The major difference between these three groups is that carnivores eat meat, herbivores eat plants, and omnivores eat a little of both. Each has a different kind of teeth and digestive system that helps it eat and digest its food.Know More
Carnivores have only one stomach and sharp, strong teeth made for tearing into meat to get if off the bone. They spend little time chewing their food, because their saliva lacks digestive enzymes to help them break down the food. The animal sends it directly down to the esophagus where the digestive process begins. The food enters the stomach where it is digested and the nutrients extracted.
Herbivores only eat plant matter. They spend a lot of time chewing their food with flat teeth made for grinding tough plants. The food reaches their stomachs where it is fermented to make for easier digestion. During the fermentation process, a special microflora is excreted which helps to break down tough plant matter, making the nutrient extraction process easier.
Omnivores eat both animals and plants. Humans are a prime example of omnivores. The digestive system of an omnivore is more like that of a carnivore but they can more easily digest plant matter than most herbivores.Learn more about Zoology
A major difference between male and female mammalian gametogenesis is that each instance produces four sperm cells in males, while one ovum and three polar bodies that die develop in females, explains University of Dayton. Male gametogenesis continues throughout the mammal's life, while female gametogenesis ends with menopause.Full Answer >
Octopuses are carnivores that feed on crabs, clams, squid and fish by catching their prey and then returning to their dens to consume it. A variety of methods are used to extract the edible portion of their prey from a shell, such as pulling it apart with their appendages, using the beaks at the center of their arms to crush it or drilling into the shell and injecting a paralyzing venom into a still-living meal. After an octopus consumes its prey, it will leave the skeletal remains, called "middens," outside its den.Full Answer >
Polar bears are carnivores that mostly eat seals, particularly ringed seals but also bearded seals, harp seals and hooded seals. Polar bears eat only the calorie-rich blubber of their prey, abandoning the rest of the animal. They will also eat walruses, seabirds, small mammals, fish and small amounts of vegetation, and will consume any suitable carrion they come across.Full Answer >
Dragonflies are carnivores that feed mainly on mosquitoes, flies and bees. Dragonflies live close to water and are prevalent in wetland habitats.Full Answer >