VERTEBRATES & INVERTEBRATES GK Questions and Answers :-
1.What is Vertebrates?
Vertebrates belong to the subphylus Chordata. Their name is derived from the Latin word “Vertebra”. A vertibrate may be defined as a special kind of chordate animal that has a cartilaginous or bony endoskeleton consisting of a cranium housing a brain and a vertebral column through which the spinal cord passes.
2. Which are the diagnostic characereistics of a vertebrate?
The notochord pharangeal gill-slits and dorsal hollow nerve cord.
3. The muscles are attached to the endoskeleton to
To providemotion and locomotion
4. Which system in vertebrates regulates body process, growth and reproduction?
The endocrine system.
5. How many species of animals exhibit vertebral columns?
6. Who gave the idea of fresh water origin of vertebrates?
The American geologist Chamberlin in 1900
7. Which vertebrate is the most primitive and lowest?
They belong to the group Agnatha without jaws.
8. Which are the first jawed extinct vertebrate?
Aconthodians, the shark like fishes.
9. which are jaw-bearing aquatic vertebrates?
Fishes. They are characterised by gills for respiration and paired fins for swimming
10. Which group of vertebrate has single circulation of blood?
11. Flying fish are fish, but flyin foxes are not foxes. What kind of feature are they?
12. Where are the voluntary movements in vertebrates co-ordinated?
13. What are invertebrates?
Animals which do not have backbone are called invertebrates
14. What is hybernation?
It is a semi-comatose condition in which some members of most animal groups spend the winter in cold and temperate climates. It is also called winter sleep.
15. What is euglena?
It is a microscopic fresh water invertebrate having one flagellum and a red eyspot or stigma especially noted for its green chromatophores.