Leafy trees help in preventing
Land pollution
Water pollution
Noise pollution
Air pollution
Correct Answer :
C. Noise pollution
Related Questions
Vessels leaving the heart are
veins
arteries
capillaries
lymph ducts
One of the following is often called the master gland. Which one is it?
Thymus
Islets of Langerhans
Pituitary
Thyroid
Coagulation of blood in vessels is prevented during normal circulation by
heparin
prothrombin
plasmogen
thromboplastin
Organisms which synthesise their own food are called
autotrophs
heterotrophs
saprotrophs
auxotrophs
The spider spins its web from a liquid secreting from its
posterior silk gland
posterior abdomen glands
mouth
salivary glands
Vitamins A and C are predominantly present in
brinjal
lady's finger
potato
tomato
Translocation of food takes place in plants through
xylem
phloem
cambium
cortex
The function of connective tissue is
to hold the other tissues together
to facilitate diffusion
to help transportation of dissolved material from capillaries to epithelial cells
protection
Excess of amino-acids are broken down to form urea in the
Liver
Kidney
Spleen
Rectum
Enzymes are produced by
endocrine glands
exocrine glands
liver
spleen
The plant cells are surrounded rigidly by
plasmalemma
cell membrane
cell wall
plasma membrane
Lamarck's theory of inheritance of acquired characters was challenged by
August Weismann
Hugo de Vries
Herbert- Spencer
Carl Linnaeus
Which among the following is a balanced fertiliser for plants?
Urea
Ammonium Sulphate
Nitrates
Compost
The artificial kidney is a
machine
transplant
another's kidney
other kidney form same body
Hypogeal germination is found in
castor
onion
bean
bengal gram
Plant diseases are spread by
insects
man
wind
All the above
Saffron is the dried ________ of the saffron plant.
fruit
aril
stigmas and tops of styles
tender leaves and sprouts
Haemoglobin is dissolved in the plasma of
frog
fish
man
earthworm
What is an antigen?
Toxic substance
A kind of protein
Blood platelets
Blood corpuscles
Phototropism means that plants react to the direction of
sound
wind
light
gravity
One of the following is called a feminine hormone. Which one is it?
Oestrogen
Testosterone
Pituitrin
Thyroxine
The endocrine glands secrete
bile
harmones
sweat
genes
Small pox is caused by
bacteria
fungus
virus
algae
Veins carry blood
towards the heart
away from the heart
both to and from the heart
only around the heart
Savannah is
grass land
desert
forest
snow clad mountains
Necrosis is a symptom which is recognised by
pattern colouration on leaves
little leaves
out growth
death of tissues
Antibodies are formed in
lymph nodes
red bone marrow
spleen
liver
Pulse rate is measured in the wrist by observing the jerks of blood In the
veins
capillaries
arteries
nerves
Which among the following is not a degenerative disease?
Diabetes
Stroke
Myocardial infraction
Rabies
The biologist who believed in the spontaneous creation of microorganisms was
Leuwenhock
Needham
Spallanzeni
Pasteur