Advertisements
Advertisements
प्रश्न
What is mycorrhiza?
Advertisements
उत्तर
Mycorhiza is a symbiotic association between a fungus and the roots of higher plants.
संबंधित प्रश्न
Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
Mention any two examples where the organisms involved are commercially exploited in agriculture.
Answer the following question.
Mention the term used to describe a population interaction between an orchid growing on a forest tree.
Name and explain the interaction that is seen between clownfish and sea anemones.
Name the type of association:
Clownfish and sea anemone
Define the following term:
Camouflage
The interaction in nature, where one gets to benefit on the expense of other is _________.
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 |
Which principle/theory states that 'Two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior will be eliminated eventually.'?
Identify the morphological means of defence to avoid herbivores shown by plants.
Which one of the following is an example of predation?
Musk deer is an example of ______
Substantiate by giving two reasons as to why a holistic understanding of the flora and fauna the cropland is required before introducing an appropriate biocontrol method.
Mycorrhizae are the example of ______.
Which one of the following is one of the characteristics of a biological community?
The presence or interference of one species leads to reduction in feeding efficiency of other species is termed as
Define stenohaline species.
What is the interaction between two species called?
What is brood parasitism? Explain with the help of an example.
Give one example for the following type.
Predator animal
Give one example for the following type.
Phytophagous animal
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) |
Sea Anemone gets attached to the surface of the hermit crab. The kind of population interaction exhibited in this case is ______.
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.
Carnivorous animals-lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as ______.
Interaction between clown fish living among the stinging tentacles of sea anemone is an example of ______.
Select the statement which best describes parasitism.
In which interaction of species, both the species are at a loss?
The diagram given below shows the life cycle of a malarial parasite. Study it carefully and answer the questions that follows:
- Name the hosts in which the asexual phase and sexual phase of the life cycle takes place.
- Identify the infective stage labelled ‘D’.
- Name the structure labelled ‘A’ and ‘E’.
- Give any one symptom of malaria.
