The best and easy method of control of crop pests is by
crop rotation
chemicals
quarantine
biological control
Correct Answer :
A. crop rotation
Related Questions
Light compensation zone refers to
where light is available in plenty
where all light energy is used
where light is maximum
beyond which light does not penetrate
Bordetella pertussis causes
tetanus
diphtheria
whooping cough
rabies
Vitamins A and C are predominantly present in
brinjal
lady's finger
potato
tomato
The animal that excretes uric acid
Monkey
Lizard
Mouse
Elephant
Compared to the veins, the walls of arteries are
thicker
thinner
similar
very much thinner
Saliva flows at the sight of food. This action is
involuntary
voluntary
a reflex
causative
Timberline shows
a line of trees
the limit of the forest
annual rings
height of trees
Food substances are substances by
hormones
enzymes
vitamins
zymogens
A few infections like sore throat, whooping cough and tuberculosis are carried through the respiratory system. Which among the following is caused by bacteria while passing through the respiratory tract?
diphtheria
dysentery
jaundice
typhoid
The germ theory of diseases was put forward by
Louis Pasteur
Luister
Leuwenhoek
Flemming
The theory of use and disuse was used to explain evolution by
Lamarck
Darwin
De Vries
Wallace
The heart of the human embryo starts beating in the _____ week of its development.
second
third
fourth
first
Blood of cockroach is
red
bluish
greenish
colourless
Eosinophil™s are stained by
alkaline dyes
acidic dyes
neutral dyes
vital stains
Damage to hearing is caused by sounds which exceed
70 decibels
80 decibels
100 decibels
120 decibels
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
Lecuminous plants are recommended for rotation of crops because they
kill harmful insects
require little amount of water
help in Nitrogen fixation
are cash crops
Which one of the following animals stores water in the intestine?
Moloch
Camel
Zebra
Uromastix
Accepted theory for the origin of life is
Cosmozoic theory
Biogenesis
Abiogenesis
Oparin's theory
Bio indicators are
stains
pH indicators
weather indicators
soil indicators
The primary energy for living organisms is
Solar energy
Chemical energy
Mitochondria
ATP
Which among the following is the best source of proteins?
apples
butter
beans
fish
The disease in which blood clotting does not take place is known as
xerophthalmia
haemopoiesis
haemophilia
haemoerythrin
Blood pressure is measured by
Auxanometer
Stethoscope
Sphygmomanometer
Kaleidoscope
Which one of the following is viral disease?
Syphilis
Influenza
Lock Jaw
Typhoid
Oxygen transport is a function of
White Blood Corpuscles
Red Blood-Corpuscles
Blood Platelets
Plasma
Vestigeal organs are those which are
fully formed and functional
much reduced but functional
much reduced and functionless
fully formed but functionless
Which of the following diseases are not bacterial?
cholera and diphtheria
trichomonasis and malaria
tetanus and typhoid
tuberculosis and leprosy
The larva of the housefly is called
maggot
caterpillar
grub
wriggler
Which one is a water-soluble vitamin?
A
C
D
E