JAMB Biology Past Questions (2010)

Q1. A pair of genes that control a trait is referred to as

A. anallele

B. recessive

C. dominant

D. ahybrid

Answer: A

Q2. Which of the following characterizes a mature plant cell?

A. The cytoplasm fills up the entire cell space

B. The nucleus is pushed to the centre of the cell

C. the cell wall is made up of cellulose

D. The nucleus is small and irregular in shape

Answer: D

Q3. The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the

A. veins

B. right auricle

C. arteries

D. left ventricle

Answer: D

Q4. Circulation of blood to all parts of the body except the lungs is through

A. the pulmonary artery

B. systemic circulation

C. the lymphatic system

D. pulmonary circulation

Answer: B

Q5. A food chain always begins with a

A. consumer

B. decomposer

C. producer

D. primary consumer

Answer: C

Q6. I. Adoption of appropriate nocturnal habits II. Burrowing III. adjusting their internal body temperature IV. Possession of many sweat pores. Which of the above are ways in which desert animals adapt to extreme heat of environment?

A. I and IV only

B. II and III only

C. I and II only

D. I, II and III only

Answer: D

Q7. The chromosome number of a cell before and after the process of meiosis is conventionally represented as

A. 2n_2n

B. n_n

C. n-2n

D. 2n-n

Answer: D

Q8. Which of the following is NOT a function of the nucleus of a cell?

A. it controls the life processes of the cell

B. It translates genetic formation for the manufacture of proteins

C. it stores and carries hereditary information

D. it sis a reservoir of energy for the cell

Answer: D

Q9. Yeast respires anaerobically to covert simple sugar to carbon (IV) oxide and

A. alcohol

B. acid

C. oxygen

D. water

Answer: A

Q10. The flippers of a whale and the fins of a fish are examples of

A. divergent evolution

B. co evolution

C. continuous variation

D. convergent evolution

Answer: A

Q11. The average number of individuals of a species per unit area of the habitat is the

A. population density

B. population frequency

C. population size

D. population distribution

Answer: A

Q12. Which of the following stimuli is likely to elicit a nastic response in an organism?

A. Touch

B. Light intensity

C. Chemical substances

D. gravity

Answer: A

Q13. At what stage in the life history of a mammal is the sex of an individual set?

A. At adolescence

B. At puberty

C. At birth

D. At conception

Answer: D

Q14. The mode of nutrition of sundew and bladderwort can be described as

A. autotrophic

B. saprophytic

C. holozoic

D. chemosynthetic

Answer: C

Q15. Low annual rainfall, sparse vegetation, high dermal temperatures and cold nights are characteristics features of the

A. tropical rainforest

B. desert

C. mundane forest

D. guinea savanna

Answer: B

Q16. The outer layer of the kidney where the Bowman’s capsules are found is the

A. cortex

B. pelvis

C. medulla

D. pyramid

Answer: A

Q17. The vector for yellow fever is

A. edges mosquito

B. anopheles mosquito

C. tsetse fly

D. blackly

Answer: A

Q18. The protozoan plasmodium falciparum is transmitted by

A. female anopheles mosquitoes

B. female Aedes mosquitoes

C. female Culex mosquitoes

D. Female blackfly

Answer: A

Q19. The two halves of the pelvic girdle are jointed together at the

A. public symphysis

B. ilium

C. pubis

D. obturator foramen

Answer: A

Q20. Which of the following is lacking in the diet of a person with kwashiorkor?

