The theory of 'jumping genes' was propounded by
Gregor John Mendel
Thomas Hunt Morgan
Barbara McClintock
Watson and Crick
Correct Answer :
C. Barbara McClintock
Related Questions
Those small organisms which float on the surface of water are called
Necton
pH indicators
Plankton
Benthos
Loss of blood is minimized due to blood
clotting
receding
healing
drying up
What are halophytes?
plants found in fresh water
plants growing in saline conditions
mesophytic plants
desert plants
The first person to observe the bacteria, protozoa and spermatozoa under the microscope was
Theodore Schwann
Matthias Schleidon
Robert Hooke
Leuwenhoek
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
Legumes are highly nutritious because they are rich in
starch
oils
fat
protein
The pathogenic organisms of an infected person are destroyed by the action of
erythrocytes
leucocytes
blood platelets
all of these
The involuntary muscles are controlled by the
Cerebrum
Cerebellum
Medulla oblongata
Pons
Lactose and Rennin, the enzymes required to digest milk, disappear in the human body by the age of _______ years.
2
3
5
8
The disease Goitre is caused in persons who do not have in their diet sufficient
calcium
sodium
iodine
iron
The ultimate substances to which the carbohydrates are degraded are
amino acid
glycerol
glucose
maltose
Vaccine for influenza has been discovered by
Khorana
John
Mittel
Salk
Accepted theory for the origin of life is
Cosmozoic theory
Biogenesis
Abiogenesis
Oparin's theory
The plant hormone which promotes ripening of fruits is
auxin
ethylene
gibberellin
cytokinin
Saffron is the dried ________ of the saffron plant.
fruit
aril
stigmas and tops of styles
tender leaves and sprouts
Hormones are carried from their place of production by
Ducts
Blood
Lymph
Mucus
Synthesis of nutrients by green plants is called
photo-oxidation
photo-respiration
photo-synthesis
photo-periodism
The country's first 'brain bank' that can store up to 300 human brains has been opened at
Alleppey
Bengaluru
Bhubaneshwar
Mumbai
Sex linked genes are carried by
X-chromosomes
Y-chromosomes
different part of X- and Y-chromosomes
autosomes
The 'germ theory of disease' was propounded by
Joseph Lister
Robert Koch
Louis Pasteur
Jacob Heule
Kwashiorkor' is caused by deficiency of
carbohydrates
proteins
fats
vitamins
Scrub jungle Is characterised by
heavy rainfall
no rainfall
poor rainfall
none of the above
Necrosis is a symptom which is recognised by
pattern colouration on leaves
little leaves
out growth
death of tissues
The insects do not have blood pigments because
there is no blood
blood does not have a respiratory function
tissues have pigments
pigments are elsewhere
Formation of blood
Histolysis
Histogenesis
Haemopoiesis
Haemolysis
Sadabahar, a common weed, is the raw material that provides the source of medicines used In the treatment of
gout
blood cancer
coronary heart disease
polio
Which of the following diseases is not caused by a virus?
Cancer
Rabies
AlDS
Severe Acute Respiratory Syndrome (SARS)
The eland having endorine as well as exocrine function is
Adrenal gland
Thyroid gland
Pituitary gland
Pancreatic gland
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
If a father has blood group A and the mother has blood group 0, which one of the blood groups may be found in their progeny?
A
AB
O
Both (a) and (c)