Solved

Rotifers Are Microscopic Freshwater Organisms Commonly Called Wheel Animals

question 28

Multiple Choice

Rotifers are microscopic freshwater organisms commonly called wheel animals. This name originated because these animals have a band of cilia at their mouth end that can look like a rotating wheel. These cilia are used in locomotion, but also create a current that draws water and particulates into the organism's mouth as it feeds. Reproduction and the life cycle of these organisms can be interesting. Some species consist entirely of females. In other species, males and females can be found, but males are only found rarely and often during times of adverse environmental conditions, such as extreme heat or drying of the pond. Males do not usually possess a functional digestive system and are short-lived. They have a single testis and are often already sexually fertile at birth. Mating occurs when the male either inserts his penis into the cloaca of the female or injects sperm directly into her body cavity. Embryos develop within the female, and most species hatch as miniature versions of the adult. Rotifers would be considered __________ feeders.

Definitions:

Earth's Biodiversity

refers to the variety and variability of life on Earth, encompassing the different species of plants, animals, fungi, and microorganisms, their genes, and the ecosystems they form.

Human Pollutants

Substances or products generated by human activities that contaminate the environment, posing risks to ecological and human health.

Environmental Wisdom

The understanding and application of ecological knowledge and principles to make decisions that consider the long-term impact on natural environments.

Natural Principles

Fundamental concepts or laws governing the natural world, which explain patterns observed in the physical universe.