CULTURAL QA 06202424 TOPIC- BIOLOGY- QA BASED ON QUORA- Compiled
Q1 How can bats see at night? KR NOT JUST BATS ALONE. Dolphins and Whales: Cetaceans such as dolphins, porpoises, and some species of whales also use echolocation. They emit clicking sounds, and by listening to the echoes, they can locate prey, navigate underwater environments, and communicate with each other. Toothed Whales: Within the cetaceans, toothed whales like orcas, sperm whales, and belugas are particularly adept at echolocation. They have specialized structures in their heads calle melons that help focus and direct sound waves. Shrews: Some species of shrews, such as the Eurasian least shrew, use echolocation to navigate in low-light environments and detect prey like insects and small vertebrates. Swiftlets: Certain species of swiftlets, such as the cave swiftlet, use echolocation to navigate and find their way in dark caves where they roost. Oilbirds: Oilbirds are nocturnal birds found in South America that use echolocation to navigate in complete darkness within their cave habitats. These species have evolved specialized adaptations in their auditory systems and behaviours to effectively use echolocation as a tool for survival, navigation, and communication in their respective environments. Q2 Why is the cell called the unit of life? KR In biology, a "cell" is indeed considered the basic structural and functional unit of living organisms. Cells are the smallest entities that can independently carry out the activities necessary for life. Here are some key points about cells: Structure: Cells are enclosed by a membrane (plasma membrane) that separates the cell's interior from its external environment. Inside the membrane, cells contain various organelles (such as the nucleus, mitochondria, endoplasmic reticulum, etc.) that perform specific functions. Function: Cells perform a wide range of functions necessary for life, including metabolism, growth, reproduction, responding to stimuli, and maintaining homeostasis. Types of Cells: There are two main types of cells: Prokaryotic Cells: These are simpler cells found in bacteria and archaea. They lack a defined nucleus and other membrane-bound organelles. Eukaryotic Cells: These are more complex cells found in plants, animals, fungi, and protists. They have a nucleus that houses the genetic material (DNA) and membrane-bound organelles. Cell Theory: The cell is a fundamental concept in biology, central to the cell theory proposed by Matthias Schleiden (plants) and Theodor Schwann (animals) in the 19th century. This theory states that all living organisms are composed of one or more cells, and that cells arise from pre-existing cells. Unity in Diversity: Despite the diversity of life forms on Earth, the fundamental principles of cell structure and function are remarkably conserved across different species, illustrating the unity of life. Understanding the cell as the basic unit of life is crucial in biology, as it forms the foundation for studying organisms at various levels of complexity, from single-celled organisms to multicellular organisms like humans. What is in the universe is also in the body is called Yat ande dat brahmande in Samskritham. The Greeks called it microcosm (body) and macrocosm (earth or universe). The Upanishads also say, "One is in all, all is in one." Everything is interconnected. are dependent on each other. They said that they cannot be separated separately. Scientists have similar views on nuclear and nuclear energy. The Upanishads' descriptions of Brahman and Atman correspond to scientific-physical concepts: “It is the greatest of all, the smallest of all the smallest. Neither is the theme; Not subtle. Neither fire nor water. Not shadow, not darkness; Not air, not gas; Not attached to anything, tasteless, smellless, eye, ear, nose, mouth, not inside, not outside. Even if it is taken, it will not decrease. If it is taken from it, it will not diminish, it will remain (Purnamathapurnamitam ………………..purnam eva udichyate)- Scholars say that all this in Brahadaranyaka Upanishad is like “Quantum Theory” in physics. There is a small space in the heart. It has enough space outside to expand. Everyone should know that. Outside the sun, moon, and stars, the heavens are within the space of the heart. (Chandogya Upanishad) Verse 8.1.3 यावान्वा अयमाकाशस्तावानेषोऽन्तर्हृदय अकाश उभे अस्मिन्द्यावापृथिवी अन्तरेव समाहिते उभावग्निश्च वायुश्च सूर्याचन्द्रमसावुभौ विद्युन्नक्षत्राणि यच्चास्येहास्ति यच्च नास्ति सर्वं तदस्मिन्समाहितमिति ॥ ८.१.३ ॥ yāvānvā ayam ākāśastāvāneṣo'ntarhṛdaya akāśa ubhe asmindyāvāpṛthivī antareva samāhite ubhāvagniśca vāyuśca sūryācandramasāvubhau vidyunnakṣatrāṇi yaccāsyehāsti yacca nāsti sarvaṃ tadasminsamāhitamiti || 8.1.3 || 3. [The teacher replies:] ‘The space in the heart is as big as the space outside. Heaven and earth are both within it, so also fire and air, the sun and the moon, lightning and the stars. Everything exists within that space in the embodied self—whatever it has or does not have’. AND TIRUMULAR TRANSLATED IT IN TAMIL AS: அண்டத்தி னுள்ளே அளப்பரி தானவள் பிண்டத்தி னுள்ளே பெருவெளி கண்டவள் குண்டத்தி னுள்ளே குணம்பல காணினும் கண்டத்தி னுள்ளே கலப்பறி யார்களே Cell, atom, space any difference? K Rajaram IRS 24624 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx On Mon, 24 Jun 2024 at 03:26, 'gopala krishnan' via iyer123 < [email protected]> wrote: > *CULTURAL QA 06-2024-24* > > *TOPIC- BIOLOGY- QA BASED ON QUORA- Compiled* > > *Q1 How can bats see at night?