• Biology - Section 1

Other than spreading malaria, anopheles mosquitoes are also vectors of

A. dengue fever
B. filariasis
C. encephalitis
D. yellow fever


Plants that grow in saline water are called

A. halophytes
B. hydrophytes
C. mesophytes
D. thallophytes


Pyorrhoea is a disease of the

A. nose
B. gums
C. heart
D. lungs


Primary phloem develops from

A. lateral meristem
B. protoderm
C. extrastelar cambium
D. provascular tissue


Placenta is the structure formed

A. by the union of foetal and uterine tissue
B. by foetus only
C. by fusion of germ layers
D. None of these