Farmers have reported over 50% higher yields of rice by using which of the following biofertilizer?
Mycorrhiza
Azolla pinnata
Cyanobacteria
Legume-Rhizobium symbiosis
Human population growth in India
Tends to follow a sigmoid curve as in case of many other animal species
Tends to reach zero population growth as in case of some animal species
Can be reduced by permitting natural calamities and enforcing birth control measures
Can be regulated by following the National programme of family planning
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in non-directional manner?
Selection
Migration
Mutation
Random drift
What is agent orange?
A biodegradable insecticide
A weedicide containing dioxin
Colour used in fluorescent lamp
A hazardous chemical used in luminous paints
During anaerobic digestion of organic waste, such as in producing bio gas, which one of the following is left undegraded?
Hemicellulose
Cellulose
Lipids
Lignin
Which one of the following is the correct statement regarding the particular psychotropic drug specified?
Hashish causes alter thought perceptions and hallucinations
Opium stimulates nervous system and causes hallucinations
Morphine leads to delusions and disturbed emotions
Barbiturates cause relaxation and temporary Euphoria
A country with a high rate of population growth took measures to reduce it. The figure below shows age sex pyramids of populations. A and B twenty years apart. Select the correct interpretation about them.
‘A’ is more recent and shows slight reduction in the growth rate
‘B’ is earlier pyramid and shows stabilized growth rate
‘B’ is more recent showing that population is very young
‘A’ is the earlier pyramid and no change has occurred in the growth rate
Which one among the following chemicals is used for causing defoliation of forest trees?
Amo-1618
Phosphon-D (1998)
Malic hydrazide
2,4-D
Amniocentesis is a process to
Determine any disease in heart
Determine any heredity disease in the embryo
Know about the disease of brain
All the above
What is the most important factor for the success of animal population?
Natality
Unlimited food
Adaptability
Inter-species activity
