If there are 250 snails in a pond, and within a year their number increases to 2500 by reproduction. What should be their birth rate per snail per year ?
Given below are two statements:
Statement I : Gause’s ‘Competitive Exclusion Principle’ states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually.
Statement II : In general, carnivores are more adversely affected by competition than herbivores.
In the light of the above statements, choose the correct answer from the options given below:
Match List I with List II.
List I (Interacting species) |
List II (Name of interaction) |
||
---|---|---|---|
(A) | A Leopard and a Lion in a forest/grassland | (I) | Competition |
(B) | A Cuckoo laying egg in a Crow's nest | (II) | Brood parasitism |
(C) | Fungi and root of a higher plant in Mycorrhizae | (III) | Mutualism |
(D) | A cattle egret and a Cattle in a field | (IV) | Commensalism |
Choose the correct answer from the options given below.
Match List I with List II.
List I | List II | ||
---|---|---|---|
(A) | Logistic growth | (I) | Unlimited resource availability condition |
(B) | Exponential growth | (II) | Limited resource availability condition |
(C) | Expanding age pyramid | (III) | The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups |
(D) | Stable age pyramid | (IV) | The percent individuals of pre-reproductive and reproductive age group are same |
Choose the correct answer from the options given below: