Question 1 of 20 50 total questions
when the two alleles present in an organism are of the same type, the genotype is described as
A heterozygous
B heterogamous
C homozygous
D homologous
During cell division, the two strands of chromosomes are joined at a point called
A spindle
B chromatid
C centromere
D aster
The region that control most of the unconscious processes of a mammalian body is the
A cerebellum
B cerebrum
C spinal cord
D medulla oblongata
A fundamental similarity between nervous and hormonal system is that both
A involve chemical transmission
B have widespread effects
C shed chemicals into the blood stream
D evoke rapid responses
Fruit enlargement can be induced by spraying young ovary with
A cytokinin, abscisic acid and ethylene
B gibberellin, ethylene and abscisic acid
C auxin, abscisic acid and ethylene
D auxin, cytokinin and gibberellin
The irreversible life process by which new protoplasm is added to increase the size and weight of an organism can be termed
A anabolism
B catabolism
C growth
D development
Exponential increase in the population of an organism is a characteristic feature off
A binary fission
B sexual reproduction
C budding
D vegetative propagation
A corn differs from a bulb in that
A its stem is the main food storage organ
B it has a flattened discshaped stem
C buds are absent in the axils of the leaves
D adventitious roots are present
The components of castor oil seed and the maize grain are similar EXCEPT for the
A number of cotyledons
B location of the embryo
C number of radicles
D number of plumules
Wind pollinated flowers usually have
A rough pollen grains
B sticky stigmas
C small and short stigmas
D long styles
The lumbar vertebra when compared with a thoracic vertebra has a
A longer neural spines
B wider neural canal
C thicker centrum
D shorter transverse process
Which of the following is the function of lymph?
A Carries hormones round the body
B Transports nutrients and oxygen from blood capil
C Distributes heat uniformly round the body
D conveys amino acids and glucose fromthe small intestine to the liver
There will be agglutination when the
A Group A serum mixes with Group A erythrocytes
B Group A serum mixes with group B erythrocytes
C Group AB serum mixes with Group O erythrocytes
D Group B serum mixes with Group B erythrocytes
The seedlings in rice field were found to have thin lanky growth with reddish leaves and poor root development. This is because the soil lacks
A sulphur
B phosphorus
C potassium
D iron
Aged erythrocytes are dissolved in the
A pancreas
B liver
C lymph nodes
D kidney
The pancreatic juice contains the enzymes amylopsin,
A pepsin and trpsinogen
B rennin and steapsin
C steapsin and trypsinogen
D steapsin and ptyalin
If a healthy potted plant is continuously kept in dim light
A the rate of respiration may equal that of photosynthesis
B more carbondioxide and water are taken in
C respiration may be halted
D the volume of oxygen released increase
In dicotyledonous stem, each companion cell is founded beside the
A endodermal cell
B xylem vessel
C sieve tube
D pericyclic fibre
The body of a snail is divided into head
A thorax and abdomen
B visceral mass and abdomen
C thorax and foot
D visceral mass and foot
The pedipalps in spiders are used for
A grasping
B walking
C feeling
D web spinning
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