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प्रश्न
What is mycorrhiza?
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उत्तर
Mycorhiza is a symbiotic association between a fungus and the roots of higher plants.
संबंधित प्रश्न
Explain mutualism with the help of any two examples.
Define the following term:
Commensalism
Mention any two examples where the organisms involved are commercially exploited in agriculture.
Competition and Mutualism.
Select the statement which explains the best parasitism.
Name the type of association: Hummingbirds and host flowering plants
What is Mortality? What are its two types?
Define the term population interactions. State its two types.
What is Commensalism? Explain it with a suitable example.
Define population growth. Explain different types of age pyramids.
Competition between species leads to ________.
______ is the adaptation of an organism i which it matches its colour with its surroundings to get protected from predators.
Identify the morphological means of defence to avoid herbivores shown by plants.
______ interaction is the biological interaction between organisms of same population.
A protozoan living in the digestive tract of a flea that lives on a dog 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.
Which of the following is not an example of commensalism?
There are two optional ways of exploitation one way is parasitism. Which is the other one ______.
In spite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
Define stenohaline species.
What is homeostasis?
What are the organisms that feed on plant sap and other plant parts called?
In a pond, we see plants which are free-floating; rooted–submerged; rooted emergent; rooted with floating leaves; Write the type of plant against the following examples.
| Plant Name | Type | |
| a. | Hydrilla | ______ |
| b. | Typha | ______ |
| c. | Nymphaea | ______ |
| d. | Lemna | ______ |
| e. | Vallisneria | ______ |
Match the Column I with Column II.
| Column I | Column II |
| A. Lichen | (i) Commensalism |
| B. Shark and Pilot fish | (ii) Mutualism |
| C. Barnacles on the back of a whale | (iii) Symbiotic obligatory relationship |
| D. Sharks and dolphins | (iv) Competition |
Many copepods live on the body surface of marine fish. This relationship is an example of ______.
"Some species of insects and frogs have evolved with various specific features that help them from being detected."
- Justify the statement giving reasons.
- Mention any two such features.
Select the statement which best describes parasitism.
Give one example of Camouflage.
