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 stage during cell division is represented in the figure above?
AProphase
BMetaphase
CAnaphase
DTelophase
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Question 2142
jamb1990
What will be the result of the first filial generation (F1) and the second filial generation (F2) of a mono-hybrid cross between pure line normal-winged Drosophilia flies and pure line short-winged flies, if the gene for the normal wing is dominant?
AF1 flies all short-winged and F2 flies all normal-winged
BF1 flies all normal and F2 flies all short-winged
CF1 flies all short-winged and three-quarters of F2 flies are short-winged
DF1 flies all normal-winged and three-quarters of F2 flies are normal-winged
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Question 2143
jamb1990
In organism where the 2nd number of chromosomes is 16, the number of chromosomes in each gamete will be
A32
B16
C8
D4
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Question 2144
jamb1990
The part of the ear that is concerned with balance is the
Asemi-circular canals
Bincus
Cmalleus
DEustachian tube
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Question 2145
jamb1990
The elephant grass is propagated vegetatively by means of
Acorms
Bbubils
Csuckers
Dstolons
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Question 2146
jamb1990
The type of placentation shown in the figure above is a
Aparietal
Bmarginal
Caxile
Dfree-central
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Question 2147
jamb1990
Fruits which develop without fertilization are described as
Asimple
Bpathencorpic
Caggregate
Dcompound
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Question 2148
jamb1990
During mammalian embryo development, large amounts of oestrogen and progesterone are produced in the
Aumbilical cord
Bamnion
Cplacenta
Damniotic fluid
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Question 2149
jamb1990
Muscles are indirectly attached to bones by means of
Aligaments
Bmembranes
Ctendons
Dsutures
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Question 2150
jamb1990
Etiolation is caused by the influence of
Aminerals salt
Bwater
Ccarbondioxide
Dlight
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Question 2151
jamb1990
Excretory products responsible for the red, purple and blue colours of flowers are called
Aalkaloid
Btannins
Canthocyanins
Dresins
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Question 2152
jamb1990
Transpiration can be measured with a
Aphotometer
Bhygrometer
Cpotometer
Dbarometer
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Question 2153
jamb1990
If a ring of bark and phloem is removed from a stem, the
Aplant dies immediately
Bplant dies after two days
Cmovement of food is not affected
Dmovement of minerals is hardly affected
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Question 2154
jamb1990
The vilius in the small intestine is significant because it
Aincrease the surface area for absorption
Bincrease the surface area for digestion
Cassists in mixing digested food
Dassists in filtering undigested food
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Question 2155
jamb1990
The organ which secretes digestive enzymes as well as hormones is the
Aliver
Bsalivary gland
Cpancreas
Dspleen
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Question 2156
jamb1990
Which of the following food substance will produce a brick-red colour when warmed with Benedict's solution?
AGlucose
BStarch
CEgg white
DMaltose
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Question 2157
jamb1990
The first step in the process of photosynthesis is the
Aactivation of the chlorophyll
Bphotolysis of water
Creduction of carbondioxide
Dformation of sugar
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Question 2158
jamb1990
The mode of nutrition in which digestion is extracellular is
Aholophytic
Bparasitic
Cholozoic
Dsaprophytic
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Question 2159
jamb1990
Which type of the following cells is thin-walled and living at maturity?
ACollenchyma
BSieve tube
Cxylem vessel
Dsclerenchyma
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Question 2160
jamb1990
which of the following disease is rarely spread by a housefly?