A. Vitamins

B. Proteins

C. Carbohydrates

D. Minerals

Answer: B

Q21. When a mixture of a food substance fand Benedict’s solution was warmed, the solution changed from blue to brick red . This indicates the presence of

A. reducing sugar

B. fatty acid

C. sucrose

D. amino acid

Answer: A

Q22. The oily substance that lubricates the mammalian hair to keep it flexible ad water repellent is secreted by the

A. sweat glands

B. sebaceous glands

C. fatty cells

D. granular layer

Answer: B

Q23. The loss of soil through erosion can be reduced by

A. watering

B. crop rotation

C. maturing

D. irrigation

Answer: B

Q24. Chemosynthetic organism are capable of manufacturing their food from simple inorganic substances through the process of

A. oxidation

B. denitrification

C. reduction

D. phosphorylation

Answer: A

Q25. In the male reproductive system of a mammal, sperm is stored in the

A. van deferens

B. urethra

C. epididymis

D. seminiferous tubules

Answer: C

Q26. The barrier between maternal and foetal blood is the

A. placenta

B. liver

C. umbilical chord

D. uterine wall

Answer: A

Q27. If both parents are heterozygous for trait, he probability that an offspring will be recessive for that trait is

A. ¾

B. ½

C. ¼

D. 1

Answer: C

Q28. Mycorrhizae promote plant growth by

A. absorbing inorganic ions from the soil

B. protecting it from infection

C. helping it to utilize atmospheric nitrogen

D. serving as a growth regulator

Answer: A

Q29. Which of the following organisms is mainly found in the marine habitat?

A. Achatina

B. Tilapia

C. Dog fish

D. Tortoise

Answer: C

Q30. The sheet of muscle that separates the thoracic and the abdominal cavities is the

A. diaphragm

B. intercostal muscles

C. pleural membrane

D. pericardium

Answer: C

Q31. Which of the following groups of cells is devoid of true nuclei?

A. viruses

B. algae

C. Monera

D. Fungi

Answer: C

Q32. The dominant phase in the life cycle of a fern is the

A. gametophyte

B. prothallus

C. sporophyte

D. antheridium

Answer: C

Q33. Throxne and adrenalin are examples of hormones which control

A. blood grouping

B. tongue rolling

C. behavioural patterns

D. colour variation

Answer: C

Q34. Parental care is exhibited by

A. toads

B. snails

C. earthworms

D. birds

Answer: D

Q35. A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of

A. taste bud variation

B. discontinuous variation

C. morphological variation

D. continuous variation

Answer: B

Q36. The main distinguishing features between the soldier termite and other members of the caste are the

A. presence of wings, possession of a small head and large thorax

B. presence of wings, possession of a large thorax and a small head

C. absence of wings, possession off strong mandibles and a large head

D. absence of wings, possession of big head and the absence of mandible.

Answer: C

Q37. The blood component that has the greatest affinity for oxygen is the

A. lymphocytes

B. leucocytes

C. erythorocytes

D. thromboytes

Answer: C

Q38. Which of the following is true of the transverse section of a dicot stem?

A. The epidermis is completely encircled by the cortex

B. The xylem is more interiorly located than the phloem

C. The cambium lies between the cortex and the vascular bundles

D. The vascular bundles are randomly scattered within the cortex

Answer: B

Q39. The part of the human gut that has an acidic content is the

A. stomach

B. duodenum

C. ileum

D. colon

Answer: A

Q40. I. Stomata _ spirogyra II alveoli _ earthworm III malpighian tubule_mammal Iv.Contractile vacuole _protozoa Which of the above structures is correctly matched with the organisms in which it is found?

A. III

B. II

C. I

D. IV

Answer: D

Q41. A classroom teacher is promoted to the rank of a principal. This is an example of

A. vertical mobility

B. lateral mobility

C. social mobility

D. horizontal mobility

Answer: D

Q42. A tent-making factory offers

A. personal services

B. indirect services

C. social services

D. reflex services

Answer: B

Q43. Sandstone is metamorphosed into

A. Slate

B. Schist

C. graphite

D. Quartzite

Answer: D

Q44. Cyclones are centres of

A. relative low pressure

B. relative high pressure

C. Tsunamis

D. turning around of winds

Answer: A

Q45. All planets have satellites except:

A. Earth & Venus

B. Mars & Mercury

C. Mercury & Venus

D. Neptune & Venus

Answer: C