The study of ecology with pyramids was invented by
Darwin
Elton
Odum
Joshua
Correct Answer :
B. Elton
Related Questions
Saliva flows at the sight of food. This action is
involuntary
voluntary
a reflex
causative
Whale reproduces by
ovipary
vivipary
ovovivipary
fission
The rate of heartbeat is accelerated by the hormone
adrenaline
acetylcholine
thyroxine
pituitrin
The specific gravity of blood is
lower than water
higher than water
same as water
many times that of water
Who was the first scientist/doctor who attempted vaccination?
Joseph Lister
Robert Koch
Elie Metchnikoff
Edward Jenner
The grouping o( blood is based on substances called
antibodies
antigens
antitoxin
enzymes
Consumption of potassium cyanide leads to total stoppage of cellular activity in the human body, as it cripples the
heart
lungs
kidneys
mitochondria
The thrombocytes are associated with
blood coagulation
transport of respiratory gases
removal of nitrogenous wastes
All the above
Nephantis is popularly called
coconut caterpillar
brown plant hopper
tobacco caterpillar
pulse beetle
The olfactory area is concerned with
smell
sight
hearing
speech
Bats can fly in the dark because
they have a better vision in the dark
the light startles them
they produce high pitched sounds called ultrasonics
None of the above
The diseases that are caused by lack of vitamins are called
deficiency diseases
communicable diseases
epidemics
tropical diseases
Which one of the following is not an essential micronutrient for plants?
Boron
Zinc
Sodium
Copper
Rh+ blood is due to genes which are
dominant
recessive
codominant
neutral
The bone cells are connected with each other by
Haversian canal
canaliculi
capillaries
matrix
Heart is made up of
nonstriated muscle
cardiac muscle
connective tissue
nervous tissue
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
The organ that produces antibodies in our body is
pancreas
salivary gland
liver
gonads
Phototropism means that plants react to the direction of
sound
wind
light
gravity
The normal systolic blood pressure is
140
120
180
80
Plants grown in darkness show
stout stem
long internodes
bigger leaves
no growth at all
Which one of the following is viral disease?
Syphilis
Influenza
Lock Jaw
Typhoid
Which of the following plays an important part in photosynthesis?
Chloroplast
Centrosome
Tonoplast
Nematoblast
Blood plasma from which fibrinogen is removed is known as
serum
blood concentrate
lymph
antibody component
Development without fertilization is called
parthenogenesis
asexual reproduction
sporulation
budding
The artificial kidney is a
machine
transplant
another's kidney
other kidney form same body
One of the following disease cannot be prevented by the DPT (triple-antigen) immunization of children.
Tetanus
Tuberculosis
Whooping cough
Diphtheria
When one gene controls two or more different characters simultaneously, the phenomenon is called
Apomixis
Pleiotropy
Polyploidy
Polyteny
A child goes on vomiting profusely and develops symptoms of diarrhoea. Chances are that in the child's blood serum there is a drop In
calcium
iron
sodium
phosphorus
During dehydration, the human body is usually lost by the human body is
sugar
sodium chloride
potassium chloride
iodine