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प्रश्न
Give the role of VAM related to soil fertility.
उत्तर
The association of VAM (Vesicular Arbuscular Mycorrhizae) with crop plants helps in converting a less productive field into a more productive one.
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संबंधित प्रश्न
State Gause’s Competitive Exclusion Principle.
The number of deaths under ideal conditions is known as ______.
Match the following and choose the correct combination from the options given below.
| Column I | Column II |
| Mutualism | Lion and deer |
| Commensalism | Round worm and man |
| Parasitism | Birds compete with squirrels for nuts |
| Competition | Sea anemone on hermit crab |
| Predation | Barnacles attached to Whales |
Statement I: If one or two species are lost, it may not affect proper functioning of ecosystem.
Statement II: Loss of key species causes serious threat to functioning of ecosystem. Choose the correct alternative with reference to the above statements
Which of the following is NOT an example of mutualism?
Which one of the following is NOT an example of commensalism?
Observe the set of 4 figures A, B, C and D and, answer the following questions
- Which one of the figures shows mutualism?
- What kind of association is shown in D?
- Name the organisms and the association in C.
- What role is the insect performing in B?
 Fig. (A) |
 Fig. (B) |
 Fig. (C) |
 Fig. (D) |
"Cattle and goats do not browse the Calotropis plant." Justify the statement giving reasons.
What are the special adaptations that endoparasites show?
What happens to an inferior competitor if the superior competitor is removed from the environment?
