Question 1 of 20 2,099 total questions
Insulin is produced by the
A adrenal gland
B thyroid gland
C pituitary gland
D pancreas
The endocrine gland which co-ordinates the action of other glands and is also associated with the nervous system is the
A adrenal gland
B thyroid gland
C pituitary gland
D thymus gland
The persistent Presence of glucose in a person’s urine indicates malfunctioning of the
A heart
B bladder
C pancreas
D stomach
The malplghian body of the mammalian kidney is made up of
A cortex and medulla
B Bowman's capsule and loop of Henle
C glomerulus and Bowman's capsule
D pelvis and pyramid.
Which of the following blood vessels have valves?
A Capillary
B Artery
C Vein
D Arteriole
Which of these statements about white blood cells is true? They
A aid clotting of blood
B carry oxygen round the body
C are the most numerous blood cells
D are large nucleated cells
The fine adjustment of the light microscope is used to
A admit more light into the microscope
B focus the object under low power
C focus the object under high power
D raise the stage upwards
Which of the following processes is a form of sexual reproduction?
A Budding by yeast cells
B Conjugation in Spirogyra
C Binary fission in Amoeba
D Rhizome production by ginger
Growth includes the following processes except
A differentiation
B enlargement
C mitosis
D meiosis
Yeast is added to the dough during the preparation of bread because it produces
A ethanol
B heat
C carbon dioxide
D carbohydrate
The dominant stage in the life cycle of a fern is the
A antheridium
B gametophyte
C prothallus
D sporophyte
Which of the following processes takes place when a plant cell is put in a hypotonic solution?
A Water moves into the cell and the cell bursts
B Water leaves the cell and the cell becomes flabby
C Water moves into the cell and the cell becomes turgid
D The cell becomes plasmolysed
The organelle involved in the transport of substances within a cell is?
A Golgi body
B endoplasmic reticulum
C ribosome
D mitochondrion
Respiration is an essential life process providing the living cells with
A oxygen
B sugars
C energy
D carbon dioxide
The hereditary material in a living organism is located inside the
A protein wall
B cytoplasm
C nucleus
D lysosome
The transfer of ripe pollen grains from the anther to the stigma of the same flower is termed
A fertilization
B self-pollination
C reproduction
D conjugation
Organisms that interbreed to produce fertile offspring belong to the same
A class
B family
C species
D order
A change in the environment of an organism is termed
A sensitivity
B impulse
C response
D stimulus
Which of the following orders correctly represents the trend in eutrophication?
A Lack of oxygen → Death of aquatic organisms → Massive algal growth
B Excess nitrates and phosphates → Massive algal growth → Lack of oxygen → Death of aquatic organisms
C Heavy mineralization → Lack of oxygen → Massive algal growth
D Excess nitrates and phosphates → Lack of oxygen → Massive algal growth → Death of aquatic organisms
The physical and chemical factors which affect the life of organisms in an environment are described as
A biotic
B edaphic
C abiotic
D physiographic
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