Question 1 of 20 109 total questions
The parts that supply food and water to the developing embryo are labelled
A I and II
B III and V.
C V and VI
D I and III
Which of the following statements about the development of the foetus is not correct?
A The circulatory system of the foetus is directly connected to the maternal blood vessels
B The foetus depends on the mothers blood for its food and oxygen
C The foetus is surrounded by a water sac
D Food and oxygen are carried across the placenta to the embryo’s blood
The relationship between the retina and the brain is similar to that between the
A cochlea and the auditory nerve
B cochlea and the brain.
C cochlea and the semi-circular canals
D eardrum and the brain
The ear pinna is strengthened by
A blood pressure.
B cartilage
C bone
D turgor pressure
The organ that receives reduced flow of blood during vigorous exercise is the
A brain
B heart
C lung
D limb
The excretory system in mammals consists of the following parts except
A two kidneys
B two ureters
C two bladders
D one urethra
The following characteristics are associated with the mammalian lungs except
A large surface area
B expandable lungs
C moist surface
D highly vascularized
A pulse is best described as
A contraction of arteries to let out blood.
B contraction of veins to allow blood into them
C dilation of arteries to accommodate blood rushing through.
D pumping action of the heart to move blood round the body.
The inorganic components of bone consist of
A magnesium, sodium and calcium
B magnesium, phosphorus and calcium
C sodium, phosphorus and calcium,
D potassium, magnesium and calcium
The axial skeleton is composed of the
A skull and vertebral column
B limbs and girdles
C atlas and axis.
D radius and ulna
Excretion in Paramecium sp. is by diffusion because
A its habitat is water and moist places
B it has simple, small and few internal organs
C it has a large surface area to volume ratio.
D it has a large efficient meganucleus.
In cellular respiration energy is made available to organisms by
A removal of a phosphate group from ADR
B breaking off a phosphate group from ATP
C adding a phosphate group to glucose
D breaking off a hydrogen ion from NADPH
The mechanism of opening and closing of stomata in plants is based on
A turgidity and diffusion
B turgidity and flaccidity
C osmosis and diffusion
D diffusion and flaccidity
Which of the following processes involves diffusion?
A Opening and closing of stomatal pores
B Turgidity of herbaceous plants
C Absorption of water through the root hairs
D Absorption of digested food into the villi
Which of the following characteristics do fungi share in common with animals?
A Presence of digestive tract
B Movement from one place to another
C Storage of carbohydrates as glycogen
D Movement of centrioles during cell division
A typical plant cell is mainly distinguished from an animal cell by the possession of
A chloroplast and nucleus
B cell wall and cytoplasm
C chloroplast and cell wall
D cell wall and mitochondrion
Which of the following cell types has the least number of mitochondria?
A Cardiac cells of the heart
B Cells of the cornified layer
C Muscle cells of the bladder
D Muscle cells of the diaphragm
The organelle which eliminates water from the body of a protozoan is the
A plasma membrane
B contractile vacuole
C nucleus
D cell wall
An organism that operates at the cellular level of organization, carries out its physiological activities by
A cell membrane
B organelles
C small size
D cytoplasm
Which if the following organisms is not classified as an animal?
A Amoeba
B Paramecium
C Euglena
D Obelia
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