one pair of sex chromosomes
only one sex chromosome
no sex chromosome
only autosomes
B. only one sex chromosome
towards the heart
away from the heart
both to and from the heart
only around the heart
Land pollution
Water pollution
Noise pollution
Air pollution
Thymus
Parathyroid
Thyroid
Adrenal
nyctolopia
myopia
glaucoma
colour blindness
vitamin B complex
vitamin D
vitamin A
vitamin C
Cancer
Rabies
AlDS
Severe Acute Respiratory Syndrome (SARS)
Phototropism
Photoperiodism
Vernalisation
Thermoregulation
heliotropism
geotropism
haptotropism
gardening
stains
pH indicators
weather indicators
soil indicators
decrease in haemoglobin level
rheumatic heart disease
increase in haemoglobin level
non-clothing of blood
his own body
his friend's body
a corpse
a laboratory animal
rods
cones
fovea
blind spot
Palaezoic
Cenozoic
Mesozoic
Proterozoic
Johanson
Flemming
Sutton and Boveri
Morgan
lower than water
higher than water
same as water
many times that of water
3 k cal
2 k cal
4.2 k cal
8.1 k cal
crop rotation
chemicals
quarantine
biological control
Mendel and 'Darwin
Theodore Schwann and Matthias Schleiden
Virchow and Purkinje
porter and Palade
tetanus
diphtheria
whooping cough
rabies
left as they are
reduced
increased
neutralised
clotting
receding
healing
drying up
vitamin B-complex
vitamin B2
vitamin A
vitamin E
it is a male disorder
it is linked with male Y chromosome
it is influenced by male hormone
females cover it up with wigs
bacteria
virus
fungus
chromosomal imbalance
A
B
C
K
clotting
receding
healing
drying up
nerve cells
a pigment
nerve fibres
melanin
Epinephrine
Cortisone
Thyroxine
Insulin
deficiency diseases
communicable diseases
epidemics
tropical diseases
chemosynthetic bacteria
heterotrophic bacteria
photosynthetic bacteria
free living bacteria