which of these is not a lipid?
A. wax B. sterol
C. glycerol D. lecithin

35. Phototropism is
A. a unilateral response to light
B. a bilateral response to light
C. both unilateral and bilateral response to light
D. a hormonal gradient created within the organ

36. The site of protein synthesis in a cell is
A. golgi apparatus B. ribosomes
C. lysosomes D. nucleus

37. On storage, the sweetness of corn is lost. This is because
A. polysaccharide is reconverted into soluble sugar
B. concentration of sugar increases due to storage
C. of conversion of sugar to polysaccharide
D. enzymes responsible for the conversion are lost

38. The eye worm is known as
A. Wuchereiria bancrofti
B. Brugia malayi
C. Loa loa
D. Dracunenlus medinensis

39. Which of these plants is not a pitcher plant?
A. nepenthes B. crotalaria
C. sarracenia D. dionaea

40. One of these arthropod is a carrier of viruses and other micro organism
A. termite B. ant
C. bee D. flea

Answers to Biology Question Number 31 – 40

31.C 32.A 33.B 34.C 35.A
36.B 37.C 38.C 39.B 40.D


Presented Above are the 40 Biology questions that could appear on your JAMB Biology Questions And Answers 2023. Dedicate time to repeatedly review these questions, ensuring you become intimately familiar with each one. This will enable you to readily recognize and address them during the examination.

Should you encounter any challenges, don’t hesitate to seek further clarification on any of the questions provided above. Feel free to post your inquiries in the comments section below, and anticipate receiving comprehensive answers in a timely manner.


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