Which is the correct food chain
grass » wolf > deer > buffalo
bacteria » grass » rabbit > wolf
grass » insect » bird » snake
grass > snake »insect » deer
- Increasing accumulation of DDT in organisms of a food chain in higher trophic levels is known as
- The nitrifying bacteria which oxidise nitrite to nitrates include
- The ultimate source of energy for fish is
- In cities like Mumbai and Delhi, the major air pollutants are
- Which of the following is normally not at atmospheric pollutant
- The source of energy in the ecosystem is:
- What will happen if our water resources are continued to be polluted by industrial wastes
- Radiation is a health hazard as it causes
- Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
- Correct definition of ecosystem is :
- Primary treatment of sewage means
- Mark which is true
- When young plants are grazed too heavily they get killed because
- Pedology is the study of
- The biggest herbarium of India is
- Biologists celebrate 5th June as
- The least porous soil among the following is
- Commensalism is
- The first stage of plant succession on earth is called
- An American plant which had become a troublesome weed in India is
- Which is the correct food chain
- Water plants usually have
- Autumn colouration of leaves appears only in
- Desert plants are generally
- Competition for food, light and space is most severe in
- Biosphere is:
- A habitat of long severe winters and growing season limited to a few months of summer constitutes
- Tropical evergreen forests are seen in
- Vegetation in Delhi is predominantly
- Hie sequence blue green algae > crustose lichens » foliose lichens > mosses » shrubs » dicotyledonous…