CONCEPTS
What is an animal kingdom?
The Animalia kingdom is the most evolved and is divided into two large groups: vertebrates and invertebrates.
How many years ago did the first animals appear?
The first animals appeared 540 million years ago
The metabolism of animals allows them to produce their own food?
No, animals cannot make their own food like plants can.
Mammals
- Polar Bear
- Tiger
What kind of beings are animals?
Animals are multicellular and eukaryotic beings with features like: heterotrophic feeding, aerobic respiration, among others.
What were the first animal species?
The first animal species were sea sponges
What is one of the distinctive features of animals?
One of their distinctive features is that they have their own mobility.
Birds
- Ostrich
- Seagulls
How many taxonomic kingdoms are there?
There are five famous taxonomic kingdoms of biological evolution in which the different forms of life that exist, and have existed, on Earth are grouped.
What are vertebrate animals?
Vertebrate animals are those that have a skull and a vertebral column or backbone.
What are the specialized limbs of animals?
Wings, fins, feet and legs, which allow them to move and escape from predators.
Reptiles
- Crocodiles
- Snakes
How many species of animals are there?
There are many species of animals among which we can find: mammals, birds, reptiles, frogs, toads, fish, centipedes, millipedes, spiders, scorpions, insects, crabs, shrimp, stars, sea urchins, snails, clams, octopuses, earthworms, worms, jellyfish, corals, sponges, among others.
What are invertebrate animals?
Invertebrate animals are those that do not have an articulated internal skeleton.
Is animal reproduction sexual or asexual?
Animals reproduce sexually, that is, through copulation of opposite sexes (male and female).
Fish
- Salmon
- Sardine