Structural organization in animals

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NCERT Solutions For Class 11 Biology Structural organization in animals book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 11 Biology Structural organization in animals and chapter wise NCERT solution for Biology for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.

NCERT solutions for Class 11 Biology Download as PDF

NCERT Solutions For Class 11 Biology Anatomy of Flowering Plants

NCERT Class 11 Biology Chapter wise Solutions


  • 1 : The Living World
  • 2 : Biological Classification
  • 3 : Plant Kingdom
  • 4 : Animal Kingdom


  • 5 : Morphology of Flowering Plants
  • 6 : Anatomy of Flowering Plants
  • 7 : Structural Organisation in Animals


  • 8 : Cell : The Unit of Life
  • 9 : Biomolecules
  • 10 : Cell Cycle and Cell Division


  • 11 : Transport in Plants
  • 12 : Mineral Nutrition
  • 13 : Photosynthesis in Higher Plants
  • 14 : Respiration in Plants
  • 15 : Plant Growth and Development


  • 16 : Digestion and Absorption
  • 17 : Breathing and Exchange of Gases
  • 18 : Body Fluids and Circulation
  • 19 : Excretory Products and their Elimination
  • 20 : Locomotion and Movement
  • 21 : Neural Control and Coordination
  • 22 : Chemical Coordination and Integration

NCERT Solutions For Class 11 Biology Structural organization in animals

Chapter 07 – Class 11 Biology Structural organization in animals
1. Answer in one word or one line.
(i) Give the common name of Periplaneta americana.
(ii) How many spermathecae are found in earthworm?
(iii) What is the position of ovaries in the cockroach?
(iv) How many segments are present in the abdomen of cockroach?
(v) Where do you find malphigian tubules?

2. Answer the following:
(i) What is the function of nephridia?
(ii) How many types of nephridia are found in earthworm based on their location?

3. Draw a labelled diagram of the reproductive organs of an earthworm.

4. Draw a labelled diagram of alimentary canal of a cockroach.

5. Distinguish between the following
(a) Prostomium and peristomium
(b) Septal nephridium and pharyngeal nephridium

6. What are the cellular components of blood?

7. What are the following and where do you find them in animal body
(a) Chondriocytes
(b) Axons
(c) Ciliated epithelium

8. Describe various types of epithelial tissues with the help of labelled diagrams.

9. Distinguish between
(a) Simple epithelium and compound epithelium.
(b) Cardiac muscle and striated muscle
(c) Dense regular and dense irregular connective tissues
(d) Adipose and blood tissue
(e) Simple gland and compound gland

10. Mark the odd one in each series:
(a) Areolar tissue; blood; neuron; tendon
(b) RBC; WBC; platelets; cartilage
(c) Exocrine; endocrine; salivary gland; ligament
(d) Maxilla; mandible; labrum; antennae
(e) Prothorax; mesothorax; metathorax; coxa

11. Match the terms in column I with those in column II:

Column IColumn II
a)Compound epitheliumi.Alimentary canal
b)Compound eyeii.Cockroach
c)Septal nephridiaiii.Skin
d)Open circulatory systemiv.Mosaic vision

12. Mention briefly about the circulatory system of earthworm

Ans. Earthworms (Pheretima) have closed blood vascular systems, which consists of the heart, blood vessels, and capillaries. The heart pumps blood for circulating it in one direction. Blood is supplied by smaller blood cells to the gut nerve cord and the body wall. Blood glands are present in the 4th, 5th, and 6th segments, which produce blood cells and haemoglobin dissolved in blood plasma. Blood cells in earthworms are phagocytic in nature.

Class 11 Biology Structural organization in animals

13. Mention the function of the following
(a) Ureters in frog
(b) Malpighian tubules
(c) Body wall in earthworm

NCERT Solutions for Class 11 Biology Chapter 7 Structural organization in animals

NCERT Solutions Class 11 Biology Structural organization in animals PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 11 Biology includes text book solutions.  NCERT Solutions for CBSE Class 11 Biology have total 22 chapters. 11 Biology NCERT Solutions in PDF for free Download on our website. Ncert Biology class 11 solutions PDF and Biology ncert class 11 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide

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