Plant associations refer:

Related Mcqs:

1. Sonic booms’ refer to:

   A. Shock waves
   B. Noise of traffic
   C. Noise of siren
   D. Unhearable sound

2. The first link in any food chain is a green plant because:

   A. They are widely distributed
   B. They are firmly fixed to soil
   C. They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight
   D. There are more herbivorous animals than the carnivorous

3. A plant, being eaten by a herbivore which in turn is eaten by a carnivore, makes a:

   A. Food chain
   B. Web of food
   C. Biomass
   D. Interdependence

4. According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:

   A. 150
   B. 1,500
   C. 300
   D. 3,000

5. Peacock eats a snake and snake eats frog and frog eats insect while insect eats green plant, then position of peacock is:

   A. Primary producer
   B. Secondary Producer
   C. Decomposer
   D. Apex of food pyramids

6. If bamboo plant is growing in a far forest then what will be its trophic level?

   A. First
   B. Second
   C. Third
   D. Fourth

7. Causes of plant succession are:

   A. Environmental changes produced as a result of reaction to the community become favorable for new species of plants
   B. Physiographic factors produce change in the habitat like flooding of plains, soil erosion, change in temperature, rain etc.
   C. Both (a) & (b)
   D. None of these

8. Plant succession means:

   A. A change in the composition and nature of plant community of particular habitat over the years
   B. Any habitat can be studied systematically provided the area is free from any external disturbance
   C. Both (a) & (b)
   D. None of these

9. Classification of plant succession categorised as:

   A. Primary succession
   B. Secondary succession
   C. Both (a) & (b)
   D. None of these

10. The chemical produced by the host plant to protect themselves against fungal infection is:

    A. Toxin
    B. Hormone
    C. Phytotoxin
    D. Phytoalexin