The Indian rhinoceros is a natural inhabitant of which one of the Indian states?

• Uttarakhand

• Uttar Pradesh

• Himachal Pradesh

• Himachal Pradesh

Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?

• Phytoplankton 

• Fish

• Zoonplankton

• Zoonplankton

DDT residues are rapidly passed through food chain causing biomagnification because DDT is 

• liposoluble

• moderately toxic

• non-toxic to aquatic animals

• non-toxic to aquatic animals

134.

Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D.

• A	B	C	D
  Nitrification	Ammonification	Animals	plants

• A	B	C	D
  Dentirificiation	Ammonification	Plants	Animals

• A	B	C	D
  Nitrification	Denitrification	Animals	Plants

• A	B	C	D
  Nitrification	Denitrification	Animals	Plants

Which one of the following is being tried in India as a biofuel substitute for fossil fuels

• Jatropha

• Azadirachta

• Musa

• Musa

Which one of the following is not used for construction of ecological pyramids?

• Dry weight

• Number of individuals

• Rate of energy flow

• Rate of energy flow

Treatment of seed at low temperature under moist conditions to break its dormancy is called

• scarification

• vernalization

• chelation

• chelation

Which ecosystem has the maximum biomass?

• Forest ecosystem

• Grassland ecosystem

• Pond ecosystem

• Pond ecosystem

Presence of plants arranged into well defined vertical layers depending on their height can be seen best in :

• Tropical Savannah

• Tropical Rain Forest

• Grassland

• Grassland

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a	Eutrophication	i	UV-B radiation
b	Sanitary landfill	ii	Deforestation
c	Snow blindness	iii	Nutrient enrichment
d	Jhum cultivation	iv	Waste disposal

• a	b	c	d
  ii	i	iii	iv

• a	b	c	d
  i	iii	iv	ii

• a	b	c	d
  i	ii	iv	iii

• a	b	c	d
  iii	iv	i	ii