* > > A1 Violet Sanchez, May 22 > > Bats have the ability to see at night through a process called > echolocation . They emit high - frequency sounds and listen for the echoes > that bounce back , allowing them to create a mental map of their > surroundings . This allows them to navigate and hunt for insects in the > dark . Additionally , bats have large , sensitive ears that help them > detect the slightest movements and noises . This combination of > echolocation and sensitive hearing allows bats to see in the dark with > incredible accuracy . > > *Q2 Why is the cell called the unit of life?* > > A2 Ozonex Edits,Studied Biology & Chemistry at University of > Pune (MES Abasaheb Garware College)Thu > > Cell is the Structural and Functional Organism of any living organism. Our > body is composed of Cell. > > The cell is called the unit of life because it is the smallest structure > capable of performing all the processes essential for life. Here's why: > > 1.Basic Building Block: Every living organism, from the tiniest bacteria > to the largest whale, is made up of cells. In multicellular organisms, > cells come together to form tissues, organs, and systems, while in > unicellular organisms, a single cell carries out all life functions. > > 2. **Fundamental Functions**: Cells perform all the basic functions of > life, such as metabolism (converting nutrients into energy), growth, and > reproduction. They also respond to their environment and maintain > homeostasis, which is the balance of internal conditions. > > 3. **Genetic Material**: Cells contain genetic material (DNA) that guides > their functions and is passed on during reproduction. This genetic code is > essential for inheritance and the continuity of life. > > 4. **Complexity and Organization**: Despite their small size, cells are > highly organized structures. They have various organelles, like the > nucleus, mitochondria, and ribosomes, each performing specific roles that > contribute to the cell's survival and function. > > 5. **Self-Sufficiency**: A single cell can carry out all necessary > activities to sustain life independently, demonstrating that it is the > smallest unit that embodies the properties of life. > > In summary, the cell is the basic unit of life because it is the smallest > entity that can independently perform all the functions necessary for life, > ensuring the survival, growth, and reproduction of the organism. > > *Q3 What plants attracts snakes?* > > A3 Ambuj Sharma,Digital Marketing Executive at BytesView > Analytics Pvt Ltd (2022–present)May 14 > > Yes, you read it right there are many plants that attract snakes. Basically, > plants contain high fragrances we can say rosemary, morning glory, jasmine, > etc. attract snakes even more. Snakes have a smell sensor called > Jacobson’s organ which attracts them to flower fragrance. There are some > plants that attract snakes: > > 2. Citrus Tree 3. Sandalwood 4. Oak 5. Palm Tree 6. Juniper bushes > > There are some plants that attract snakes, just be careful before planting > them otherwise can take some precautions before planting. > > My note- Authority not checked by me. There are jasmine plants and Lime > trees in my garden. My thinking was lime trees repel snakes. However I > keep my premises very neat and tidy, so far no snakes are seen by their > side. > > *Q4 What is the smallest bird in the world?* > > A4 Poppy Brunskill, Jun 7 > > The smallest bird in the world is the Bee Hummingbird (*Mellisuga > helenae*), native to Cuba. This diminutive bird measures just about 2.2 > inches (5.5 cm) in length and weighs approximately 1.6 to 2 grams, lighter > than a penny. Despite its tiny size, the Bee Hummingbird is notable for its > vibrant plumage; males display striking iridescent feathers with a bright > red throat and a greenish-blue upper body. > > These birds are incredibly agile fliers, capable of hovering in mid-air > and flying backward, thanks to their rapid wing beats, which can reach up > to 80 times per second. Their diminutive size and high-energy demands > necessitate frequent feeding, primarily on nectar from flowers and small > insects. The Bee Hummingbird plays a crucial role in pollination, making it > an essential part of its ecosystem despite its minuscule stature. > > *Q5 Why has natural selection never evolved to produce an > immortal species?* > > A5 Steve Baker, Senior Software Engineer (2013–present)May 19 > > An immortal species would be unable to evolve - and if it can’t evolve, > then evolution can’t make it better. > > That said - there is just ONE known species that is believed to be > immortal. A jellyfish called Turritopsis dohrnii can respond to stress by > reverting to a “childhood” stage - it then goes through it’s normal > lifecycle.So - the adult animal can go back to being a polyp and then > starts it’s life over again. > > Gopalakrishnan 24-6-2024 > > -- > 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/iyer123/1910968877.5149625.1719217555774%40mail.yahoo.com > <https://groups.google.com/d/msgid/iyer123/1910968877.5149625.1719217555774%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]. 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