Human blood is oxygenated and purified in the
heart
lungs
liver
kidneys
Correct Answer :
B. lungs
Related Questions
The thrombocytes are associated with
blood coagulation
transport of respiratory gases
removal of nitrogenous wastes
All the above
Savannah is
grass land
desert
forest
snow clad mountains
Which organism probably arrived first in the world?
Algae
Fungi
Protozoa
None of the above
Legumes are highly nutritious because they are rich in
starch
oils
fat
protein
Which one of the following cells helps in storing water and food materials?
Parenchyma cell
Flame cell
Nematoblast
None of the above
Man is warm-blooded, frog is cold-blooded, Which one of the following is cold-blooded?
snake
peacock
parrot
camel atmospheric pressure
Genes are made of
Carbohydrates
Proteins
Fats
Nucleotides
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
The mode of nutrition in which particulate food is devoured is
holozoic
holophytic
saprophytic
parasitic
Blood of cockroach is
red
bluish
greenish
colourless
The artificial kidney is a
machine
transplant
another's kidney
other kidney form same body
Development without fertilization is called
parthenogenesis
asexual reproduction
sporulation
budding
Blood is
acidic
alkaline
neutral
like a buffer
What is the bacterial disease in lime fruits?
Phythophthora
White rust
Citrus canker
Smut disease
The protoplasm of a child is exactly the same as that of its
mother
father
grandfather
identical twin
The dinosaurs (terrible lizards) became very successful during
Palaeozoic era
Mesozoic era
Cenozoic era
Archaeozoic era
Malarial parasite is brought to human host by
male anopheles mosquito
female anopheles mosquito
male culex
female culex
The metallic part in haemoglobin is
Copper
Molybdenum
Nickel
Iron
Cancer is induced by certain viruses called
poxviruses
adenoviruses
oncogenic viruses
herpesviruses
Afforestation means
study of forests
growing new forests
destroying the forests
go into the forests
In case of a heart attack a hormone is injected as an emergency measure. Which one is it?
Thyroxine
Vasopressin
Heparin
Insulin
The principal reason why it is better to have two eyes than one is that
by having two eyes, one can distinguish colours more easily
by having two eyes, one can easily see in the dark and dim light
this gives the man a type of vision known as mosaic vision
this enhances depth perception in the humans
Fat present below the skin surface in our body acts as a barrier against
loss of heat from the body
loss of essential body fluids
loss of salts from the body
entry of harmful micro-organisms from the environment
Who considered evolution as due to mutation?
Charles Darwin
Lamarck
Hugo de Vries
Cuvier
Chemical substances that called have effect on growth of plants are called
enzymes
catalysts
hormones
pesticides
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
Animals that feed only on dead flesh are
herbivorous
carnivorous
omnivorous
carrion-eaters
The spider spins its web from a liquid secreting from its
posterior silk gland
posterior abdomen glands
mouth
salivary glands
Tuberculosis is caused by
tobacco
tubers
bacteria
virus
The ultimate substances to which the carbohydrates are degraded are
amino acid
glycerol
glucose
maltose