2026 JAMBITES STUDENT'S!!!

U CAN MESSAGE ME FOR JAMB ASSISTANT

*280+ TO 380+ JAMB SCORE 2026*

*JUST 39 DAYS LEFT TO MAIN JAMB, YOUR DECISION WILL DETERMINE FROM NOW......DM EXAMKEY CEO FOR JAMB ASSISTANT!!!!*

*TELL YOUR PARENTS ABOUT US, DON'T LET YOUR SON FAIL JAMB AND REWRITE AGAIN*

*WHATSAPP 09056863938 OR 09137409382 ONLY.*

*BIOLOGY JAMB CBT QUESTIONS AND ANSWERS 📚📝💯🧠*



1) Which of the following is an example of a microorganism in action as a disease vector?

A. Fungi decomposing dead plant material
B. Mosquito transmitting malaria
C. Bacteria causing food poisoning
D. Algae producing oxygen through photosynthesis


2) Which of the following is a characteristic of cells related to irritability?

A. Ability to respond to stimuli
B. Ability to synthesize proteins
C. Ability to generate energy
D. Ability to replicate DNA


3) The membrane around the vacuole is known as

A. Elaioplast
B. Amyloplast
C. Tonoplast
D. Cytoplast


4) Which of the following is evidence of evolution?

A. All of the above.
B. Similarities in embryonic development
C. Fossils of extinct organisms
D. Homologous structures in different species


5) Which of the following is an example of an adaptation for survival in social insects?

A. Migration to warmer climates
B. Production of venom for defense
C. Formation of complex caste systems
D. Hibernation during winter months


6) Which of the following is NOT a part of the alimentary canal?

A. Oesophagus
B. Large intestine
C. Liver
D. Small intestine


7) Which of the following is an evolutionary trend commonly observed in organisms?

A. Decreased complexity over time
B. Increased dependence on external resources
C. Increased genetic diversity within populations
D. Decreased adaptation to the environment


8) Which of the following is a characteristic feature of Kingdom Plantae?

A. Presence of chloroplasts
B. Ability to perform photosynthesis
C. Lack of cell walls
D. Heterotrophic mode of nutrition


9) A biome characterized by hot summer, warm winter and treeless vegetation is

A. Steppe grasslands
B. Temperate deserts
C. Savannah grassland
D. Tropical deserts


10) Which of the following is an example of physiological variation in organisms?

A. Variation in blood pressure among individuals
B. Variation in beak shape among finches
C. Differences in fur color in rabbits
D. Variation in leaf shape in plants


11) Which of the following are components of the skeletal system in humans?

A. Cartilage and blood vessels
B. Ligaments and tendons
C. Muscles and nerves
D. Bones and joints


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12) Which of the following represents an example of ecological management and conservation through a biological association?

A. Construction of a dam for hydroelectric power
B. Introduction of an invasive species for pest control
C. Clear-cutting of a forest for timber extraction
D. Establishment of marine protected areas


13) The term cell was given by

A. Robert Hooke
B. Schwann
C. De Bary
D. Tatum


14) Which of the following is the primary organ involved in gas exchange during respiration in humans?

A. Diaphragm
B. Bronchi
C. Lungs
D. Trachea


15) Which gland is responsible for producing the hormone insulin?

A. Thyroid gland
B. Pituitary gland
C. Pancreas
D. Adrenal gland


16) Most fishes do not sink in water because of the presences of:
I. swim bladder
II. air bladder
III. air sacs
IV. air in spongy bones

A. II and III are correct
B. I and II are correct
C. I, II, III and IV are correct
D. III and IV are correct


17) In monohybrid inheritance, if an organism carries two different alleles for a particular gene, it is called:

A. Homozygous
B. Dominant
C. Heterozygous
D. Recessive


18) What is the tissue responsible for transporting water and minerals from the roots to the rest of the plant?

A. Xylem
B. Epidermis
C. Parenchyma
D. Phloem



19) Which of the following is an example of an abiotic ecological factor?

A. Temperature
B. Competition
C. Predation
D. Symbiosis



20) Which of the following processes is involved in the reproduction of developing organisms?

