Open Text book material Theme II

OTBA Theme II

Open text book material Theme I

OTBA Theme-I

Topics discussed last week

Chapter: Neural control and coordination- Parts of nervous system, Structure of neuron, chemical and electrical synapses, parts of brain, generation and transmission of electrical impulses, structure and function of eye and ear, reflex action.

Topics discussed last week

Chapter : Locomotion and Movement
Types of movement, Types of muscles, Structure of skeletal muscle, sarcomere,structure of thin and thick flaments, Sliding filament theory of muscle contraction, Axial and appendicular skeleton, Types of joints.
Practical: Study of Human skeleton and joints

Topics discussed this week

Chapter : Plant growth and development-  Arithmetic growth, Logistic growth, Sigmoid Curve, Phytohormones- Auxin. Gibberelin, Cytokinin,Ethephon, Absicisic Acid( their functions, vernalisation, Photoperiodism
Practical: Study of skeleton in humans

Topics discussed in class

Chapter: Photosynthesis in Plants- Light reaction: Cyclic photophosphorylation , Noncyclic photophosphorylation, Photolysis of water, Photosystem I Photosystem II, Dark reactions: Calvin cycle, Hatch slack pathway, photorespiration, law of limiting factors.
Practical: Study of imbibtion in raisins

Homework for diwali break

• Attempt NCERT questions of  Mineral Nutrition in plants and  Photosynthesis in Plants.
• Prepare practical project report . 
• Prepare the topic nitrogen fixation and photosynthesis in plants for test after diwali break.

Happy Diwali!.....

Topics discussed in class.

Chapter: Transportation in Plants: Diffusion, Facilitated diffusion, Active transport, Water potential, solute potential, Osmotic potential, Osmotic Pressure, Translocation - transport in xylem and phloem,
Root pressure and transpirational pull , Mass flow hypothesis- source-sink relationship.

Guttation as observed in grass.

Guttation - water droplets oozing out of grassblade tip

Homework for autumn break

1. Do NCERT questions of "Cell cycle" and "Transportation in Plants" in copy.
2. Prepare a project report and complete your practical file.
3. Try to observe Guttation in grasses.

Happy holidays..   Enjoy the festive time and also study for upcoming Unit test... 

Cell cycle- mitosis animation

Cell cycle animation
Cell cycle is repeated sequence of events shown by a cell as it grows and divides periodically.
It involves Interphase (growth phase- G1, S , G2) , Karyokinesis (nuclear division)  and Cytokinesis. 
Karyokinesis is of two types: Mitosis and Meiosis
Mitosis - normal cell division process shown by somatic cells.
Meiosis- cell division process shown by sex cells, gameteocytes.

Cell cycle shown in the video explains cell cycle with mitotic division.

Biology Practical Test on 26-9-2015, Saturday.

Class XI Biology practical test will be conducted on 26/9/2015, Saturday.

Practical outline:
1.Slide preparation- monocot/ dicot                        4 marks 
2.Test for presence of starch/ sugar/ fats/ protein           5 marks
3.Study of parts of flower arrangement on sheet.               5 marks
4.Spots-seven spots( speciemen of plants / animals/ types of inflorescence/ stem/ root / leaf
                                  modifications/ slides of animal/ plant tissues )      7 marks    
- Identification
 - 4/5 characteristic features .
  ( for each spot you will get 2 minutes + at end additional 5 minutes for completing work)
5. Practiacal file.                                              4 marks
6. Viva                                                              5 marks

Topics discussed in the week(22/8/15-28/8/15

Chapter 9: Biomolecules
Enzymes-their action, factors affecting enzymatic action, Types of enzymes and types of cofactors.

Chapter 7: Animal tissues
Types of Animal tissues- Epithelial tissues, nervous tissue, connective tissue, muscular tissue.

Practical: To study the slides of Sclerenchyma, striated, smooth and cardiac muscle, Blood smear, Squamous epithelium.

Topics discussed in class ( 10/8/15-21/8/15)

Chapter 8: Cell: The unit of Life
Cell Theory, Prokaryotic cells- Mesosomes, inclusion body, cell envelope, Eukaryotic cell- Cell membrane, cell wall, endomembrane system, Mitochondria, Plastids, Riosomes, Cilia, Flagella, Centrosome, Nucleus, Types of chromosomes.

Chapter 9: Biomolecules
Micromolecules, Macromolecules- Proteins, Polysaccharides, primary and secondary metabolites, nucleic acid, Structure of protein and nucleic acid., Types of bonds - peptide bond, glycosidic bond, phosphodiester bond.

Practicals:
To prepare slide of T.S. of  monocot/ dicot stem/root.
To study the slides of parenchyma, collenchyma, sclerenchyma, palisade cells, stomata, T,S of Dicot / monocot stem/ root.

Topics discussed in the class (30/7/15-7/8/15)

Chapter-6 : Anatomy of Flowering Plants:
Types of meristematic tissue, Simple permanent tissue- Parenchyma, Collenchyma, Sclerenchyma, , Complex permanent tissue- Xylem, Phloem, Tissue systems- Epidermal, Vascular, Ground Tissue system. Structure of Monocot leaf, Dicot leaf, Monocot stem, Dicot stem, Monocot root, Dicot root, Secondary growth- Cambium activity, Intrafascicular cambium, Interfascicular cambium, Cork Cambium, Types of wood, Lenticles, Secondary growth in Roots.
Practical: Study the characters of a Flower.( Petunia)

Topics covered in class ( 21st- 29th july,2015)

Unit II- Structural organisation in Plants and Animals
Chapter-5 Morphology of Flowering Plants
Characteristics / features of roots , stem , leaves- their modifications, Flower/ Inflorescence types, Phyllotaxy, Aestivation, Terms assosciated with different whorls of flower.
Practicals : Study of stem, leaf and root modifications.
Study of different types of inflorescence.

Get aquainted with your singing companions- "Birds"

Indian Birds: Hear their sounds

Identify flowering plants and trees of India

Identification of common flowering plants and trees

Topics discussed in class ( 1st-20th july, 2015)

Chapter 3: Plant classification- Different plant divisions- Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms- characters , examples, reproduction modes, Life cycle patterns- Haplontic, Diplontic, HaploDiplontic, Uses of plants of different divisions.
Chapter 4: Animal Kingdom Classification: General features used for classifiction- Body organisation, Types of symmetry, types of coelom, No of Germ layers, metamerism, direct and indirect development, External/ Internal fertilisation, Study of different phylla of Non-Chordates and Phylum chordata with features and examples. Difference between chordates and nonchordates, Different classes of chordates with their features.