Match the following column I and column II.
| Column I | Column II |
| A. Bamboo | I. (B + I) |
| B. Oysters, pelagic fishes | II. Breed only once in their lifetime. |
| C. Population density will increase | III. Produce a large number of small-sized offspring. |
| D. Population density will decrease | IV. (D + E) |
Answer & explanation
Correct answer: option 2
The correct answer is option (2) - A- II , B- III , C-I, D-IV.
Population density will increase if the number of births plus the number of immigrants (B + I) is more.
Population density will deccrease if the number of deaths plus the number of emigrants (D + E) is more.
Some organisms breed only once in their lifetime (Pacific salmon fish, bamboo) while others breed many times during their lifetime (most birds and mammals).
Some produce a large number of small-sized offspring (Oysters, pelagic fishes) while others produce a small number of large-sized offspring (birds, mammals)