UPSC IAS: High Yield Series: Environment and Ecology Part 1.2 - Prepare for UPSC IAS

[@yaduwithjadu]

dont even think about giving a second thought... you're doing a commendable work. many of the people are getting better results. You are inspiring me to make a video series like you..let me clear my exam first. THANK YOU SO MUCH

[@BipinKumar2]

so knowledge packed in this small video...amazing!!

[@nathansushanth]

sir, the energy with which you teach is makes these videos awesome. just like entertainment session.

[@gobhatia123]

Your smile at the time you talk of climax is suspicious. Love your videos. Thanks for making these. Please create more of some polity and history.

[@shashanksinha2031]

Sir i like the way u say "wats up aspirants" this really motivates me for my upsc prepration and the way u make us understand the tough topic in a very simpler manner by this awesome work i have consider u as my "ROLE MODEL"

[@abhishekprasad1218]

Awesome video sir .... I have started m preparation from feb ... i am following ur video from the first day .. thanks for the video... A helping hand for aspirants like me .... THANKS from the bottom of m heart

[@shalinisinha9281]

Sir ...I have no words to thank you...you are simply awesome. Please always guide us like u always do. thankyou very much

[@smritimittal1603]

ur way of teaching is really very appreciable sir mtlb mzaa aa jata h bilkul padh k

[@RajKumarkankam]

the way you speak with funny accent refreshes us all the time sir.and its really helping us alot in learning the things in very short time.hope you make more and more videos for aspirants like us.

[@ujjwall85]

Sir, you are a real gem of a personality!! Thanks for uploading these videos.. :) 1000 stars for your effort and your dedication.. :) India is really in good hands.. :)

[@sandeepimmadi2243]

AMENSALISM :Amensalism is any relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected. There are basically two types of amensalism: competition and antibiosis. In competition, a larger or more powerful organism excludes another organism from its source of shelter or food. In antibiosis, one organism secretes a chemical that kills the other organism, while the one that secreted them chemical is unharmed. Two examples of antibiosis are provided by the bread mold Penicillium and black walnut trees.

[@satheeshkumar1986]

Dear sir .. may i know from which book or from what source you are collecting all these materials.

[@mukundrao1641]

female mosquito does not need human blood for survival, it need blood for nourishment of its eggs. so it does not classified into the definition of parasite. Thanks for making me search for the answer. now i clearly understood the parasite definition.

[@garimaa820]

Sir your explanations are very concise in nature that's why many times we don't able to clear our concepts..

[@aksharbokade7252]

Sir you are awesome plzz keep going...I started my studies some days before... u have been a great mentor... lots of love

[@priyankadey]

This video was superb not just because of the content but the manner in which you explained Mr.Saini! Hahah.. Brilliant.. I had the most enlightened time watching and learning from this video and ended with a quirky smile on my face! Well perhaps the reason why the female anopheles is called a vector and not a parasite is because it does not exactly feed herself of the blood but her fertilizing eggs( like you explained..reproduction not nutrients) and she just bites and leaves. Doesn't 'cling' on to humans.. :)

[@NareshKumar-vr3mr]

Thanks for your time sir..respect...with great ecstasy am expressing your endeavor will reaching rural people like me your teaching is absolutely flawless ..stupendous am following your lectures step by step...I wish u and hope u will become an amazing officer in ensuing days..long live..sir...!!!!

[@surendrapalSingh]

Sir... Personally speaking all your videos are awesome. Your teaching style (combining info with humour) is simply brilliant. Watching your video for 15-20 min is much more useful than studying a book or some material for more than 3-4 hours. Requesting you to please keep on making such videos in future!!!

[@Prachi2091]

Your style of explaining is very easy to comprehend. Please continue making these videos. They are very helpful. Thank you :D

[@rajlalr6655]

thanxxx sirrr,,,,am watching your video step by step along with my studies,,,,i thing all are doing like that.....so kindly do more videos,, its extremely helpful !!!!!!!!!!!!

[@musha8622]

mastt hai yaar....serious studies + spicing humour = roman saini's unacademy ... njoying your classes :)

[@arpitsaxena3096]

really awsum work , helping those it jobs workers who r spending 10 hours in infosys and have very little time to study.

[@pragyamishra900]

Thanks a lot sir, ur language is so simplistic,understandable for hindi medium also,...

[@smilepleasena2712]

sir we really very much thankful of u for ur altruistic effort for whom who r not able to attend coaching

[@prakhardixit988]

You rock roman !! great job ,it's actually worth calling "HIGH YIELD SERIES". Here's a suggestion; if you could manage then do add previous year questions related to each lecture at the end of the topic,this would enable everyone to co relate the level of UPSC with the content of subject. Thank you.Keep up the good work !!

[@swabhimanpatel4154]

Resp. Sir, just started watching your videos.they are highly valuable and presented in easy to understand.

[@mercyman007]

Roman sir in different mood today. ? Awesome, really helpful. Thanks sir, pls make more videos.