A. Budding
B. Germination
C. Fertilization
D. Pollination


21) Behavioral adaptation for dealing with a hot climate could include

A. Hibernating during the hottest part of the day
B. Large scales on the back of a lizard
C. Feeding during the hottest part of the day
D. A small kidney to conserve water

22) The natural place of an organism or community is known as

A. Niche
B. Habit
C. Biome
D. Habitat



23) Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize?

A. Denitrification
B. Nitrogen fixation
C. Ammonification
D. Nitrification


24) Which of the following functions is performed by the skin to help maintain homeostasis in the human body?

A. Regulation of body temperature
B. Filtration of blood
C. Production of hormones
D. Digestion of food



25) Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains?

A. Yellow soil
B. Laterite soil
C. Red soils
D. Black soil



26) Which type of reproduction involves the fusion of gametes from two parents?

A. Sexual reproduction
B. Asexual reproduction
C. Binary fission
D. Budding


27) Which processes are involved in nutrient cycling in a functioning ecosystem?

A. Erosion, weathering, and sedimentation
B. Decomposition, evaporation, and precipitation
C. Nitrogen fixation, denitrification, and ammonification
D. Respiration, photosynthesis, and transpiration.


28) What is autotrophic nutrition?

A. Nutrition in which organisms obtain food by breaking down complex organic compounds.
B. Nutrition in which organisms obtain food from other organisms
C. Nutrition in which organisms obtain food by consuming both plants and animals
D. Nutrition in which organisms produce their own food using energy from the sun or inorganic substances



29) The theory of evolution can be defined as

A. The belief that all species were created in their current form
B. The hypothesis that organisms strive to improve themselves over generations
C. The idea that species change over time through natural processes
D. The concept that evolution occurs through a series of sudden and dramatic changes



30) Which of the following is a male reproductive organ in humans?

A. Uterus
B. Ovary
C. Testis
D. Fallopian tube



31) Which of the following is an example of a behavioral adaptation for survival in animals?

A. Sharp teeth
B. Migration
C. Wings
D. Camouflage



32) Which of the following traits is not visible in a person with Down syndrome?

A. Short neck
B. High muscle tone
C. Small stature
D. Slant eyes



33) What is the definition of population ecology?

A. The study of interactions between organisms and their physical environment
B. The study of evolutionary processes and their effects on populations
C. The study of interactions between different populations in an ecosystem
D. The study of the distribution and abundance of individuals within a species



34) What is the term used to describe the maximum number of individuals of a species that an environment can support indefinitely?

A. Ecological niche
B. Limiting factor
C. Carrying capacity
D. Density-dependent factor



35) Which of the following statements about the heart is true?

A. The heart is responsible for the production of red blood cells
B. The heart pumps oxygenated blood to the lungs
C. The heart receives blood from the kidneys and filters waste products
D. The heart is a muscular organ that contracts to circulate blood throughout the body



36) What is the primary source of variation in a population?

A. Gene flow
B. Mutation
C. Natural selection
D. Genetic drift


37) Which component of blood is responsible for carrying oxygen to the body tissues?

A. Platelets
B. White blood cells
C. Red blood cells
D. Plasma



38) What are the primary products of photosynthesis?

A. Carbon dioxide and water
B. Glucose and oxygen
C. Glucose and carbon dioxide
D. Oxygen and water



39) The alternate form of a gene is

A. Alternate type
B. Dominant character
C. Recessive character
D. Allele


40) Which organs are part of the alimentary canal in the human digestive system?

A. Salivary glands, tongue, and pharynx
B. Large intestine, appendix, and rectum
C. Stomach, liver, and gallbladder
D. Oesophagus, pancreas, and small intestine



41) Which of the following characteristics is typical of the phylum Arthropoda?

A. Radial symmetry
B. Closed circulatory system
C. Endoskeleton made of bones
D. Presence of a segmented body



42) Which of the following is an example of conserving resources in an ecosystem

A. Excessive use of chemical fertilizers in agriculture
B. Introducing invasive species to an ecosystem
C. Implementing sustainable fishing practices
D. Cutting down trees for timber production



43) Which of the following represents the correct hierarchical organization of life from the smallest to the largest scale?

