NCERT Books for Class 9 Science - Diversity in Living Organisms - Free PDF Download
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FAQs on NCERT Books for Class 9 Science Chapter 7
1. How the Animalia kingdom is subdivided in chapter 7 - Diversity in Organisms?
The Animalia kingdom is the biggest kingdom and is further divided into many groups. But majorly it is divided in two sub categories based on the presence of vertebrates or not in the organism. Invertebrata and Vertebrata are these two sub categories. The student can learn more about all these classification from the NCERT book class 9 science chapter 7. To help the student to better understand the topics at hand, We at Vedantu provides the student with a lot of free study materials.
2. Who are reptiles and aves in the Vertebrate category of Animalia Kingdom?
The Vertebrate category of animalia kingdom is divided into 5 classes: reptiles and Aves are one of those categories.
Reptiles: Reptiles are cold-blooded animals with a three chambered heart except the Crocodile. They breathe majorly via their lungs and almost all the reptiles lay eggs. Snakes, Crocodiles and turtle are its primary examples
Aves: All the birds are included in this category, they are warm-blooded in nature. Two of their limbs are converted into wings to support their flight. Their bones are hollow inside and they have features covered all around the body and are very light weight creatures. All so, they can fly in the sky.
3. Explain the difference between Vertebrata and Invertebrata? and also list the subcategories of them as mentioned in chapter 7?
The animal kingdom is divided into two categories which are Invertebrate and Vertebrata.
Invertebrata: This category includes organisms of the Animalia kingdom which lack a vertebral column. Most of these are sea creatures. This category is further divided into many different sub-categories, these subcategories are Porifera, Coelenterata, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, and Echinodermata.
Vertebrata: Vertebrates are the most complex organisms and they have a real vertebral column and well-built endo-skeleton. There are five classes of vertebrates which include Pisces, Amphibia, Reptilia, Aves, and Mammalia. Human beings also belong to this category.