[@aforankit0087]

very helpful. thanks for doing so much hard work for us......keep going..god bless you

[@veganforlifeandbeyond]

You are just awesome...very interesting way of describing things..thanks

[@vijayasiripilla5917]

Please keep on making the videos!! Please do not stop. The videos are awesome!!! You are awesome!!

[@ajaysingh9412]

after my disappointed performance in this prelims 2014 because of environment questions ,i was unable to think what should i do,whether i will join coaching or not ,but after watching your vedios ,i feel confidently that i shall clear the exam with myself. thanks alot sir for helping me and many other needy aspirants .please sir keep helping us.your way of explaining the any topic is jabardast. thanks once again.

[@shashanksaraswat2960]

Ajay Singh were you able to crack question from environment and ecology in prelims after taking these lessons ??

[@arakashmahale1]

Herbert Spencer first coined the phrase "survival of the fittest", Darwin used it along side "natural selection" to mean,"better evolved to survive in a particular environment".

[@samswain1904]

Hi sir, ur videos are very good and the way u present and go through the topics is awesome..

[@BankersKattaOfficial]

Thanx for simplifying such hard topics in the simplest way.....

[@prabhakaran01]

Thx sir...whenever I see ur face I feel more enthu and eager...I am luving my preparation becoZ of u....hats off sir

[@chaitanyaneel482]

nice one and useful for short term ..thank you sir..plz do keep posting ur videos..

[@09ashish09]

1st of all thanx alot sir ...............u really doin awesome thing.......

[@learningcasually8532]

awesome lecture...another example of parasitism is us watching these videos and not even liking and subscribing these awesome videos..

[@meerapattanaik1588]

Sir ur lectures are practically helpful from exam point of view

[@yuvarajece3102]

Thank you sir .we need more for our 2015 prelims preparation.well done.

[@AtulAnand1]

as Female anopheles mosquito does not completely depends upon human blood for their food,residence or transport,so it cant be classified as parasite of human. And as it provides one of the necessary stage for development of Malarial parasite,so its termed as Vector.

[@bracketcode]

Shandaaar...Jabardassst....Zindabaaaad........!

[@financialveterans1147]

really helpful for a initiaters like me.....thanx a lot sir

[@greeshmag9964]

ur videos coupled with learning and happiness. thank u for being such an inspiration roman sir

[@gauravvishal6550]

First of all thanx for ur effort that u r putting in for us.Ur doing a great job,,,pls continue it

[@aartiOutlook]

Thank you Dr.Roman saini, your videos of ecology is still useful and to the point 🙏 👍

[@ashutoshkumarkunwar4196]

yet another awsm video. Kudos to your efforts. thanks a loads

[@rasikasardar1216]

sir u dont need to give a second thought ... ur videos are really helpful....

[@sreepriyamka5136]

Hai sir.....tanq so much on the awesome work you put in ... very very thankful to you sir...Please keep making such videos and help the aspirants like us

[@shashikantlodhi772]

you are simplifying things for us. Thank you very much sir g.

[@Short_Notes_TSPSC]

ur videos r very useful sir. thank u for giving online tutorials for people like me. am preparing in home only by watching ur videos n suggessions. thank u sir

[@rahulrawathere]

Awesome video... really good for revision..!!! keep making videos

[@jayashrijaya7942]

funny beginning,, interesting ,,resourceful useful, thank u sir

[@ajaykumar-jt2ds]

thank you sir. it is very interesting video, specially you way of speaking..........

[@lovelyphulkari6836]

u doin great work :-) keep it up,..its really helpin aloottt..really proud our india has a youth as u :-)

[@Jaykumarjadhao]

Thanx a lot Sir for fabulous work. It reduced my work drastically. Keep it up :-)

[@sourabhmishra7989]

best videos i have ever seen ,i really like your videos sir, it helped me a lot and develop enthusiasm,i have also registered on your website . and wait eagerly for all your upcoming videos, keep making ,really a great step thanku so much sir

[@premgahlout5488]

i am grateful to you sire ,for this wonderful video.

[@9007540353]

Thankx Roman for this awesome video.......

[@komalbhanot5881]

Valuable videos...waiting for more SnT videos..i am following your vidoes please provide us more knoewledge

[@neelesh226]

Good one And female anopheles is vector for Plasmodium

[@pratibhamali3845]

it's very awesome. please make more videos on ecology and environment. you explaned with examples it's great.

[@vhkip3704]

the humour in the lectures keeps the motivation alive,,and helps me to keep on watching your videos :)

[@Ranjithkumar-ki1bg]

Sexual cycle of plasmodium takes place in F anophles and forms spores , that's why categorized as vector since it's harboring infection

[@tushargahlotra4344]

Thank you Roman sir. You are doing an awesome job. Thanks alot

[@manishmukul5874]

funny sound....sir...interesting....good lecture...waiting for more videos..thanks sir

[@mpattanaik7]

fan of salman khan

[@prarthanabandyopadhyay4347]

plz continue making..these are actually helpful for freshers

[@swapnildoke4214]

Voice modulation in beginning of this video got me cracking :D.. Thank you very much for teaching and entertaining us at the same time Sir :) !

