Advertisements
Advertisements
प्रश्न
Give one example for the following type.
Chemical defense agent
Advertisements
उत्तर
Chemical defense agent - Cardiac glycosides produced by calotropis
APPEARS IN
संबंधित प्रश्न
An orchid plant is growing on the branch of a mango tree. How do you describe this interaction between the orchid and the mango tree?
Select the statement which explains best parasitism.
Define mutualism.
Predation and parasitism are which type of interactions?
Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.
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.'?
______ is the adaptation of an organism i which it matches its colour with its surroundings to get protected from predators.
Which population interaction can be represented by'+''-'?
Which of the following is NOT an example of mutualism?
Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.
______ in birds is an interesting example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them.
An interaction favourable to both population but no obligatory to either is ______.
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) |
Discuss the various types of positive interactions between species.
While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.
The interaction between cattle egret and the buffalo is ______.
A bird laying its egg in the nest of another bird is the type of ______.
Observe the graph given below.
|
The graph represents inter-specific interaction between two species of Paramecia competing for the same resource in a culture medium. Paramecium caudatum and Paramecium aurelia were grown in separate cultures as well as in mixed cultures. It was found that each species grew in numbers according to the logistic equation.
|
a) Which species is competitively superior? Support it with the data provided in the graph.
b) State the underlying principle for the above result and name the scientist associated with this principle.
c) Explain the mechanism in which two or more species competing with each other can co-exist.
OR
Graphs A and B shown below depict interaction of two species. Which graph indicates Mutualism? Give reason.
 |
 |
| A | B |
What happens to an inferior competitor if a superior competitor is present in the same environment?
