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.
What is the genetic ratio of a cross between homozygous tall plant and a homozygous dwarf plant?
A0 tall : 4 short
B3 tall : 1 short
C2 short : 2 tall
D1 tall : 1 short
E4 tall : o short
View Explanation & Discuss
Question 2442
jamb1981
Which of the following animals is cold blooded
ACat
BLizard
CWhale
DBird
EHorse
View Explanation & Discuss
Question 2443
jamb1981
Which of the following is NOT true of wind-pollinated flowers?
AA large amount of pollen produced
BLight smooth pollen grains
CSmall inconspicuous flowers
DScented petals
ELarge pendulous anther
View Explanation & Discuss
Question 2444
jamb1980
The lime water in container C turned milky because?
ACarbon dioxide was produced by plant during respiration
BCarbon dioxide entered through the filter pump
COxygen reacts with lime water to produce milkiness
DSoda lime did not remove carbon dioxide from the air
EThe delivery tubes were not well connected
View Explanation & Discuss
Question 2445
jamb1980
The lime water in container C turned milky because
Acarbon dioxide was produced by plant
Bduring respiration carbon dioxide entered C
Coxygen reacts with lime water to produce milkiness
Dsoda lime did not remove carbon dioxide from air
Ethe delivery tubes were not well connected
View Explanation & Discuss
Question 2446
jamb1980
Reserved food materials is
Astored in the parts numbered 2 and 3
Bstored in the part numbered 3 only
Cstored in the part numbered 4 and 5
Dnot concentrated in any particular part
Efound in all except 1
View Explanation & Discuss
Question 2447
jamb1980
The testa
Ais normally absent
Bis included in the part numbered (1)
Cis fused in the part numbered (3)
Dis the part numbered (1)
Esurrounds the part numbered (4) and (5)
View Explanation & Discuss
Question 2448
jamb1980
Which of the labelled parts is the venga caval opening?
A1
B2
C3
D4
E5
View Explanation & Discuss
Question 2449
jamb1980
Why is the part labelled 5 thicker than 6?
A5 is the left ventricle and 6 the right ventricle
B6 is the left ventricle and 5 the right ventricle
C5 receives blood from the left auricle and 6 from the right
D5 pumps blood round the body and 6 pumps blood into the lungs
E5 deals with oxygenated blood and 6 deals with deoxygenated blood
View Explanation & Discuss
Question 2450
jamb1980
In the figure above the structure which prevents friction between the bones is
A1
B2
C3
D4
E5
View Explanation & Discuss
Question 2451
jamb1980
In animals, cilia, flagella, pseudopodia and chaetae, can be used for
Areproduction
Bfighting
Cattachment to plants
Dlocomotion
Elocating sensation
View Explanation & Discuss
Question 2452
jamb1980
The amount of water loss from a leaf can be detected using
Alime-water
Bred litmus paper
Cblue litmus paper
Dblue cobalt chloride paper
Epink cobalt chloride paper
View Explanation & Discuss
Question 2453
jamb1980
A mosquito which produces eggs which float, and whose larvae lie horizontal to the water surface, also rests at the angle on a vertical surface. This type of mosquito is
AAedes
BAnopheles
CCulex
DTiger mosquito
Enone of the above
View Explanation & Discuss
Question 2454
jamb1980
Below are some group of diseases. Which group of diseases is caused by bacteria?
ATuberculosis, smallpox
BGonorrhoea, measles
CTuberculosis, polio
DSleeping sickness, measles
ESyphilis, gonorrhoea
View Explanation & Discuss
Question 2455
jamb1980
Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli
Aa → b → e → f → d
Bb → d → f → e → c
Cd → b → e → c → f
Db → a → f → e → c
Ef → e → c → d → c
View Explanation & Discuss
Question 2456
jamb1980
A few grams of dried soil were first heated until red hot and then further heated until no more smoke was released. This experiment was to determine
Aamount of water in soil
Bpercentage of water in soil
Cpresence of humus in soil
Dresistance of laterities to heat
Erelease of smoke from the soil
View Explanation & Discuss
Question 2457
jamb1980
During thunderstorms the energy of lightning discharge causes
Aoxygen and nitrogen to combine
Bmore carbon dioxide to be formed
Cnitrites to be converted to nitrates
Dnitrates to be converted to nitrogen
Edeath
View Explanation & Discuss
Question 2458
jamb1980
Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they
Aenrich the soil with phoshates
Bprovide animals with food
Cenrich the soil with organic nitrogen
Dprotect the soil from being over-heated
Eprotect the micro organisms in the soil
View Explanation & Discuss
Question 2459
jamb1980
If a baby is a female, her mother's ovum must have been fertilized by a sperm carry the chromosome
AX
BXY
CXX
DYY
EY
View Explanation & Discuss
Question 2460
jamb1980
if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be
