NCERT Solutions for Class 11 Biology Chapter 4 - Animal Kingdom
Class 11 Biology Chapter 4 NCERT Solutions are essential study materials that will help students to secure good marks in the exam. Expert and proficient science teachers prepared the Animal Kingdom Class 11 NCERT Solutions. The NCERT Solutions comprise precise answers, along with diagrams and explanations. The questions presented in solution books are from latest edition of NCERT textbooks.
Download the NCERT Solutions for Class 11 Biology Chapter 4 Animal Kingdom to get answers to all the questions in the chapter. The solutions are crafted by subject matter experts, accurately solved, and according to the latest CBSE syllabus. The solutions are easily accessible and free to download.
Important Topics Covered in NCERT Solutions for Class 11 Biology Chapter 4
Chapter 4 of NCERT Class 11 Biology is included under Unit 1. To answer all types of questions from this chapter, students must first know the topics they’ll learn in this chapter, which are as follows:
Basis of Classification
Levels of Organisation
Diploblastic and Triploblastic Organisation
Classification of Animals
Phylum – Porifera
Phylum – Coelenterata (Cnidaria)
Phylum – Ctenophora
Phylum – Platyhelminthes
Phylum – Aschelminthes
Phylum – Annelida
Phylum – Arthropoda
Phylum – Mollusca
Phylum – Echinodermata
Phylum – Hemichordata
Phylum – Chordata
Class – Cyclostomata
Class – Chondrichthyes
Class – Osteichthyes
Class – Amphibia
Class – Reptilia
Class – Aves
Class – Mammalia
FAQs on NCERT Solutions for Class 11 Biology Chapter 4 Animal Kingdom - Free PDF Download
1. What is the importance of body coelom and cavity in the classification of animals?
Ans: The coelom is the fluid-filled or body cavity space followed by the mesoderm. Animals possessing coelom are called coelomates. The body cavity in some animals is not filed by mesoderm; instead, it is presented as deranged pouches in between the endoderm and ectoderm. This body cavity is called pseudocoelom, and the animals who are possessing them are known as pseudocoelomates, for example – aschelminthes. Animals whose body cavity is absent are referred to as acoelomates, example – Platyhelminthes. The classification of coelom and body cavity are essential to determine the complexity of an animal at the organ level.
2. Why are the arthropods the largest species among the animal kingdom?
Ans: Arthropods are the most thriving animals and form the largest group of the Animal Kingdom. They have captured land, sea and air and are known as the three fourth of currently identified living and fossil organisms. They rank in distribution from mountain peaks to the deep sea. The thick, non-living chitinous integument develops the exoskeleton which shields the organism from predators, prevents water loss and helps to resist the temperature up to 100°C or more. They can reproduce very fast, and in less time. Cockroaches, an example of arthropods can even endure nuclear radiations. All these factors make arthropods the largest species among animals.