Advertisements
Advertisements
प्रश्न
Give one example of Camouflage.
Advertisements
उत्तर
The praying mantis (Mantis religiosa) is green and resembles a thin stem, helping it blend with the surroundings and remain unnoticed by prey.
APPEARS IN
संबंधित प्रश्न
Which day is observed as ‘World Environment Day’?
Why do clown fish and sea anemone pair up? What is this relationship called?
Name important defence mechanisms in plants against herbivory.
Define the following term:
Interspecific competition
How is mutualism different from commensalism?
Select the statement which explains the best parasitism.
What is the ecological process behind the biological control method of managing pest insects?
Give one example of mutualism.
The cattle egret and grazing cattle in close association is a classic example of ______.
In Logistic growth curve lag phase shows______.
What is ESS?
Define the term population interactions. State its two types.
What is population interaction? Explain the interactions in Mutualism and Competition.
Tabulate and analysis of two species population interaction.
Identify the interspecific interaction in which species A is harmed and species B is unaffected.
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
Identify the morphological means of defence to avoid herbivores shown by plants.
Identify the interspecific interaction depicted in the following figure.
______ interaction is the biological interaction between organisms of same population.
Amensalism can be represented as ______
Amensalism is an association between two species where ______.
Define stenohaline species.
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 | ______ |
Write the observations made at the end of Connell's field, experiment on barnacles on the rocky sea coasts of Scotland.
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 ______.
Complete the following chart regarding population interaction and re-write:
| Sr. No. | Name of interaction | Interaction between |
| 1. | ? | Plasmodium and Man |
| 2. | ? | Leopard and Lion |
| 3. | ? | Clownfish and Sea-anemone |
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.
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.
What happens to an inferior competitor if a superior competitor is present in the same environment?
