1999 - JAMB Biology Past Questions and Answers - page 2
11
In plant cells, the chloroplast are located
A
inside the cell wall
B
outside the protoplasm
C
within the vacuole
D
within the cytoplasm
correct option: d
Users' Answers & Comments12
In the woody stems, gaseous exchange takes place through the
A
micropyles
B
stomata
C
lenticels
D
vessels
correct option: c
Users' Answers & Comments13
Substance manufactured by the leaves are transported to other parts of the plant through the
A
xylem
B
companion cells
C
sieve tubes
D
cambium
correct option: a
Users' Answers & Comments14
After a meal of yam has been digested, the highest concentration of glucose is to be found in the
A
hepatic artery
B
pulmonary vein
C
hepatic portal vein
D
posterior vena cava
correct option: c
Users' Answers & Comments15
The dark reaction of photosynthesis involves
A
fixation of carbon (IV) oxide to give six-carbon sugar
B
fixation of carbon (IV) oxide with the help of oxygen
C
use of carbon (IV) oxide to produce glucose using ATP
D
fixation of carbon (IV) oxide on chlorophyll using hydrogen
correct option: c
Users' Answers & Comments16
Mammals acclimatize to reduced oxygen content at high altitudes by
A
the stimulation of marrow to reduce the amount of erythrocytes produced
B
increasing the rate at which erythrocytes are destroyed
C
the stimulation of marrow to produce more erythrocytes
D
increasing the break down of the protein portion of the erythrocytes
correct option: a
Users' Answers & Comments17
The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are
A
photosynthetic , parasitic and holozoic
B
chemosynthetic, parasitic and holozoic
C
photosynthetic, parasitic and heterophytic
D
chemosynthetic, holophytic and holozoic
correct option: b
Users' Answers & Comments18
The richest source of vitamin A are
A
palm oil and groundnut oil
B
palm oil and carrot
C
rice and groundnut oil
D
oranges and carrot
correct option: b
Users' Answers & Comments19
The force that holds water together in the form of a stream within the xylem tube is the
A
cohesion of water molecules to one another by hydrogen bonds
B
force of gravity attacking the water molecules through the hydrogen bonds
C
attraction between the water and xylem osmotic force
D
normal flow of water from the ground with help of gravitational force
correct option: a
Users' Answers & Comments20
Yellowing of leaves is a symptom associated with deficiency of
A
iron, calcium and magnesium
B
nitrogen, sulphur and potassium
C
sulphur, phosphorus and iron
D
magnesium, nitrogen and iron
correct option: d
Users' Answers & Comments