A freshwater plant such as water lily can solve the problem of buoyancy by the possession of?
The correct sequence for the perception of smell in mammals is?
I. High birth rate and high immigration rate
II. Low birth rate and high immigration rate
III. Low mortality rate and low emigration rate
IV. High mortality rate and high emigration rate.
Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements?
The number of plant species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomoea spp (5), Sida spp (7) and Imperata spp (23)
What is the percentage of occurrence of Imperata spp?
When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because?
