When one gene controls two or more different characters simultaneously, the phenomenon is called
Apomixis
Pleiotropy
Polyploidy
Polyteny
Correct Answer :
B. Pleiotropy
Related Questions
The part of the eye behind the lens is filled with
aqueous humor
vitreous humor
lymph
blood
The theory of use and disuse was used to explain evolution by
Lamarck
Darwin
De Vries
Wallace
The term 'Fauna' means
plant kingdom
animal kingdom
neither
Both
Pacemaker is the
Sinu-auricular node
Auriculo-ventricular node
Bundle of His
Purkinje fibres
The artificial kidney operates on the principle of
dialysis
diffusion
osmosis
active transport
The spider spins its web from a liquid secreting from its
posterior silk gland
posterior abdomen glands
mouth
salivary glands
Human blood is oxygenated and purified in the
heart
lungs
liver
kidneys
Wallace's line is a line
drawn by Darwin
across the mountains
between two zoo-geographical areas
between different classes of animals
The protoplasm of a child is exactly the same as that of its
mother
father
grandfather
identical twin
Which one of the following is both an exocrine and an endocrine gland?
Gastric glands
Pancreas
Salivary glands
Liver
Darwinism does not explain
progression
retrogression
usefulness of all organs
presence of vestigial organs
Colour vision is made possible by the cells in the retina called
rods
cones
fovea
blind spot
In phototropism, auxins
Promote growth of cells
Inhibit cell division
Inhibit growth of cells
Stimulate differential growth of cells
One of the following is often called the master gland. Which one is it?
Thymus
Islets of Langerhans
Pituitary
Thyroid
Polyploid wheat does not normally show an increase in
size
vigour
length of the life cycle
resistance to desease
The grouping o( blood is based on substances called
antibodies
antigens
antitoxin
enzymes
The waste product In the urine of man is
urea
uric acid
ammonia
non-nitrogenous
Stripes on the bodies of animals Indicate
mating habit
food habit
cave dwelling
matching of skin colour with the surroundings
Who coined the term gene?
Mendel
Devries
Jacob and Monod
Johanson
Diseases in plants can be caused by
virus
bacteria
fungi
All the above
Legumes are highly nutritious because they are rich in
starch
oils
fat
protein
Which among the following animals has the largest Intestine?
Cow
Lion
Monkey
Tiger
Plant diseases are spread by
insects
man
wind
All the above
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
The workers in the honey bee colony are
males
females
sterile females
intersex
Sex linked genes are carried by
X-chromosomes
Y-chromosomes
different part of X- and Y-chromosomes
autosomes
The mode of nutrition in which particulate food is devoured is
holozoic
holophytic
saprophytic
parasitic
Afforestation means
study of forests
growing new forests
destroying the forests
go into the forests
The pigment which is responsible for blood clotting is
Fibrinogen
Haemoglobin
Glucose
Blood cells
Vitamins A and C are predominantly present in
brinjal
lady's finger
potato
tomato