Question 1 of 20 2,099 total questions
Thunderstorm can be beneficial to plants because it
A kills the pest that attacks crops
B destroys some of the major crops
C adds nitrates to the soil
D adds lime to the soil
E makes rain water available to plants
A dry indehiscent fruit containing one seed and possessing a hairy pappus is described as
A a nut
B a drupe
C a cypsela
D a follicle
E an achene
Which of the following is the effect of using artificial pollination in plant breeding?
A Production of healthy crops
B Improvement of the variety of crops
C Making crops susceptible to diseases
D Lengthening the maturity time of crops
E Encouraging competition amongst crops
The organ located in the mammalian abdominal cavity just below the diaphragm
A bladder
B intestine
C liver
D pancreas
E chorion
The structure of the embryo which develops and makes contact with the uterine
A umbilical cord
B placenta
C allantois
D amnion
E chorion
What is the difference between viviparous and oviparous animals?
A Possession of yolked eggs
B Laying of unfertilized eggs
C Possession of yolkless eggs
D Protection of eggs from predator
E Laying and brooding of eggs
The gamete is produced in the structure labelled
The structures labelled III, VI, IV and II respectively represent the
A uterus, cervix, oviduct and ureter
B cervix, oviduct, uterus and ureter
C oviduct, uterus, ureter and cervix
D vagina, cervix, oviduct and uterus
E uterus, cervix, ovary and oviduct
Which of the following parts of the' tongue does not correspond to the taste indicated against it?
A Tip-sweet
B Centre salt
C Back-sour
D Side-sour
E Back-bitter
Which of the following stimuli are not perceived through the skin of mammals?
A Light
B Pressure
C Pain
D Heat
E Cold
Which of the following is not true about auxins? They
A are manufactured by plants
B are used in the site of production
C are normally present in minute quantities in the cells of plants
D regulate growth rate of plants
E regulate direction of growth in plants
The brain and spinal cord make up the
A peripheral nervous system
B automatic nervous system
C central nervous-system
D somatic nervous system
E sympathetic nervous system
Which of the following parts of the mammalian brain is involved in taking the decision to run rather than
A Cerebellum
B Medulla oblongata
C Cranial nerves
D Mid brain
E Cerebrum
The condition known as cretinism is caused by the deficiency of
A adrenalin
B vitamin A
C insulin
D thyroxin
E vitamin C
The increase in width of blood vessels in the mammalian skin at high temperatures is known as
A vasodilation
B sweating
C vasoconstriction
D shivering
E evaporation
The cup-shaped part of the Bowman’s capsule contains
A nephridium
B glomerulus
C loop of Henle
D nephron
E convoluted tubule
Which of the following takes place during the process of detoxication in the liver?
A Poisonous substances in the body are converted into harmless substances
B Fats and oils are broken into finer particles through emulsification
C Excess glucose in the blood are converted into glycogen and stored
D Worn- out red blood cells are broken down
E Enough heat is generated to sustain the activities of the liver
The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known
A filtration
B reabsorption
C haemolysis
D osmosis
E dialysis
Which of the following are components of glomerular filtrate?
A All the components of Blood except mineral salts
B Water and salt only
C All the components of blood except plasma protein and cells
D Plasma proteins, red and white blood cells
E Blood cells, amino acid, salts and nitrogenous wastes.
Breathing movement in mammals is accompanied by regular movements of the diaphragm and the
A intercostal muscles
B vertebral column
C clavicle
D pleural cavity
E floating ribs
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