[@kartheekpeddakotla3844]

Awesome help is being received...Thank you

[@sahilswangla5206]

Answer to your question… Female mosquito is a vector because it carries and transmits infectious agent.. And it is not a parasite because a parasite never leaves its host.. Whereas female mosquito leaves its host… is it correct…??

[@caustic576]

Sahil Swangla Furthermore, a parasite thrives on food for its entire lifecyle (like Plasmodium) but Anopheles Mosquito only does that during its reproductive cycle. Finally, there are certain characteristics of parasites like Roman mentioned (Loss of Digestive system, sensory organs)- mosquito doesn't qualify.

[@baljeetsingh-fd7cd]

Sahil Swangla yeah in simple words parasite shud get benefit from host but anopheles does not get benefit but plasmodium will get which is transported by anopheles.it just transport thats y it is a vector not parasite...agree lil bit ?no+-

[@winnerwordsmith]

Sahil Swangla In the case of Mediterranean Ophyrus... the plant gets its pollination done. But what is the benefit for the bee? Can we call it commensalism or mutualism?

[@kesharigovind4933]

Roman You are Great. We all love you.

[@dineshlohar3837]

Sir You are awesome .....I loved whole serious uploaded by you...

[@purushothamraju3659]

Very useful and informative video Sir !

[@raghavhind2352]

Great initiative sir.... Keep on doing such divine job sir....

[@madhurimahajan1946]

thanks a lot sir for this excellent vedio......

[@UnboxKindness]

Sir you are doing an amazing work... selfless motive.. bt sir fir non bio students ..it is already hard to undrstnd these terms..nd uh have used very concise words by using , only.. nd we cant undrstnd d words wht u speak in speed .. we are making notes too.. bt d way uh teach is damn good. ..thanks a lot sir

[@eimizaila5461]

Pliz continue making...its so helpful

[@sushantkumarbarik2420]

please don't stop to making high yield video..it's really awesome

[@Boihkp12]

love your work. highly appreciated. thanks a ton.

[@Mylife-ek1or]

Great work sir. You are really helping many aspirants and giving hope .

[@vivekkoladyravi4911]

Population interaction summarized: Mutualism: where both the organisms benefit. Ex: Mycorrhizae and higher plants, Lichen, pollination Commensaliam: where one organism benefits while the other is not harmed.Ex: Cattle egret and grazing cattle Ammensaliam: where one organism is unaffected and the other is negatively affected. Ex: trees secreting chemicals harmful to grass growing under them. Predation: where one organism kills and eat the other organism. Ex: Moth and prickly pear cactus Parasitism: Where one organism benefits and cause harm to other organism, though not instantaneously. Ex: Copepod on fish Competition: fight for survival between two organisms for food. Ex: flamingos and fish on zooplankton

[@vikashmaan3134]

ASM VIDEOS BRO KEEP MAKING VIDEOS ITS VERY INTERESTING

[@anuragjoshi9362]

really interesting ! I am not appearing for this exam this year,but your teaching style is very impressive. :)

[@vinaysaxena422]

Please make the next part of this series. Its really helpful....Thanks a Lot.

[@AayushTanwar]

Thanx alot Roman. Continue the gr8 work !!

[@gurneetsingh1768]

very well done sir... brilliant work.. keep uploading videos as these are really necessary for aspirants...THANK YOU

[@nikhilpurohit4017]

please cover whole syllabus...awesome videos ....hey guys

[@satheeshkumar1986]

Extremely helpful sir please make more and more videos also please intimate which material to follow for ecology & environment

[@TerribleThings]

Helpful.. way of your teaching is totally awesome.. really helpful (;

[@sathwikbayya5457]

please continue making these helpful videos

[@ronk337]

good lesson keep up the good work, keep making videos

[@gyanshankar5911]

excellent sir .................thaks a lot

[@sanjanabhati2341]

really nice work sir, yes we want more videos

[@rennydsouza884]

sir. I am depending on your videos for preparing. my doubts are being cleared through your videos. so plz dont stop making videos

[@abhishekkumar-it7qq]

I love the energy with which u deliver

[@lalithkumar2373]

thank you sir keep continun ua marvelous work

[@Themonk-h2d]

awesome representation skill Sir... Superb......

[@justscan]

thank u very much ....continue good work

[@sfrzschannel]

Yet another Awesome video.. You are putting a lot of efforts sir ! Sir please make videos pn economy related topics i.e how to approach economics!! Please do make

[@ashumedico12]

PLEASE KEEP UPLOADING ......AND ONE REQUEST....AVOID BACKGROUND GRAPHICS FOR NEXT TIME.....UR PREVIOUS VIDEOS ARE VERY NEAT AS COMPARE TO THIS ONE ....SO PLEASE TRY TO STICK WITH THAT .....THANK U ...

[@abhinavrpk]

hats off to your determination.

[@ankulsharma2590]

Very informative... Keep up the good work :-)