A. Organs, tissues, cells, organisms, populations, communities, ecosystems
B. Cells, organs, tissues, organisms, populations, communities, ecosystems
C. Tissues, organs, cells, organisms, populations, communities, ecosystems
D. Cells, tissues, organs, organisms, populations, communities, ecosystems



44) Which of the following blood vessels carries oxygenated blood away from the heart?

A. Arteries
B. Venules
C. Capillaries
D. Veins



45) Which of the following describes the inheritance of traits from parents to offspring

A. Evolution
B. Adaptation
C. Genetics
D. Natural selection



46) Which of the following factors primarily affects the distribution of organisms in an ecosystem

A. Wind speed
B. Soil pH
C. Temperature
D. Day length



47) Which of the following is NOT a method of reproduction in animals?

A. Asexual reproduction
B. Budding
C. Sexual reproduction
D. Sporulation



48) Which of the following statements is true about the kingdom Fungi?

A. Fungi obtain nutrients by absorbing organic matter
B. Fungi are photosynthetic organisms
C. Fungi are multicellular organisms
D. Fungi reproduce through the formation of seeds



49) Viviparity refers to the reproductive strategy in which

A. Offspring are produced by internal fertilization
B. Offspring are produced by external fertilization
C. Offspring develop and are nourished inside the female's body
D. Offspring develop and are nourished outside the female's body



50) Which of the following is the most inclusive level of classification in the Linnaean system?

A. Kingdom
B. Phylum
C. Domain
D. Class

*BIOLOGY JAMB CBT QUESTIONS – ANSWERS & EXPLANATIONS 📚🧠🔥🔥*

*1) B – Mosquito transmitting malaria*
👉 Mosquito acts as a vector, carrying the disease-causing organism.

*2) A – Ability to respond to stimuli*
👉 Irritability means responding to changes in the environment.

*3) C – Tonoplast*
👉 Tonoplast is the membrane surrounding the vacuole.

*4) A – All of the above*
👉 Fossils, homologous structures, and embryos all support evolution.

*5) C – Formation of complex caste systems*
👉 Social insects like ants and bees survive through division of labour.

*6) C – Liver*
👉 The liver aids digestion but is not part of the alimentary canal.

*7) C – Increased genetic diversity within populations*
👉 Evolution increases variation for better adaptation.

*8) A – Presence of chloroplasts*
👉 Plant cells contain chloroplasts for photosynthesis.

*9) C – Savannah grassland*
👉 Savannah has hot summers, warm winters, and scattered trees.

*10) A – Variation in blood pressure among individuals*
👉 Physiological variation affects body functions, not structure.

*11) D – Bones and joints*
👉 These form the framework of the skeletal system.

*12) D – Establishment of marine protected areas*
👉 This helps conserve biodiversity naturally.

*13) A – Robert Hooke*
👉 He discovered cells while observing cork.

*14) C – Lungs*
👉 Gas exchange occurs in the alveoli of the lungs.

*15) C – Pancreas*
👉 The pancreas produces insulin.

*16) B – I and II are correct*
👉 Swim bladder (air bladder) helps fishes float.

*17) C – Heterozygous*
👉 Having two different alleles for a gene.

*18) A – Xylem*
👉 Xylem transports water and minerals.

*19) A – Temperature*
👉 Abiotic factors are non-living components.

*20) C – Fertilization*
👉 It leads to the formation of a zygote.

*21) A – Hibernating during the hottest part of the day*
👉 This reduces heat stress (behavioural adaptation).

*22) D – Habitat*
👉 Habitat is the natural home of an organism.

*23) B – Nitrogen fixation*
👉 Converts atmospheric nitrogen to usable forms.

*24) A – Regulation of body temperature*
👉 Skin helps control heat via sweating.

*25) B – Laterite soil*
👉 Heavy rainfall washes away nutrients.

*26) A – Sexual reproduction*
👉 Involves fusion of male and female gametes.

