Decomposition of organic matter is due to
Virus
Fungi
Bacteria
None of these
Correct Answer :
C. Bacteria
Related Questions
Pneumonia is ,a bacterial disease caused by the type of bacteria called
Bacilli
Cocci
Sprilli
Vibrio
The artificial kidney operates on the principle of
dialysis
diffusion
osmosis
active transport
The biologist who believed in the spontaneous creation of microorganisms was
Leuwenhock
Needham
Spallanzeni
Pasteur
Plants grown in darkness show
stout stem
long internodes
bigger leaves
no growth at all
Rh+ blood is due to genes which are
dominant
recessive
codominant
neutral
Genes are arranged in chromosomes
In clusters
In binary fashion
In linear fashion
Scattered
Nephrons are found inside
Liver
Lung
Brain
Kidneys
The enzyme that is necessary to bring about clotting of blood is
peptidase
amylase
lipase
thrombokinase
The thermoregulatory centre in the human brain is the
Pituitary
Spinal cord
Cerebellum
Hypothalamus
Which of the following diseases is caused by the deficiency of iron in human body?
Anaemia
Scurvy
Dermatosis
None of these
The mode of nutrition in which particulate food is devoured is
holozoic
holophytic
saprophytic
parasitic
The buffer substance in blood is
Calcium carbonate
Carbon dioxide
Sodium bicarbonate
Ammonia
During dehydration, the human body is usually lost by the human body is
sugar
sodium chloride
potassium chloride
iodine
The spider spins its web from a liquid secreting from its
posterior silk gland
posterior abdomen glands
mouth
salivary glands
Cretinism is due to the disorder of the glands
Thymus
Parathyroid
Thyroid
Adrenal
Bacteria utilising radiant energy to prepare food are
chemosynthetic bacteria
heterotrophic bacteria
photosynthetic bacteria
free living bacteria
The cellular and molecular control o( programmed cell death is known as
Apoptosis
Ageing
Degeneration
Necrosis
The method of inducing artificial immunity was discovered by
Jenner
Tolstoy
Pasteur
Morgan
Niche' refers to
place of living
type of food
place of living and type of food
food and movement
Who discovered the electron microscope?
Knoll and Ruska
Rudolf and Kolliker
Robert Hooke
CP Swanson
Agroecology relates
crops and productivity
crops and environment
crop productivity and physiology
crop resistance to climatic changes
Waldeyer gave the name
microsome
chromosome
ribosome
lysosome
Charles Darwin was influenced in his work by
Wallace
Lamarck
Malthus
Mendel
When the earth was formed it had an atmosphere with
Hydrogen, Oxygen and Nitrogen
Water Vapour, Hydrogen and Oxygen
Oxygen, Carbondioxide and Nitrogen
Water Vapour, Ammonia and Methane
The closing and opening of the leaves of Mimosa pudica (Touch me not) plant is due to _______ movement.
chemonastic
seismonastic
thermonastic
photonastic
Vitamins A and C are predominantly present in
brinjal
lady's finger
potato
tomato
Warm-bloodedness
means, animals living in warm climates
means, the warming up of blood as the temperature increases during day time
is characterised by constant body temperature
is shown by reptiles
Lizards, snakes, crocodiles and turtles belong to the class
Aves
Reptilia
Mammalia
Amphibia
The two minerals required to keep teeth and bones intact and in good condition are
lead and zinc
calcium and phosphorus
copper and sulphur
iron and iodine
Which one is a water-soluble vitamin?
A
C
D
E