Benthic organisms are affected most by
Benthic organisms are affected most by Options (a) Water-holding capacity of soil (b) Light reaching the forest floor (c) Surface…
7 years ago
Ecology and Ecosystem
The age pyramid with broad base indicates
The age pyramid with broad base indicates Options (a) High percentage of young individuals (b) High percentage of old individuals…
7 years ago
What is true about the isolated small tribal populations?
What is true about the isolated small tribal populations? Options (a) There is a decline in population as boys marry…
7 years ago
Two plants can be conclusively said to belong to the same species if they
Two plants can be conclusively said to belong to the same species if they Options (a) have more than 90…
7 years ago
Which one of the following statements is correct for secondary succession ?
Which one of the following statements is correct for secondary succession ? Options (a) It begins on a bare rock…
7 years ago
The population of an insect species shows an explosive increase in numbers
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at…
7 years ago
In the case of peppered moth (Biston betularia) the black
In the case of peppered moth (Biston betularia) the black - coloured form became dominant over the light- coloured form…
7 years ago
A biologist studied the population of rats in a barn
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality…
7 years ago
The correct sequence of plants in a hydrosere is:
The correct sequence of plants in a hydrosere is: Options (a) Volvox → Hydrilla → Pistia →Scirpus Lantana → Oak…
7 years ago
Pheretima and its close relatives derive nourishment from :
Pheretima and its close relatives derive nourishment from : Options (a) sugarcane roots (b) decaying fallen leaves and soil organic…
7 years ago