The smallest size of a cell which can be seen directly by the eye is
One micron
10 micron
100 micron
1000 micron
Correct Answer :
C. 100 micron
Related Questions
Blood of cockroach is
red
bluish
greenish
colourless
Nephantis is popularly called
coconut caterpillar
brown plant hopper
tobacco caterpillar
pulse beetle
Injection of insulin causes
increase in glucose in blood
decrease in glucose in blood
increase in blood pressure
decrease in blood pressure
Development without fertilization is called
parthenogenesis
asexual reproduction
sporulation
budding
Man has ____ pairs of salivary glands.
3
4
6
8
Modern classification of the living world recognise ___________ kingdoms.
two
three
four
five
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
Stripes on the bodies of animals Indicate
mating habit
food habit
cave dwelling
matching of skin colour with the surroundings
Maintenance of pregency is under the control of
Follicular stimulating hormone
Growth hormone
Estrogen
Progesterone
Geotropism is reaction of plants to the stimulus of
earth
light
sound
gravity
When a movement of a plant organ is stimulated by contact with an object, it is termed
heliotropism
geotropism
haptotropism
gardening
The olfactory area is concerned with
smell
sight
hearing
speech
The term 'Fauna' means
plant kingdom
animal kingdom
neither
Both
Blood of cockroach is
red
bluish
greenish
colourless
The corn in an underground stem that grows
horizontally
vertically
above the soil
obliquely
Tuberculosis is caused by
tobacco
tubers
bacteria
virus
Memory is the responsibility of
cerebrum
cerebellum
medulla oblongata
spinal cord
At the end of a reaction enzymes are
left as they are
reduced
increased
neutralised
The part of the brain which is responsible for intelligence is
cerebrum
opthalmic
cochlea
semicircular canals
The following disease is prevented by triple-antigen immunization
Diphtheria
Tuberculosis
Smallpox
Mumps
The thermoregulatory centre in the human brain is the
Pituitary
Spinal cord
Cerebellum
Hypothalamus
The grey matter of the brain is so coloured because of the concentration of
nerve cells
a pigment
nerve fibres
melanin
Bordetella pertussis causes
tetanus
diphtheria
whooping cough
rabies
The bird that lays the largest egg is
crow
ostrich
cuckoo
eagle
Saliva flows at the sight of food. This action is
involuntary
voluntary
a reflex
causative
The mouth of a river opening into the sea is termed as
shore line
littoral zone
continental shelf
estuary
What do you mean by lentic biota?
Plants and animals in lakes and ponds
Plants and animals in forest
Plants and animals in sea water
Desert plants and animals
Measles and influenza are caused by
virus
bacteria
insects
nematodes
The most accepted theory of the origin of earth is the fiery origin which was propounded by
Laplace
Chamberlain
James Jean
Hoyle
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