The rate of heartbeat is accelerated by the hormone
adrenaline
acetylcholine
thyroxine
pituitrin
Correct Answer :
A. adrenaline
Related Questions
The grouping o( blood is based on substances called
antibodies
antigens
antitoxin
enzymes
Which one is called anti-haemorrhagic vitamin?
A
C
E
K
The artificial kidney is a
machine
transplant
another's kidney
other kidney form same body
The biologist who believed in the spontaneous creation of microorganisms was
Leuwenhock
Needham
Spallanzeni
Pasteur
Evergreen forests are confined to
Equatorial region
Temperate region
Alpine region
Arctic region
The germ theory of diseases was put forward by
Louis Pasteur
Luister
Leuwenhoek
Flemming
What are the symptoms of 'Pellagra'?
Colour blindness
Rickets
Patches of skin
Soft bones
Late Blight' is a disease that affects the _______ crop.
coconut
cashew
potato
pepper
Which among the following diseases is not caused by viral infection?
pneumonia
small pox
mumps
active transport
Sexual selection theory was propounded by
Wallace
De Vires
Lamarck
Charles Darwin
In one minute normally the heart beats
60 times
80 times
100 times
72 times
Darwinism does not explain
progression
retrogression
usefulness of all organs
presence of vestigial organs
Rate of mutation can be increased in plants by
More manure
More pesticides
X-ray
More light
Enzymes are produced by
endocrine glands
exocrine glands
liver
spleen
Which among the following may carry rabies?
Cat
Dog
Fox
All the three
The thrombocytes are associated with
blood coagulation
transport of respiratory gases
removal of nitrogenous wastes
all the above
The waste product In the urine of man is
urea
uric acid
ammonia
non-nitrogenous
The protein synthesis takes place in
Ribosomes
Chromosomes
DNA
None of these
What are oncogenes?
a dominant gene
a set of genes which produce cancer
a gene present in the X-chromosomes causing haemophilia
a recessive gene
Who was the first scientist to use an instrument for biological studies in 1665?
Robert Hooke
Schwann
Schleiden
None of the above
The mouth of a river opening into the sea is termed as
shore line
littoral zone
continental shelf
estuary
Fishes send out their nitrogenous waste as
ammonia
urea
uric acid
sweat
Which one of the following seeds can benefit a patient of diabetes mellitus by normalising his blood sugar level?
Coriander seeds
Fenugreek seeds
Cumin seeds
Mustard seeds
Spiders can take only
solid food
liquid food
plant juice
flesh of dead animals
Adaptation for flying is termed as
aquatic
volant
fossorial
cursorial
Biologists have so far known, found and identified a large number of species in the plant and animal kingdom. In terms of numbers, the largest found and identified so far is from among the
fungi
plants
insects
bacteria
The pH of normal urine of man ranges from
6 - 8
4.5 - 6
2.5 - 6
8 10
Dr Khorana's work relates to
synthesis of simple DNA
genetic code
reduction of mutation
synthesis of RNA from bacterial cell
Which of the following diseases is caused by the deficiency of iron in human body?
Anaemia
Scurvy
Dermatosis
None of these
The hormone that contains iodine is
Prolactin
Vasopressin
Thyroxine
Adrenalin