Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Which of the following values showing the total biomass of organisms in a food chain represents the secondary consumer?
A40,000
B3,000
C20
D1
View Explanation & Discuss
Question 12
waec2003
Ecology is best defined as the study of
Athe characteristics of an environment
Bthe inter-relationship between living organisms and their environment
Cliving organisms in a particular area
Dthe habitats and wildlife
View Explanation & Discuss
Question 13
waec2003
The type of nutrition shown by Spirogyra is
Asymbiosis
Bholophytic
Cholozoic
Dchemosynthetic
View Explanation & Discuss
Question 14
waec2003
Good quality food will perform the following functions in humans except
Asupplying energy
Bproviding resistance against malaria
Csustaining growth
Dmaintaining health
View Explanation & Discuss
Question 15
waec2003
Which of the following essential substances is contained in vegetables?
AChlorophyll
BGlucose
CMineral salts
DCarbon dioxide
View Explanation & Discuss
Question 16
waec2003
Which of the following organisms exhibits extracellular digestion?
AMoulds
BGreen plants
CAlgae
DBryophytes
View Explanation & Discuss
Question 17
waec2003
Which of the following is considered to be the first product of photosynthesis?
AProtein
BEnergised chlorophyll
CHydroxyl ions
DStarch
View Explanation & Discuss
Question 18
waec2003
Which of the following groups of compounds are products of the light stage of photosynthesis? I. Ribulose bi-phosphate (RuBP) II. Nicotin amide di-phosphorous (NADPH2) III. Oxygen (O 2) IV. Adenosine Triphosphate (ATP)
AI,II and lll
Bl, lll and lV
Cll,lll and lV
Dl, ll, lll and IV
View Explanation & Discuss
Question 19
waec2003
In the test for starch, the leaf is first placed in boiling water to
Aremove the chlorophyll
Bdissolved the waxy cuticle
Ckill and make the leaf permeable
Dturn it blue-black
View Explanation & Discuss
Question 20
waec2003
Which of the following statements about water in humans is not correct? it
Aplays an important role in temperature regulation
Bacts as solvent for substances conveyed around the body
Cplays a role in the formation of vitamin
Dis needed for many life processes
View Explanation & Discuss
Question 21
waec2003
The function of the amniotic fluid in humans is to
Aprotect the foetus against shocks
Bremove waste products from the foetus
Csupply food and water to foetus
Dcarry oxygen to the foetus
View Explanation & Discuss
Question 22
waec2003
Placentation of plants is best described as the
Aarrangement of ovules in the ovary
Barrangement of fruits on the branches
Cdevelopment of ovules in the ovary
Dformation of the pericarp from the ovary wall
View Explanation & Discuss
Question 23
waec2003
The layer of light-sensitive cells in the human eye is called the
Acornea
Bsclerotic layer
Cretina
Dconjunctiva
View Explanation & Discuss
Question 24
waec2003
Which of the following is the function of the iris of the mammalian eye?
Acloses and opens the eye
BAbsorbs dangerous rays from sunlight
Cregulates the amount of light entering the eye
Dbringing light rays to focus on the retina
View Explanation & Discuss
Question 25
waec2003
The part of the nervous system that interprets blinking of the eye is the
Aspinal cord
Bcerebrum
Chind brain
Dolfactory lobe
View Explanation & Discuss
Question 26
waec2003
The endocrine gland secreting hormone that induces the thyroid gland to produce more thyroxine is
Aislets of Langerhans
Badrenal gland
Cpituitary gland
Dparathyroid gland
View Explanation & Discuss
Question 27
waec2003
Which of the following endocrine glands is a master gland?
APituitary gland
BThyroid gland
CPancreas
DOvary
View Explanation & Discuss
Question 28
waec2003
The glomerular filtrate contains the following substances except?
Awater
Burea
Cblood corpuscles
Dglucose
View Explanation & Discuss
Question 29
waec2003
In cold condition the mammalian body reacts in the following ways except
Ashivering of the body
Bdilation of the capillaries supplying blood to the skin
Cconstriction of blood capillaries in the skin
Dincreased rate of chaemical changes in the body
View Explanation & Discuss
Question 30
waec2003
Which organ removes the largest the largest quantity of water from the blood?
