Complete answer: Mammals have the highest that is, 177 endangered species among vertebrates which represents 3.8% of all the species.
Which animal group has the most endangered species?
10 of the world’s most endangered animals
- Javan rhinoceros. An older Vietnamese stamp illustrates the Javan rhinoceros (Shutterstock) …
- Vaquita. …
- Mountain gorillas. …
- Tigers. …
- Asian elephants. …
- Orangutans. …
- Leatherback sea turtles. …
- Snow leopards.
9 мар. 2020 г.
Which of these comprises the highest number of endangered species?
Which group of vertebrates comprises the highest number of endangered species. Solution : Endangered species of mammal is about 62, while in reptiles and birds are 6 and 11 respectively. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
Which group of vertebrates have the most number of species?
Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described. Vertebrates include such groups as the following: jawless fishes.
…
Number of extant species.
| Vertebrate groups | Jawed |
|---|---|
| Fish | |
| Class | cartilaginous fish |
| Group totals | 32,900 |
How many mass extinctions were there?
In addition to the five major mass extinctions, there are numerous minor ones as well, and the ongoing mass extinction caused by human activity is sometimes called the sixth extinction. Mass extinctions seem to be a mainly Phanerozoic phenomenon, with extinction rates low before large complex organisms arose.
Which group is face maximum threat of extinction?
(c) Amphibians have the highest percentage presently, 32% of all amphibian species in the world face the threat of extinction. Other than these, 23% of all mammal species and 12% of all bird species also facing the risk.
Which class has the largest number of animals * 1 point fishes reptiles insects mammals?
Answer. The class named Insecta contains the largest animal number.
Which groups are vertebrates?
In order to study them further, vertebrates can be further classified into 5 major groups – Mammals, Reptiles, Fish, Amphibians, and Birds.
Which endangered animal is the source of?
So, the correct answer is ‘Chiru’ Was this answer helpful?
Is snake a vertebrate?
Snakes belong to the vertebrates, along with all other reptiles and amphibians, mammals, birds, and fish. All these animals have an inner skeleton. Bones give structure and strength to bodies.
What are the 5 main animal groups?
Animals can be divided into five distinct groups: mammals, fish, birds, reptiles, and amphibians.
Is a shark a vertebrate?
Sharks are vertebrates just like mammals. But sharks belong to a class of vertebrate which is the Cartilaginous Fish.
What are the big 5 extinctions?
Top Five Extinctions
- Ordovician-silurian Extinction: 440 million years ago. Small marine organisms died out.
- Devonian Extinction: 365 million years ago. …
- Permian-triassic Extinction: 250 million years ago. …
- Triassic-jurassic Extinction: 210 million years ago. …
- Cretaceous-tertiary Extinction: 65 Million Years Ago.
What are the six extinctions?
The Holocene extinction is also known as the “sixth extinction”, as it is possibly the sixth mass extinction event, after the Ordovician–Silurian extinction events, the Late Devonian extinction, the Permian–Triassic extinction event, the Triassic–Jurassic extinction event, and the Cretaceous–Paleogene extinction event.
What was the worst mass extinction?
The largest extinction setback was the Permian-Triassic extinction, also called the “Great Dying,” some 252 million years ago. Up to 96% of all marine species and 70% of terrestrial vertebrate species went extinct.