Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?

Related Mcqs:

1. All the non-cultivated plants and non-comesticated animals are referred to as:

   A. Useless organism
   B. Harmful life
   C. Wild life
   D. Enemies of man

2. In an aquatic environment, microscopic animals and plants are collectively known:

   A. Commensals
   B. Herbivores
   C. Fauna and flora
   D. Planktons

3. Plants and animals living in a particular area consitute:

   A. Flora and fauna
   B. Community
   C. Ecosystem
   D. Ecology

4. Which of the following communities is more vulnerable to invasion by outside animals and plants?

   A. Mangroves
   B. Tropical evergreen forests
   C. Temperate forests
   D. Oceanic island communities

5. The sedimentation in the most vital reservoirs of the country, the nation is losing some US $130.8 million every year due to loss of:

   A. Fertile soil, shrinkage of storage capacity
   B. Reduction agricultural products, power generation and industrial output
   C. Both (a) & (b)
   D. None of these

6. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

7. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

8. Among the plants listed, point out one that does not fit into ecological group represented by the other plants:

   A. Acacia
   B. Aloe
   C. Euphorbia
   D. Rhizophora

9. Among the plants listed, point out one that does not fit into biological group represented by other plants

   A. Euphorbia
   B. Acacia
   C. Vallisneria
   D. Aloe

10. An animal which captures and readily kills live animals for its food is known as:

    A. Predator
    B. Parasite
    C. Symbionts
    D. None of these