Pranam. Good. K. R. IRS. 13522 On Fri, May 13, 2022, 19:21 'gopala krishnan' via iyer123 < [email protected]> wrote:
> *CULTURAL QA 05-2022-12* > > *BEING A COMPILATION THERE MAY BE ERRORS* > > Q1 Should fungi be classified as plants? Why or why not? > > A1 Ken Saladin Emeritus professor of biology Updated May 3 > > Upon casual observation when we see these stalky mushrooms growing out of > the forest floor*, it’s hard not to think of such organisms as plants, > isn’t it?* Until 1969, that’s how biologists regarded them. (See > “Taxonomy” section of[1]; see also[2].) It’s hard, too, to think of these > mushrooms and the slimy mold on this petri plate, the bracket fungus > growing on a tree, and microscopic yeasts, as members of the same kingdom. > > That’s where science comes in, taking a closer look at things with all the > tools at our disposal—morphology, physiology, biochemistry, and genetics in > this case. > > *Fungi (from unicellular yeasts to the largest mushrooms and bracket > fungi) have cell walls made of chitin (the substance also found in insect > and crab exoskeletons, roundworm eggs, cysts of pathogenic amoebae, and > worm cuticles)[3] ; plants have cell walls of cellulose.* > > Fungi are heterotrophic[4] (absorbing ready-made organic nutrients from > other organisms or their remains); most plants are autotrophic (making > their own carbohydrates). > > All plants are multicellular; many fungi (particularly the yeasts) are > unicellular. > > When plants move—whether bending toward light or slowly changing location > like the “walking” trees—it’s by growing in a *new direction through cell > division and elongation. When fungi move, it is by cytoplasmic flowing in > their hyphae, in an amoeboid fashion*. (The brackets and mushrooms you > see are just reproductive bodies. They’re basically stationary; the > movement occurs in the hyphal networks on and below the soil surface.) > > Q2 Is the continent of Australia the only continent in the world > that has only one country in it, namely Australia? > > A2 Claire Jordan Degree in biology and folklore; programmer, shop > owner, secretary on newspaper May 2 > > Maybe, maybe not. If you accept the recent decision, based on continental > shelves, to call the raised area on which New Zealand sits its own > continent, Zealandia, then that too is a one-country continent. If you > stick to the old system of saying that New Zealand is part of a continent > called Australasia then neither New Zealand nor Australia is a one > country continent. > > Q3 Are baby mammals designed to be cute, or is it just that > humans are set up to find them cute? > > A3 C.S. Friedman Science Fiction and Fantasy novelist Apr 28 > > Yes. The cuteness of young animals involves features that all baby mammals > and many other species share. They are: > > Head disproportionately large for the body. Often large eyes, > proportionate to face. Shorter muzzle/flatter face. Rounder face > > There are some other features as well, but those are the noteworthy ones. > > All the species for whom this is true are “programmed” to respond to those > cues by instinctively wanting to protect and nurture their young. > (Scientific translation: Natural selection favored individuals where the > young had those features and the adults had those instincts.) > > So when a human sees a baby of any such species, it instinctively responds > to its “youth” features by wanting to nurture and care for the infant. > (And to pet/cuddle it as well, because mammals take comfort in physical > contact.) And because those features are universal, animals may respond to > them even with babies that are not of their own species. > > And here is a spider. It’s an artistic creation, not a real spider, but it > shows you how even a creature that many normally find unappealing can > strike the “awwwwwww” nerve just by adding the features I have listed above > > Q4 Why can't real airplanes be designed so that they can "float" > or "glide" like paper airplanes, in case there is a problem? > > A4 Andrew McGregor Flown several types of light aircraft. May 6 > > *They are, and they do.* > > *A total engine failure means the plane just turned into a glider. They > fly just fine like that, but you are going to land fairly soon.* > > Which is why, *when flying a single engine plane, you pick a continuous > series of likely forced-landing location as you fly along*, so that > (ideally) when the engine fails, you already know where you are going. > > This is also why almost all scheduled services are in multi-engine planes; > they have to fly reasonably well with one failed engine, well enough that > with careful planning there is always an airport within single-engine > range of the entire flight path. > > All licensed pilots have practiced engine failure procedures till they can > do them in their sleep, and that includes glide landings in light singles. > The main content of the multi-engine rating is engine failures and how to > deal with them safely. > > Three very famous aviation incidents involving total