Question 1 of 20 2,099 total questions
The central nervous system in humans is made up of the
A brain, medulla oblongata and nerves
B brain, spinal cord and cranial nerves
C brain and spinal nerves
D brain and spinal cord
Which of the following conditions is responsible for the presence of sugar in the blood of diabetic patients?
A High intake of carbohydrates
B Low production of insulin
C Low intake of carbohydrates
D High production of insulin
An organism which maintains a constant temperature irrespective of environmental temperature fluctuation is
A an insect
B a mammal
C an amphibian
D a fish
Which of the following substances is not an excretory product in mammals?
A Carbon dioxide
B Water
C Faeces
D Urea
The ventricles of the mammalian heart have thicker
A ventricles are larger
B ventricles receive more blood
C ventricles pump blood to longer distances
D auricles have smaller capacity
Which of the following organs in mammals is not excretory in function?
A Liver
B Kidney
C Pancreas
D Lungs
Gaseous exchange occurs through the following structures in some organisms except
A spiracle and tracheae
B alveoli and lungs
C stomata and lenticels
D chloroplast and plastids
Which of these factors does not contribute towards
A Root pressure
B Capillarity
C Transpiration pull
D Turgor pressure
Which of the following heart structures is best adapted
A One auricle and one ventricle
B Two auricles and one ventricle
C Two auricles and partially divided ventricle
D Two auricles and two ventricles
Support in young herbaceous plants is provided by
A translocation
B guttation
C turgidity
D osmosis
The aspects of growth in living organisms include all
A increase in dry weight
B reversible increase in size
C irreversible increase in length
D increase in number of cells
Which of the following processes does not contribute
A Cell division
B Cell enlargement
C Cell differentiation
D Cell plasmolysis
Which of the following environmental conditions is ideal
A Hot, dry weather
B Windy weather
C Cold, dry weather
D Cool, humid weather
During the process of osmosis a semi-permeable
A only solute molecules to pass through it
B both solute and solvent molecules to pass through it
C only solvent molecules to pass through it
D only gaseous molecules to pass through it
The physical process which occurs when a red blood
A crenation
B plasmolysis
C turgidity
D haemolysis
The folded portion of mitochondrion is called
A cristae
B cell membrane
C nucleolus
D partition
Which of the following parts of a cell is not an organelle?
A Food vacuole
B Mitochondrion
C Cell wall
D Nucleus
The structure used for movement in Amoeba is
A cilia
B pseudopodia
C flagella
D endoplasm
Which of the following statements is correct about
A They are composed of specialized cells
B They perform a certain overall function
C They are not found in plants
D Unicellular animals have few organs
The epidermis of the mammalian skin is an example
A prevent light from passing through them
B have a similar structure and function
C prevent excessive loss of water
D are impregnated with keratin
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