What are the 4 stages in the life cycle of all living things?
Birth, growth, reproduction and death represent the four stages of the life cycle of all animals. Although these stages are common to all animals, they vary significantly among species. For instance, while insects, birds and reptiles are born from an egg, mammals develop as embryos inside the mothers’ bodies.
What are the stages of a reptile life cycle?
All reptiles are coldblooded, which means they are ectotherms — they rely on the environment to generate body heat. They have similar life cycles that begin as eggs and progress to hatchlings and then to juveniles before they arrive at the adult stage of life.
How are mammals and birds life cycles different?
Birds often raise their young until the young can fly and find food for themselves. Mammals do not hatch from eggs. Young mammals are born live. They look much like their parents from the start.
What are the similarities between birds and mammals?
Similarities Between Birds and Mammals
- Vertebrates: both birds and mammals are vertebrates, which means that they have backbones.
- Endothermic (warm-blooded): both birds and mammals are endothermic (warm-blooded).
- Four-chambered hearts: the hearts of both birds and mammals have four-chambers.
What is the life cycle of mammals?
The four stages of the life cycle of an animal are birth, growth, reproduction and death.
What is a mammals life cycle?
The four stages of the life cycle of an animal are birth, growth, reproduction and death. Mammals are oviparous because their embryos develop inside the mothers’ wombs, while other types of animals are viviparous because their embryos develop in external eggs.
How many stages are in the life cycle of a lizard?
Life cycle of lizard is divided into three stages, they are given below: 1. Lying and Hatching of Eggs: The life cycle begins with the lizard hatching from an egg, as some species give birth to young ones but in case of lizards they have to undergo a metamorphosis process for further development.
How mammals share features with reptiles?
Among the characteristics they share are bilateral symmetry, a sophisticated nervous system, well-developed sense organs, a respiratory system that involves the pharynx or throat, a complex internal skeleton, and reproductive and excretory systems that overlap.