ಚಿತ್ರದುರ್ಗ ಜಿಲ್ಲಾ ವಿಜ್ಞಾನ ಶಿಕ್ಷಕರ ಸಂಘ: 2008

Friday, December 19, 2008

Chitradurga District Level Science Exhibition December 2008 - Memorable Moments

Chitradurga District Level

Science Exhibition December 2008

Memorable Moments

Thursday, December 18, 2008

SSLC - Live Phone in Programmes on ALL INDIA RADIO Chitradurga from 28-12-2008

ಆಕಾಶವಾಣಿ ಚಿತ್ರದುರ್ಗ
ಜಿಲ್ಲಾ ಸಾರ್ವಜನಿಕ ಶಿಕ್ಷಣ ಇಲಾಖೆ
ಸರ್ವಶಿಕ್ಷಾ ಅಭಿಯಾನ ಯೋಜನೆ - ಚಿತ್ರದುರ್ಗ
ಎಸ್.ಎಸ್.ಎಲ್.ಸಿ. ವಿದ್ಯಾರ್ಥಿಗಳಿಗೆ ಪರೀಕ್ಷಾ ಸಿದ್ಧತೆ
ಪ್ರಾಯೋಜಿತ ವಿಶೇಷ ನೇರ ಫೋನ್-ಇನ್-ಕಾರ್ಯಕ್ರಮ
ಪ್ರತಿ ಭಾನುವಾರ ಬೆಳಗ್ಗೆ 9.00 ರಿಂದ 9.30 ರವರೆಗೆ
ಈ ಕಾರ್ಯಕ್ರಮಗಳಿಗೆ ಬಳಸಬಹುದಾದ ಫೋನ್ ಸಂಖ್ಯೆಗಳು
223271 ಮತ್ತು 223272 ಎಸ್.ಟಿ.ಡಿ. : 95-8194

ಸಂಪರ್ಕ ವಿಳಾಸ : ನಿಲಯದ ನಿರ್ದೇಶಕರು, ಆಕಾಶವಾಣಿ ಕೇಂದ್ರ,
ಚಿತ್ರದುರ್ಗ - 577 501 ಫೋ: 22328

Monday, December 15, 2008

District Level Science Exhibition 2008 at Chitradurga - Memorable Moments

District Level Science Exhibition 2008

at Chitradurga

Memorable Moments

Published in Suddigiduga Daily of 14-12-2008

Friday, December 12, 2008

District Level Science Exhibition December 2008 - A Report in Suddigiduga Daily - 12-12-2008

District Level Science Exhibition December 2008

A Report in Suddigiduga Daily - 12-12-2008

Friday, December 5, 2008

District Level Science Exhibition in Chitradurga from 11-12-2008 to 13-12-2008

District Level Science Exhibition in Chitradurga

from 11-12-2008 to 13-12-2008

Wednesday, December 3, 2008

Science Exhibition at Sri Obala Narasimhaswamy High School, Janukonda, Chitradurga Taluk

Science Exhibition at Sri Obala Narasimhaswamy High School

Janukonda, Chitradurga Taluk

Monday, December 1, 2008

World AIDS Day - December 1 - Programme at Sri Obala Narasimhaswamy High School, Janukonda, Chitradurga Taluk - A Report in Suddigiduga Daily

World AIDS Day - December 1 - Programme at Sri Obala Narasimhaswamy High School, Janukonda, Chitradurga Taluk

A Report in Suddigiduga Daily

30-11-2008

Tuesday, November 25, 2008

Spirogyra - Green Algae

Scientific classification
Domain: Eukaryote
(unranked): Archaeplastida
Kingdom: Plantae
(unranked): Streptophyta
Phylum: Chlorophyta
Class: Zygnematophyceae
Order: Zygnematales
Family: Zygnemataceae
Genus: Spirogyra

Spirogyra is a genus of filamentous green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is diagnostic of the genus. It is commonly found in freshwater areas, and there are more than 400 species of Spirogyra in the world.[1] Spirogyra measures approximately 10 to 100μm in width and may stretch centimeters long.

General Characteristics

Spirogyra is unbranched with cylindrical cells connected end to end in long green filaments. The cell wall has two layers: the outer wall is composed of cellulose while the inner wall is of pectin. The cytoplasm forms a thin lining between the cell wall and the large vacuole it surrounds. Chloroplasts are embedded in the peripheral cytoplasm; their numbers are variable (as few as one). The chloroplasts are ribbon shaped, serrated or scalloped, and spirally arranged, resulting in the prominent and characteristic green spiral on each filament. Each chloroplast contains several pyrenoids, centers for the production of starches, appearing as small round bodies.
Spirogyra is very common in relatively clean eutrophic water, developing slimy filamentous green masses. In spring Spirogyra grows under water, but when there is enough sunlight and warmth they produce large amounts of oxygen, adhering as bubbles between the tangled filaments. The filamentous masses come to the surface and become visible as slimy green mats. Mougeotia and Zygnema are often found tangled together with Spirogyra.

Courtesy : Wikipedia

http://en.wikipedia.org/wiki/Spirogyra