Mutations could be created by X-rays. This was found by
Muller
Morgan
Meyer
Flemming
Correct Answer :
A. Muller
Related Questions
The radicle of the seeding always grows
towards the gravity
away from gravity
neutral to gravity
towards light
Leafy trees help in preventing
Land pollution
Water pollution
Noise pollution
Air pollution
Who was the first scientist/doctor who attempted vaccination?
Joseph Lister
Robert Koch
Elie Metchnikoff
Edward Jenner
Eugenics is the application of genetics to improve
crop plants
fruit trees
cattle
human beings
The development of new organs is termed
Parthenogenesis
Morphogenesis
Histogenesis
Paedogenesis
The hormone that is responsible for secondary sexual character in the male is
oestrogen
progesterone
testosterone
prolactin
Which among the following may carry rabies?
Cat
Dog
Fox
All the three
Pulse rate is measured in the wrist by observing the jerks of blood In the
veins
capillaries
arteries
nerves
Which one of the following cells helps in storing water and food materials?
Parenchyma cell
Flame cell
Nematoblast
None of the above
Enzymes are produced by
endocrine glands
exocrine glands
liver
spleen
An organism eating its own species is called
carnivore
detritivore
cannibal
herbivore
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
The first person to observe the bacteria, protozoa and spermatozoa under the microscope was
Theodore Schwann
Matthias Schleidon
Robert Hooke
Leuwenhoek
Malnutrition is due to
undernourishment
want of balanced diet
overfeeding
All the above
The cavities of the brain are filled with
Blood
Lymph
Water
Cerebrospinal fluid
Plantain is
a tree
an annual herb
a perennial herb
a shrub
Tetrodotoxin is a potent poison that
erodes blood vessels
blocks conduction of nerve impulses causing respiratory paralysis
produces damage to the kidneys
produces intestinal bleeding
Organisms that live in the deep sea are mainly
Herbivores
Carnivores
Detritivores
None of the above
Which of the following is a disease of brain?
SARS
AlDS
Diabetes
Alzheimer's
The theory that all animals and plants are made up of cells and they could arise only from pre-existing cells was propounded by
Robert Hooke
Matthias Schleiden and Theodore Schwann
Purkinije
Leuwenhoek
Baldness is seen only in the males because
it is a male disorder
it is linked with male Y chromosome
it is influenced by male hormone
females cover it up with wigs
Leaves Call off branches In the winter because of
fall in atmospheric pressure
completion of the duration of life of the plant
formation of separation (absciss layer) just outside the cork
shortening of day time
Total number of amino acids in plants is
10
20
30
Plenty
Somato Tropic Hormone is concerned with
Body growth
Metamorphosis
Digestion
Reproduction
Metastasis' is the process by which
cells divide rapidly under the influence of drugs
cancer cells spread through the blood or lymphatic system to other sites or organs
the chromosomes in cell nuclei are attached to the spindle before moving to the anaphase poles
cance cells are successfully inhibited to divide any futhere
Which of the following is a vector-borne disease for which a special programme has been launched by the Govt. of India?
Polio
HIV / AIDS
Malaria
Cancer
The smallest size of a cell which can be seen directly by the eye is
One micron
10 micron
100 micron
1000 micron
Whooping cough is caused by
Salmonella
Bacillus pertussis
Variola
Vibriona
The oldest era is
Palaeozoic
Mesozoic
Cenozoic
Proterozoic
The small pox vaccine was discovered by
Louis Pasteur
Edward Jenner
John
Harvey