Animal kingdom class 11. Animal Kingdom Class 11 Notes and Questions Download Pdf 2022-12-07

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The animal kingdom is a diverse and fascinating group of living organisms that includes everything from small, simple microbes to large, complex mammals. It is classified into several different categories based on various characteristics, such as body structure, mode of nutrition, and mode of reproduction.

One of the most well-known categories in the animal kingdom is the vertebrates, which are animals that have a backbone or spinal column. This group includes mammals, birds, reptiles, amphibians, and fish. Mammals are warm-blooded animals that give birth to live young and feed them milk from their mammary glands. They also have a highly developed brain and are capable of complex behaviors and emotions. Birds are characterized by their ability to fly and their feathers. They are also known for their ability to communicate through songs and calls. Reptiles are cold-blooded animals that are adapted to living on land or in water. They have scaly skin and most of them lay eggs. Amphibians are animals that are adapted to living both in water and on land. They typically have moist, smooth skin and can breathe through their skin as well as their lungs. Fish are adapted to living in water and have gills for breathing.

Another important category in the animal kingdom is the invertebrates, which are animals that do not have a backbone. This group includes insects, worms, mollusks, and arachnids, among others. Insects are small, often colorful animals that have a hard exoskeleton and three pairs of legs. They play important roles in various ecosystems as pollinators, decomposers, and prey. Worms are long, slender animals that live in soil or water. They play important roles in the ecosystem by helping to break down organic matter and enriching the soil. Mollusks are soft-bodied animals that can have shells, such as snails and clams. Arachnids are animals that have two main body segments and four pairs of legs, such as spiders and scorpions.

The animal kingdom is a vital part of the natural world and plays important roles in various ecosystems. It is a diverse and fascinating group of living organisms that continues to amaze and inspire us with its beauty and complexity.

Animal Kingdom Class 11 Notes and Questions Download Pdf

animal kingdom class 11

Solution: Some animals that are found parasitic in humans are as follows: i. Bones are spongy or pneumatic. Segmentation in the body is first observed in which of the following? The questions presented in solution books are from latest edition of NCERT textbooks. They have conquered land, sea and air and make up over three fourth of currently known living and fossil organisms. Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? The neural system is made up of paired ganglia sing.

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Welcome to the Living World: Animal Kingdom

animal kingdom class 11

Jaw modified to beak without teeth. Generally, animals show two types of symmetry- Radial symmetry: A symmetry where any plane passing through the central axis divides the body into two equal halves is called the radial symmetry. Examples of phylum Echinodermata include- Sea urchins, starfish. NCERT Notes for Standard 11 Biology Chapter 4-Sub Topic 3. How useful is the study of the nature of body cavity and coelom in the classification of animals? Animals belonging to the Phylum Porifera to Phylum Echinoderms are non-chordates. Chapter 4 Biology Class 11 NCERT Solutions will help you to learn about the classifications of animals based on various features such as the distinct patterns of digestive, circulatory, or reproductive systems, different arrangements of cells, and body symmetry.

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NCERT Solutions Class 11 Biology Chapter 4 Animal Kingdom

animal kingdom class 11

The canals are lined by choanocytes. They range in distribution from deep sea to mountain peaks. In coelenterates which exist in both forms polyp and medusa , the asexual polyp generation alternates with sexual medusa generation. Agnatha Jawless : Includes 1 class: Cyclostomata 4. Ectoderm give rise to epidermis and nervous system etc.

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Basis of Classification of Animal Kingdom

animal kingdom class 11

Respiration and Excretion Exchange of gases and excretion occurs directly as all the cells are in direct contact with water. Symmetry These are generally bilaterally symmetrical and some are asymmetrical due to torsion or twisting during growth. Respiration by gills, lungs or skin. Phylum Arthropoda Arthropod means jointed legs. They have equivalent left and right lateral sides. The notochord is a flexible rod made up of a material similar to cartilage. We are sure this article has helped you find the perfect notes for your preparation.

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NCERT Chapter 4: Animal Kingdom Class 11 Notes

animal kingdom class 11

They are bilaterally symmetrical, triploblastic and have organ level of organisation. Sex Animals generally have sex organs to produce sexual reproduction. The basis of classification can vary according to the purpose of the classification. Cyclostomes have a sucking mouth and no jaws. NCERT Notes for Standard 11 Biology Chapter 4-Sub Topic 3. Skeleton Molluscsgenerally have shell as exoskeleton. They are acoelomates and have the property of bioluminescence.

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Animal Kingdom Class 11 Chapter 4 Notes CBSE

animal kingdom class 11

Eg: Dentalium Class V: Pelecypoda- shell with 2 pieces. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. Some lives in fresh water. Air sacs are connected to lungs to supplement respiration. Medusa: free floating with a soft, transparent bell like body with tentacles at the margin. Development occurs in an indirect manner. Echinodermata Animals belonging to this category are called Echinodermata because of their endoskeleton of calcareous ossicles.

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Animal Kingdom Class 11 Notes Biology Chapter 4

animal kingdom class 11

They are triploblastic with organ system level of organisation. Symmetry and Body Organisation Arthropods are bilaterally symmetrical. Besides, an undifferentiated layer known as mesoglea is present. NCERT Notes for Standard 11 Biology Chapter 4-Sub Topic 3. Radial symmetry arises when any plane passing through the body's central axis divides it into two identical halves.


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Animal Kingdom

animal kingdom class 11

Sound receptors are present in chirping crickets and cicadas. Therefore, in order to sustain the progeny, there is a requirement for more eggs. The best app for CBSE students now provides Animal Kingdom class 11 Notes Biology latest chapter wise notes for quick preparation of CBSE exams and school based annual examinations. Moist skin without scales. Various steps considered to classify a specimen are: i Mode of nutrition — It can be autotrophic, holozoic, saprophytic or parasitic. Unsegmented and covered with calcareous shell. No matter if you are studying for any competitive exams or your school exams, these notes are all you need to reach the top.


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Animal Kingdom Class 11th Notes

animal kingdom class 11

How important is the presence of air bladder in Pisces? Based on the nature and presence of the body cavity the animals can be classified into: 1. Animals have three types of body plans. Jaw contains teeth, which are modified placoid scales. The body is unsegmented and covered by a calcareous shell, with a distinct head, muscular foot, and visceral hump. In aquatic forms, respiration occurs through feather-like gills or ctenidia.

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