171. During the process of blood coagulation vitamin K helps in the

A Formation of thromboplastin
B Formation of prothrombin
C Conversion of prothrombin to thrombin
D Conversion of fibrinogen to fibrin
Answer :   Formation of prothrombin
Discuss Question

172. Melanin protect from

A U.V. rays
B Visible rays
C Infrared
D X-rays
Answer :   U.V. rays
Discuss Question

173. Which type of connective tissue present in the wall of bronchiols

A White fibrous C.T.
B Areolar C.T
C Yellow fibrous C.T.
D Reticular C.T
Answer :   Yellow fibrous C.T.
Discuss Question

174. Which bone derived from skin

A Skull bones
B Clavicae
C Flat bones
D All of the above
Answer :   All of the above
Discuss Question

175. Mairr character for the distinction between male and female cockroach

A Antennae
B Mandibles
C Anal cerci
D Anal styel
Answer :   Anal styel
Discuss Question

176. Which type of sweat glands secrete a pale sweat

A Eccrine
B Apocrine
C Holocrine
D Endocrine
Answer :   Apocrine
Discuss Question

177. Which type of cell is known as cart wheel cell

A Mast cell
B Plasma cell
C Reticular cell
D Adipse cel
Answer :   Plasma cell
Discuss Question

178. The body cavity of cockroach is called

A Pseudocoel
B Coelom
C Hydrocoel
D Haemocoel
Answer :   Haemocoel
Discuss Question

179. Transverse channels present in long bones of mammals

A Osteal's canal
B Haversian's canl
C Volkmann's canal
D Vascular canal
Answer :   Volkmann's canal
Discuss Question

180. The cockroach of genus Blatta is also called

A German cockroach
B Australian cockroach
C Oriental cockroach
D American cockroach
Answer :   German cockroach
Discuss Question


Practice More MCQ Question on Biology Section