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CBSE Video lectures for download

     

=Chapter 1 The Living World

=Chapter 2 Biological Classification

=Chapter 3 Plant Kingdom

=Chapter 4 Animal Kingdom

=Chapter 5 Morphology of Flowering Plants

=Chapter 6 Anatomy of Flowering Plants

=Chapter 7 Structural Organisation in Animals

=Chapter 8 Cell The Unit of Life

=Chapter 9 Biomolecules

=Chapter 10 Cell Cycle and Cell Division

=Chapter 11 Transport in Plants

=Chapter 12 Mineral Nutrition

=Chapter 13 Photosynthesis in Higher Plants

=Chapter 14 Respiration in Plants

=Chapter 15 Plant Growth and Development

=Chapter 16 Digestion and Absorption

=Chapter 17 Breathing and Exchange of Gases

=Chapter 18 Body Fluids and Circulation

=Chapter 19 Excretory Products and their Elimination

=Chapter 20 Locomotion and Movement

=Chapter 21 Neural Control and Coordination

=Chapter 22 Chemical Coordination and Integration

 

Chapter 2 Biological Classification

Download NCERT Solutions for Class 11 Biology

Chapter 2 Biological Classification

(Link of Pdf File is given below at the end of the Questions list)

In this pdf file you can see answers of following Questions

 

Question 1:
Discuss how classification systems have undergone several changes over a period of time?
Question 2:
State two economically important uses of:
(a) Heterotrophic bacteria
(b) Archaebacteria

Question 3:
What is the nature of cell-walls in diatoms?
Question 4:
Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify.
Question 5:
How are viroids different from viruses?
Question 6:
Describe briefly the four major groups of Protozoa.

Question 7:
Plants are autotrophic. Can you think of some plants that are partially heterotrophic?
Question 8:
What do the terms phycobiont and mycobiont signify?
Question 9:
Give a comparative account of the classes of Kingdom Fungi under the following:
(i) Mode of nutrition
(ii) Mode of reproduction
Question 10:
What are the characteristic features of Euglenoids?
Question 11:
Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
Question 12:
Organise a discussion in your class on the topic- Are viruses living or non-living?
Question 1:
Name the parts of an angiosperm flower in which development of male and femalegametophyte take place.
Question 2:
Differentiate between microsporogenesis and megasporogenesis. Which type of celldivision occurs during these events? Name the structures formed at the end of thesetwo events.

Question 3:
Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male
gametes

Question 4:
With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
Question 5:
What is meant by monosporic development of female gametophyte?


 



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