S3E35 Cube chatShaala: Exploring new ways of Learning

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Timing:5.30 pm to 9.30 pm
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CUBE ChatShaala on 13th December 2020
25 CUBists from 21 Centres had joined the webinar.
Map

ANDHRA PRADESH:
Nellore: Ujwalaraj

ASSAM:
Sonari: Susanta Tanti

BIHAR:
Sitamarhi: Anamika Singh

DELHI:
AND College: Harshika Dewangan
Dyal Singh College: Dr P. Chitralekha

JHARKHAND:
Morabadi, Ranchi: Rechel Tirkey

KERALA:
Kozhikode: Arunima
Ernakulam: Ashikha Farzana, Nikitha TN, Pooja Baiju, Rexeena Sebastian
Thriprayar, Thrissur: Aswathy Suresh
Malappuram: Gopee Krishna
Thrissur: Rayis
Thanniam, Thrissur: Sidhy PP
Palakkad: Sujith MS

MAHARASHTRA:
South Bombay: Arunan MC
Nerul: Drishtant M Kawale
Powai: Lydia Mathew
Bandra, Mumbai: Saida Sayyed

TAMIL NADU:
Chennai: Anjali Chauhan

UTTAR PRADESH:
Moradabad: Kiran Yadav

WEST BENGAL:
Garden High School, Kalyani: Aranyak Sarma
Kolkata: Batul Pipewala, Sukriti Maity

Quoted by @saswathy679
IMG-20201214-WA0033
13 December 2020 [CUBE Chatshaala.]

Discussed about model system FRUIT FLIES feeding habit of Drosophila.
Peoples from Cochin college 7/12/2020 - 10/12/2020 started to observing flies which are present in the banana (Activity pattern of fruit flies)
They made a setup 3 bottles same hight and added banana in to the 3 bottles (Kept in same area - Kitchen ). And observing the flies which are present in the bottles at 2 hour interval. Their graph shows 2 different time they got peak of flies 11:00am: 30 flies, 3:00pm: 20 flies shows in graph.This study was done in December.The same study earlier done in August month. Also get same peak at 1:00pm & 8:00pm. So there is difference coming from time period. This study was done in August.

Why the Peak difference came August/December graph same study :thinking:?

•December have short day length & long night period.
•August have long Day length & short night period.
May be it will effect flies number variation at different time. But the pattern is almost same in both same study done in Fruit Flies.
IMG-20201214-WA0033
Hypothetical graph made based on expectations. If we keep the same 3 banana bottles different area of house like kitchen Garbage Bin, Garden, Window side expecting number flies will varies in each 3 bottles but pattern will same.
IMG-20201214-WA0034
•Graph of Fruit Flies Activity Pattern .
•Graph of Phyllanthus Sleep Wake Cycle.
IMG-20201214-WA0037
Discussed about model system PHYLLANTHUS plants photos from different parts of country, People are working in this simple model system, studies sleep & wake time of plant. There is a photo came from @KiranyadavR mam Moradabad(UP) observed something interesting that phyllanthus plant are still not completely closed their leafs after the sunset. Why :thinking:?
Is there any internal clock controlling their body mechanisms :thinking:?
IMG-20201214-WA0036
1.What do we mean by internal clock?:thinking:
2.Negative Feedback: what does it do?:thinking:

"…It is less obvious that most organisms have the innate ability to measure time. Indeed, most organisms do not simply respond to sunrise but, rather, anticipate the dawn and adjust their biology accordingly. When deprived of exogenous time cues, many of these diurnal rhythms persist, indicating their generation by an endogenous biological circadian clock.

"http://www.plantcell.org/content/18/4/792

When deprived of exogenous time cues, many of these diurnal rhythms persist, indicating their generation by an endogenous biological circadian clock. Plant Circadian Rhythms
C. Robertson McClung
Published April 2006http://www.plantcell.org/content/18/4/792