21. The study of rearing fine and intelligent human beings through genetics is called ........................
a) Eugenics
b) Biotechnology
c) Cloning
d) Geneology

22. Branch of mathematics dealing with measurement of surface of earth is called .....................
a) Geology
b) Topology
c) Geo mathematics
d) Geodesy

23. Use of Sun bath for the treatment of diseases is called .......................
a) Sun therapy
b) Solar therapy
c) Heliotherapy
d) Radiation therapy

24. Scientific cultivation of fruits, vegetables, flowers and shrubs is called ....................
a) Agronomy
b) Botany
c) Horticulture
d) Entomology

25. Scientific study of birds is called .............................
a) Ornithology
b) Avian biology
c) Poultry science
d) Zoology