engine failures have > happened, and in all those cases everyone survived: > > A 747 flew through a volcanic ash cloud and lost all four engines. They > were gliding for 45 minutes (yes, really) until they got one, and then > eventually three, engines started; one failed again, so they landed on two > engines. > > A 767 was incorrectly fuelled, and ran out mid-flight, landing on a > disused airbase in Canada (the “Gimli Glider” incident). > > Most famously, the ‘Miracle on the Hudson’, where an A320 lost both > engines to birdstrike at low altitude over New York City, and made a glide > ditching in the Hudson River. > > In all of these, the pilots had full control all the way through the > incident. Two of them were gliding for quite a long time. > > Q5 What did you see today that melted your heart? > > A5 Aashish Kumar Dimri News and Political Analyst Mon > > *Idli amma : M Kamalathal (85 years old),a resident of Coimbatore, > Tamilnadu, is known as Idliamma* (idli selling mother) for her mouth > watering idlis along with hot piping sambhar and chutney . > > *She prepares them specifically to migrant workers and destitutes at Rs 1.* > She has been selling her delicacies since last thirty seven years. > > *This loving elder stays alone and does her own chores- domestic to > kitchen duties.* > > Selfness : Naturally, her selflessness has impacted many; who want to help > her in a way or another. > > *Gratitude : As a gratitude, Anand Mahindra, a well known Indian tycoon > and philanthropist gifted her a new home on international Mother’s day !* > > Salutations to Idli-amma and Anand ji for being humane ! > > Perhaps: “Sometimes it takes only one act of kindness and caring to change > a person’s life.” : Jackie Chan (actor-philanthropist) > > Q6 Why did some civilizations fail to invent the wheel when it is > so obvious? > > A6 Cyrke Stuffl Former Currently a Retired Boomer at Home at > Hospitals (1979–2009)Apr 21 > > The wheel is one of the most influential inventions of ‘primitive > technology’, but i.e. *It was not until 3500 that one of the sharp-witted > inventors came up with it. *By this time, humanity had already used > channels, alloyed metals, and played complex instruments such as the harp. > > It was not difficult to produce a cylinder that rolled at its head; the > trick was to make this stable. “At the heart of this was the concept of the > wheel axle,” said David Anthony, an anthropologist at Hartwick College and > author of the book Horse, Wheel, and Tongue. *The secret of the stable > axle and the rotating wheel was that the former had to be almost perfectly > smooth and round, as had the holes in the center of the wheels*. > Otherwise, friction made it difficult for the wheel to rotate, and the axle > had to fit comfortably in the holes for the rotation to take place freely. > > *Whoever invented the wheel needed a lot of wood as well as metal tools to > make the holes and axles.* According to Anthony, the fact that the wheel > was invented only so late was due to the relatively late date of the > development of the carpentry trade, since only so the use of the bronze > chisel spread around 4000. > > According to the current state of science, the wheel was invented at one > time, in one place. From then on, however, it spread rapidly in Eurasia > and the Middle East; so much so that it is almost impossible to tell who > came up with it and where. The first images depicting carts come from > Poland and the Eurasian steppes, so it is likely that this may not be the > region where Mesopotamia, Iraq today, was born. > > *According to the Finnish Indologist Asko Parpola, the linguistic sources > clearly show that the “perpetrator” must be sought among the* > representatives of the Tripoli culture established in the territory of > present-day Ukraine. According to the researcher, this is also indicated by > the fact that many miniaturized "carriage models" used for children's play > areas are known from the culture. > > Q7 When did they stop using cast iron sewer pipes? > > A7 Cleaning Teach Stay with Cleaning Teach to get information > about Cleaning Apr 27 > > *In 1980, cast iron pipes were no longer the pipe of choice*. *Builders > and plumbers replaced cast iron with rigid PVC (Polyvinyl Chloride > plastic), which is easier to make, can be made quickly, is harder than > other options*, and has greater tensile strength. It is essentially a > cheaper, faster alternative to cast iron. > > *All the above QA are from Quora website on 13-05- 2022. * > > *Quora answers need not be 100% correct answers .* > > *Compiled **and posted by R. Gopala krishnan on 13-05-2022* > > > > -- > You received this message because you are subscribed to the Google Groups > "iyer123" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/iyer123/886989309.2279381.1652449868491%40mail.yahoo.com > <https://groups.google.com/d/msgid/iyer123/886989309.2279381.1652449868491%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/thatha_patty/CAL5XZoom6C0Y4ibTf2DVYLAECS9Gnmdv4JmiKknpUv_a-Ykdjg%40mail.gmail.com.
