826: In Mizoram, the settlement pattern is mostly of "linear type" along the ridges, because
(a) the valleys are cooler than the ridges
(b) accessibility is easier on the ridge tops
(c) the ridges are cooler than the valleys
(d) the valleys are densely forested
827: Which one of the following schedules of the Indian Constitution lists the names of states and specifies their territories?
(a) First
(b) Second
(c) Third
(d) Fourth
828: In which one of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?
(a) Spider
(b) Honeybee
(c) Dragonfly
(d) Pit viper
829: The identity platform `Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply?
1. It can be integrated into any electronic device.
2. Online authentication using iris is possible.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
830: The process of light exposure in a 24-hour cycle that controls the growth and development of certain plants and animals is called:
(a) Photosynthesis
(b) Photoionisation
(c) Photoperiodism
(d) Photoluminescence