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.
The term caryopsis is used to describe a fruit in which the
Atesta and pericarp are separate
Bseed and endocarp are fused
Ctesta and pericarp are fused
Dseed coat and fruit wall are impermeable
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Question 853
jamb1995
An example of a plant having the placentation shown is
Aallamander
Bhibiscus
Cwater lily
Dpride of Barbados
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Question 854
jamb1995
The type of placentaion shown is
Aaxial
Bmarginal
Cparietal
Dcentral
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Question 855
jamb1995
When a healthy shoot of a flowering plant is illuminated from one side, auxins, accumulate on the
Anon-illuminated side of the shoot
Billuminated side of the shoot
Cupper side of the shoot
Dlower side of the shoot
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Question 856
jamb1995
During the bending of the arm, the biceps muscles
Acontracts and the triceps muscles relaxes
Brelaxes and the triceps muscles contracts
Cand the triceps muscles contract
Dand the triceps muscles relax
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Question 857
jamb1995
The excretory structure in the earthworm is the
Amalpighian tubule
Bflame cell
Cnephridium
Dkidney
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Question 858
jamb1995
During respiration, air circulates round plant tissues via the
Alenticels
Bstomata
Cguard cells
Dintercellular spaces
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Question 859
jamb1995
The end product of glycolysis in plants and animals is
Apyruvic acid
Bcitric acid
Caspartic acid
Dmalic acid
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Question 860
jamb1995
Which of following is NOT involved in the transport of substance in the body?
ALymph
BPlasma
CLeucocytes
DErythrocytes
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Question 861
jamb1995
The mammalian organ which acts both as a digestive and as an endocrine organ is the
Aoesophagus
Bliver
Cpancreas
Dspleen
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Question 862
jamb1995
Which vitamin plays an important role in blood clotting?
Avitamin A
BVitamin K
CVitamin B12
DVitamin C
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Question 863
jamb1995
In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of
Awashed sand
Bsaw dust
Ccow dung
Dclay soil
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Question 864
jamb1995
2H2 → 2H2 + O2(g). The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur?
AEnzyme and light energy
BCarbondioxide and light energy
CLight energy and cholorphyll
DChlorophyll and enzyme
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Question 865
jamb1995
Secondary thickening in dicotyledonous stem is controlled by the
Axylem
Bphloem
Ccambium
Dpericycle
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Question 866
jamb1995
Birds maintain their body temperature with the help of their
Ablood which maintains constant temperature
Bfeathers which cover the body
Cskin which conserves moisture
Dveins which transport fluid of constant temperature to all body tissues
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Question 867
jamb1995
Which of the following vertebrates does the skin function as a respiratory surface?
ARat
BLizard
CFish
DFrog
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Question 868
jamb1995
Which of the following insects lays its eggs in horny, purse-like cases?
AMosquito
BButterfly
CTermite
DCockroach
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Question 869
jamb1995
Which of the following is transmitted through mosquito bite?
AFilariasis
BTyphus
CPlague
DSchistosomiasis
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Question 870
jamb1995
The sexual reproductive function is performed by the part labelled
