18978.Which factor of ecosystem includes plants, animals and microorganisms?
Biotic factors
Direct factors
Indirect factors
Abiotic factors
18979.Consequences of population explosion were explained for the first time by
De Vries
Malthus
Darwin
Lamarck
18981.Demographic features of developing countries are
High infant mortality, low fertility, young age distribution and uneven population growth
High fertility, high density, high mortality rate and young age distribution
High fertility, falling mortality rate, rapid population growth and young age distribution
High density, high mortality, uneven population growth and very old age distribution
18982.Population approaching carrying capacity will show
Zero population growth
Mortality > Natality
Mortality < Natality
None of the above
18983.Density of a population 4. is
D = S(size) / W(weight)
D = S(space) / N(number)
D = N(number) / S(space)
None of the above
18985.Excessive consumption of alcohol leads to
Damaged muscles
Increased alertness
Liver cirrhosis
Damage to brain
18986.From which of the following parts of the plant is opium obtained?
New leaves
Roots
Seeds
Unripe capsule
18988.In a population, rate of addition of new members is higher than the rate of individuals lost. It shows
Zero population growth
Declined growth
Exponential growth
None of the above
18989.In drunk person, the part of brain to be affected first is
Cerebellum
Pons varolli
Medulla oblongata
Cerebrum
18991.In India, human population has higher number of younger age group because of
Long life span and low birth rate
Short life span and high birth rate
Short life span and low birth rate
Birth rate is equal to death rate
18992.Increase in population does not necessarily increase
Unemployment
Resource generation
Health facilities
Per capita income
18993.Intravenous drug users (IDU) are at high risk of catching
Pneumonia
AIDS
Viral hepatitis
Both B and C
18994.LSD, Morphine and Bhang are respectively obtained from
Claviceps, Papaver and Cannabis
Claviceps, Cannabis and Rauwolfia
Cannabis, Claviceps and Fusarium
Claviceps, Rauwolfia and Papaver