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Question 1 Report
Normally the flow of blood is NEVER from
Question 3 Report
An anemometer is an instrument for measuring
Question 4 Report
The presence of a diastema in the jaw bone indicates that the mammal lacks the teeth suitable for
Question 7 Report
If an animal is very active and has good muscular control, it is likely to have well-developed
Question 9 Report
Which parts provide food for the developing chick?
Question 10 Report
Which of the following cell constituents is NOT common in both plants and animals?
Question 11 Report
If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows
Question 13 Report
Exoskeleton is NOT found in the
Question 14 Report
A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin?
Question 16 Report
The character-producing factors in living organisms are
Question 17 Report
The removal of a man’s pancreas by surgical operation can affect only the digestion of
Question 19 Report
Which of the following statements is NOT true of the piliferous layer of root? It
Question 21 Report
Which of the following types of vertebrae occur in equal numbers in the rabbit, rat and man?
Question 22 Report
Osmosis can be defined as the movement of
Question 23 Report
Spirogyra reproduces vegetatively by
Answer Details
Spirogyra reproduce using sexual or asexual reproduction methods. The process of reproduction varies depending on species of spirogyra. In vegetative varieties, reproduction occurs through the process of fragmentation, which involves the transformation of spirogyra through intercalary mitosis to produce new filaments.
Question 24 Report
Anaerobic respiration in yeast produces
Question 25 Report
Which of the following sequences represents process of blood clothing? 1. Fibrins forms a network of threads 2. Red blood cells are caught and clot is formed 3. Fibrinogen in plasma changes into fibrin 4. Blood is exposed to air
Question 26 Report
The axial skeleton of a mammal does not include the bones of the
Question 27 Report
Fehling's solution will readily change colour from blue to reddish colour when it is
Question 28 Report
Spirogyra and mucor can be grouped together as Thallophyta because
Question 29 Report
The structure above represents a quill feather. The structure labelled 'M' is the
Question 30 Report
Underground stems which grow horizontally through the soil are
Question 31 Report
The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called
Question 33 Report
Which of the following is NOT a waste product of plants?
Answer Details
Plants need to excrete excess carbon dioxide and oxygen. Carbon dioxide is a waste product of aerobic respiration in plant cells. Oxygen is a waste product of photosynthesis
Question 35 Report
Mosses, liverworts and ferns can be grouped together because they
Question 36 Report
The mouth parts of the housefly are adapted for
Answer Details
House flies can be easily identified by the four dark, longitudinal stripes on top of the thorax, or middle body region. They vary in length from l/8-l/4 of an inch. Their mouth parts are adapted for sponging up liquids; they cannot bite. These flies can only ingest liquid food. They feed on attractive solid food by regurgitating saliva on it. The saliva liquifies the solid material which is then sponged up with the proboscis. They require water since they are continually salivating and voiding liquids. Fly specks seen on many surfaces visited by house flies are the excreted wastes.
Question 37 Report
In the Burret test, some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive results?
Question 40 Report
Which of the following lists of diseases, their causes and transmission is CORRECT?
Question 41 Report
Which of the following is NOT regarded as a pollutant on land or in the air?
Question 43 Report
Green plants are important in the ecosystem because they are
Question 48 Report
The dorsal and anal fins of fish are used for
Question 49 Report
A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is
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