The joint of radio-ulna with the upper arm is
hinge joint
pivot joint
socket joint
none of these
A.
hinge joint
In hinge joint a condyle at the end of one bone fits in the depression of other bone in such a manner that the bone with condyle can swung like a loop on its hinge only in one direction e.g. leg elbow joint, ankle joint and knee joint etc.
Abnormal growth of the tumor in cancer is due to
abnormal mitotic division
accumulation of body fluid
abnormal meiotic division
metastasis
When plants/animals are infected with virus, they may produce an anti-viral substance that is capable of inhibiting the multiplication of that virus. Identify the correct name ofthis substance
Virion
Antivirion
Antigen
Interferon
Match the tissues/molecules mentioned in column I with those of their degrading enzymes mentioned in column II and select the correct option from the given codes.
Column I Column II
A. Cell wall (i) Proteases
B. RNA (ii) Pectinases
C. Histone (iii) Ribonucleases
D. Pectin (iv) Cellulase
A-(iv), B-(iii), C-(i), D-(ii)
A-(ii), B-(i), C-(iv), D-(iii)
A-(i), B-(ii), C-(iii), D-(iv)
A-(iii), B-(iv), C-(ii), D-(i)