Biology Past Questions and Answers

The sequence of the one-way gaseous exchange mechanism in a fish is

The type of asexual reproduction that is common to both Paramecium and protists is

In nature, plants and animals are perpetually engaged in mutualism because

In an experiment to determine the percentage of humus and water in a soil sample, the following results were obtained
Weight of the evaporating basin alone = 80.5g
Weight of basin and soil = 101.5g
Weight after drying the soil in the oven = 99.0g
Weight of basin and roasted soil = 95.5g
The percentage of humus in the soil sample is

An example of a filter -feeding animal is