*27) C – Nitrogen fixation, denitrification, and ammonification*
👉 These recycle nutrients in ecosystems.

*28) D – Organisms produce their own food*
👉 Example: green plants.

*29) C – Species change over time through natural processes*
👉 Core idea of evolution.

*30) C – Testis*
👉 Produces sperm cells.

*31) B – Migration*
👉 A behavioural survival strategy.

*32) B – High muscle tone*
👉 Down syndrome is associated with low muscle tone.

*33) D – Distribution and abundance of individuals within a species*
👉 Focus of population ecology.

*34) C – Carrying capacity*
👉 Maximum population an environment can sustain.

*35) D – Muscular organ that circulates blood*
👉 Main function of the heart.

*36) B – Mutation*
👉 Source of new genetic variation.

*37) C – Red blood cells*
👉 They contain haemoglobin for oxygen transport.

*38) B – Glucose and oxygen*
👉 Products of photosynthesis.

*39) D – Allele*
👉 Alternate form of a gene.

*40) B – Large intestine, appendix, and rectum*
👉 All are part of the alimentary canal.

*41) D – Presence of a segmented body*
👉 Arthropods have segmented bodies and jointed limbs.

*42) C – Implementing sustainable fishing practices*
👉 Prevents over-exploitation.

*43) D – Cells → tissues → organs → organisms → populations → communities → ecosystems*
👉 Correct biological hierarchy.

*44) A – Arteries*
👉 Carry oxygenated blood away from the heart.

*45) C – Genetics*
👉 Study of inheritance.

*46) C – Temperature*
👉 Major factor affecting organism distribution.

*47) D – Sporulation*
👉 Common in plants and fungi, not animals.

*48) A – Fungi absorb organic matter*
👉 They are heterotrophic.

*49) C – Offspring develop inside the female*
👉 Example: humans.

*50) C – Domain*
👉 Highest and most inclusive level of classification.

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*NECO UPDATE 🔥🔥*

*NECO(SC) INTERNAL- 2026 REGISTRATION HAS COMMENCED. Students can now begins to enroll for NECO 2026.*

ACCORDING TO WAEC TIMETABLE FOR YEAR 2026

WAEC STARTS BY APRIL 23 OF NEXT MONTH!!!

KINDLY SHARE IT TO YOUR CLASSMATES IN SCHOOL 🏫.

2026 JAMBITES STUDENT'S!!!

U CAN MESSAGE ME FOR JAMB ASSISTANT

*280+ TO 380+ JAMB SCORE 2026*

*JUST 36 DAYS LEFT TO MAIN JAMB, YOUR DECISION WILL DETERMINE FROM NOW......DM EXAMKEY CEO FOR JAMB ASSISTANT!!!!*

*TELL YOUR PARENTS ABOUT US, DON'T LET YOUR SON FAIL JAMB AND REWRITE AGAIN*

*WHATSAPP 09056863938 OR 09137409382 ONLY.*

JAMB Registers 2,243,816 Candidates for 2026 UTME, see breakdown for each state!!!.

Number of Registered Candidates for 2026 UTME in Each State
Abia – 44,394
Adamawa – 31,321
Akwa Ibom – 47,079
Anambra – 34,787
Bauchi – 27,963
Bayelsa – 27,245
Benue – 60,860
Borno – 33,483
Cross River – 34,605
Delta – 77,670
Ebonyi – 19,662
Edo – 59,605
Ekiti – 31,643
Enugu – 50,305
FCT (Abuja) – 302,963
Gombe – 23,012
Imo – 42,170
Jigawa – 28,166
Kaduna – 303,498
Kano – 83,167
Katsina – 37,973
Kebbi – 36,533
Kogi – 46,783
Kwara – 64,988
Lagos – 321,814
Nasarawa – 65,739
Niger – 47,679
Ogun – 137,156
Ondo – 66,270
Osun – 64,894
Oyo – 122,662
Plateau – 62,440
Rivers – 105,584
Sokoto – 20,243
Taraba – 38,093
Yobe – 20,583
Zamfara – 14,841.