Swayam Central

Biology XI Part-II

By Dr. Sunita Farkya   |   DESM, NCERT, New Delhi
The reductionist approach to study of life forms resulted in increasing use of physio-chemical concepts and techniques. Majority of these studies employed either surviving tissue model or straightaway cell free systems. An explosion of knowledge resulted in molecular biology. Molecular physiology became almost synonymous with biochemistry and biophysics. However, it is now being increasingly realised that neither a purely organismic approach nor a purely reductionistic molecular approach would reveal the truth about biological processes or living phenomena. Systems biology makes us believe that all living phenomena are emergent properties due to interaction among components of the system under study. Regulatory network of molecules, supra molecular assemblies, cells, tissues, organisms and indeed, populations and communities, each create emergent properties. This course brings to you the chapters various physiological processes like digestion, exchange of gases, blood circulation, locomotion and movement, coordination and regulation of body events at the organismic level.
The description of structure and variation of living organisms over a period of time, ended up as two, apparently irreconcilable perspectives on biology. The two perspectives essentially rested on two levels of organisation of life forms and phenomena. One described at organismic and above level of organisation while the second described at cellular and molecular level of organisation. The first resulted in ecology and related disciplines. The second resulted in physiology and biochemistry. Description of physiological processes, in flowering plants as an example, is what is given in the chapters in this unit. The processes of mineral nutrition of plants, photosynthesis, transport, respiration and ultimately plant growth and development are described in molecular terms but in the context of cellular activities and even at organism level. Wherever appropriate, the relation of the physiological processes to environment is also discussed.

Learners enrolled: 3022


Course Status : Upcoming
Course Type : Core
Duration : 24 weeks
Start Date : 15 May 2020
End Date : 29 Oct 2020
Exam Date : 15 Oct 2020
Enrollment Ends : 15 Aug 2020
Category :
  • School
  • Level : School




    Week 0

    How to access the course?

    Week 1

    Transport in plants (Short distance transport) – Part 1 (kebo_21101)

    Week 2

    Transport in plants (Long distance transport in xylem): Part – 2 (kebo_21102)
    Transport in plants (Phloem translocation): Part– 3 (kebo_21103)

    Week 3

    Plant Physiology (Mineral Nutrition): Part – 1 (kebo_21201)
    Plant Physiology (Mineral Nutrition): Part – 2 (kebo_21202)

    Week 4

    Early Experiments: Part – 1 (kebo_21301)

    Week 5

    Light Reactions of Photosynthesis: Part – 2 (kebo_21302)

    Week 6

    Respiration in Plants: Part – 1 (kebo_21401)

    Week 7

    Respiration in Plants: Part – 2 (kebo_21402)
    Respiration in Plants: Part – 3 (kebo_21403)

    Week 8

    Plant Growth and Development: Part – 1 (kebo_21501)
    Plant Growth and Development: Part – 2 (kebo_21502)

    Week 9

    Plant Growth and Development: Part – 3 (kebo_21503)

    Week 10

    Human Physiology: Part – 1 (kebo_21601)

    Human Physiology: Part – 2 (kebo_21602)

    Week 11

    Human Physiology: Part – 3 (kebo_21603)

    Week 12

    Digestive System: Part – 1 (kebo_21701)

    Week 13

    Digestive System: Part – 2 (kebo_21702)

    Week 14

    Body Fluids and Circulation: Part – 1 (kebo_21801)
    Body Fluids and Circulation: Part – 2: (kebo_21802)

    Week 15

    Body Fluids and Circulation: Part – 3 (kebo_21803)
    Body Fluids and Circulation: Part – 4 (kebo_21804)

    Week 16

    Excretory Products and Their Elimination: Part – 1 (kebo_21901)

    Week 17

    Excretory Products and their Elimination: Part – 2 (kebo_21902)

    Week 18

    Locomotion and Movement: Part – 1 (kebo_22001)
    Locomotion and Movement: Part – 2 (kebo_22002)

    Week 19

    Locomotion and Movement: Part – 3 (kebo_22003)
    Locomotion and Movement: Part – 4 (kebo_22004)

    Week 20

    Neural Control and Coordination: Part – 1 (kebo_22101)
    Neural Control and Coordination: Part – 2 (kebo_22102)

    Week 21

    Neural Control and Coordination: Part – 3 (kebo_22103)
    Neural Control and Coordination: Part – 3 (kebo_22104)

    Week 22

    Endocrine glands in humans: General Physiology: Part – 1 (kebo_22201)
    Endocrine glands of Reproductive System; Endocrine Cells and Tissues in humans: Part – 2 (kebo_22202)

    Week 23

    Mechanism of Hormone Action: Part – 3 (kebo_22203)
    Feedback and Discussion


    NCERT "Biology" for Class - XI


    Dr. Sunita Farkya

    DESM, NCERT, New Delhi
    Dr. Sunita Farkya is presently working as a Professor in the Department of Education in Science and Mathematics, NIE, NCERT, New Delhi. She has around 28 years of Research/ Teaching experience. She has been CSIR fellow since 1991, Later on she worked as Research Associate and Pool Scientist of CSIR. She has persuaded her Post Doctoral Research in Indian Institute of Technology, Delhi. Professor Farkya has completed several research projects in Biology and science education and published papers in indexed journals. She has coordinated number of books in Science for school students. She is executive editor of Journal of NCERT, School Science.. Her areas of interest are Plant Biotechnology, Production of Secondary metabolites, Applied Microbiology, Biological Control of weeds, science education and Biology education (Content cum pedagogy in teaching for improving learning at all stages of school education). Presently she is working of several research projects and popularisation of science) Her special interests in the experimental Techniques and Skills are Plant tissue culture techniques: Development of cultures, genetic transformation, production of secondary metabolites from plant cell cultures, cultivation in bioreactors; upstream and downstream processing (Chromatography – TLC, HPLC, Column chromatography, Electrophoresis – Gel and Paper electrophoresis,), extraction, isolation and structure elucidation of phytoconstituents. Molecular Biology Techniques: Genomic DNA extraction, Polymerase Chain Reaction (PCR), plasmid isolation, genetic confirmation. Microbial Techniques: Aseptic culture handling, in-vivo efficacy testing. And miscellaneous: enzyme extraction and activity assay, toxicity studies.


    The participant will get participation / completion certificate.


    1. Dr. Yash Paul Sharma: Dr. Yash Paul Sharma has been working in the Central Institute of Educational Technology, NCERT, New Delhi. With Ph.D. degree in Zoology and PostDoc (SRF-Extended) from CSIR, Dr. Sharma has interests in Taxonomy, evolutionary Biology and integrating ICT to teach biological concepts. Dr. Sharma has discovered several new species of ants from high altitude region of Himalaya with co-workers. Dr. Sharma has two books in his credit and published his Research work in International journals of repute with impact factor. A tech enthusiast, working on integrating futuristic technologies like Augmented Reality, Virtual Reality and Artificial learning in education. Dr. Sharma has developed many eResources and won awards like Jury appreciation award for Virtually Reality resources in Education and one of his documentary was selected for National Science Film Festival. He has been actively involved in training programme across the country on eContent development and MOOCs.