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.