The country where commercial production of cultured pearls is undertaken on large scale is
India
Mexico
Netherlands
Japan
Correct Answer :
D. Japan
Related Questions
The endocrine glands secrete
bile
harmones
sweat
genes
The buffer substance in blood is
Calcium carbonate
Carbon dioxide
Sodium bicarbonate
Ammonia
Necrosis is a symptom which is recognised by
pattern colouration on leaves
little leaves
out growth
death of tissues
Pacemaker is the
Sinu-auricular node
Auriculo-ventricular node
Bundle of His
Purkinje fibres
What do you mean by the term fauna?
plant kingdom
animal kingdom
both plant and animal kingdoms
A part of plant kingdom
In phototropism, auxins
Promote growth of cells
Inhibit cell division
Inhibit growth of cells
Stimulate differential growth of cells
Vitamin D is manufactured in a healthy human being by the action of _______ on the skin and absorbed in the blood stream.
ozone
radium
moonlight
sunlight
The Green Revolution in India owes much to
MS Swaminathan
TS Venkataraman
Norman Borlaug
Prime Minister
Riboflavin is otherwise known as
vitamin B-complex
vitamin B2
vitamin A
vitamin E
The theory of use and disuse was used to explain evolution by
Lamarck
Darwin
De Vries
Wallace
Maintenance of pregency is under the control of
Follicular stimulating hormone
Growth hormone
Estrogen
Progesterone
Development without fertilization is called
parthenogenesis
asexual reproduction
sporulation
budding
What is an antigen?
Toxic substance
A kind of protein
Blood platelets
Blood corpuscles
Fat present below the skin surface in our body acts as a barrier against
loss of heat from the body
loss of essential body fluids
loss of salts from the body
entry of harmful micro-organisms from the environment
Which of the following diseases is considered as completely eradicated from India, as no case of the same has been reported in last one year?
Polio
Tuberculosis
Cancer
Swine flu
Bio indicators are
stains
pH indicators
weather indicators
soil indicators
Xerophthalmia is a deficiency disease. Deficiency of _________ causes it.
vitamin A
vitamin B
vitamin C
vitamin E
The two German scientists who proposed the 'cell theory' were
Mendel and 'Darwin
Theodore Schwann and Matthias Schleiden
Virchow and Purkinje
porter and Palade
Which one is a water-soluble vitamin?
A
C
D
E
The gestation period for the elephant is
10 months
15 months
22 months
30 months
The grouping of blood is based on substances called
antibodies
antigens
antitoxin
enzymes
One of the following disease cannot be prevented by the DPT (triple-antigen) immunization of children.
Tetanus
Tuberculosis
Whooping cough
Diphtheria
Diabetes is a disease which is
contagious
non-communicable
communicable
epidemic
The function of a cell wall is
to give definite shape to the cell
to provide mechanical strength and protection to the cell
to prevent the cell from desiccation
All the above
Scrub jungle Is characterised by
heavy rainfall
no rainfall
poor rainfall
none of the above
The plants will stop growing if the shoot tip is cut off because
shoot tip produces growth hormones
shoot tip contains meristematic cells
shoot tip is the growing part
the plant dies
Excess carbohydrates and insufficient proteins in dally diet will lead to
Kwashiorkor
Night blindness
Pernicious anaemia
Loss of hair
Viruses have
DNA only
RNA only
Either DNA or RNA
Both DNA and RNA
The equilibrium and co-ordination is looked after by which part of the brain?
Cerebrum
Medulla oblongata
Cerebellum
Olfactory lobes
What is 'atavism'?
The genes which show numerous phenolypic effects
Reappearance of traits after several generations
Effects of mutation
Intermediate inheritance of genes