Knowledge for All, without Barriers…
There are many insects, plants, grass fungus which are harmful to farms and forests. So, they are considered unwanted insects, unwanted plants, etc. For preventing
We have often heard how plants are different from animals, how animals are different from humans, how plants are different from humans, and so on.
There are many species on planet earth that either live on plants or one another. We have often seen certain small animals living on the
The human body is complicated and depends on an excessive number of biological processes for it to work properly. Numerous chemicals support the biological or
Hormones play an important role in the functioning of various organs and organ systems of the body. They regulate activities of cells and organs and
We might have studied a lot of things regarding the human system in our science classes. We have studied a lot about the respiratory system,
There are a variety of organisms present on this earth. Plants, humans, and animals have their way of living. Some feed on the surroundings, some
Plants are the significant parts of nature on earth. They help us in providing oxygen and taking in carbon dioxide. This is the basic advantage
We have studied many terms in biology that has helps us in understanding various systems of our body. The reproductive system, immune system, nervous system,
A cell is the basic building block of life. It is the structural and functional unit of life. All living organisms like bacteria, animals or
Autotrophs The organisms which can use materials from inorganic sources to produce their own food are known as Autotrophs. The word “Autotrophs” is a combination of
Deep inside you, on your surface, and all parts in between, fundamental functional units called cells are busy 24/7 keeping your body in a living
Circulatory System The circulatory system is the body’s transport system. It is made up of a group of organs that transport blood throughout the body.
Unlike animals, most plants do not need to find food, because they can make it for themselves. Plants use energy from sunlight to turn water
The study of the chemical processes of all living things is called biochemistry. These processes include respiration (breathing) and the digestion of food. Carbon atoms
Any living thing that is invisible to the naked eye and can be seen only under a microscope is called a microorganism. They include BACTERIA, protists,
Cloned bull named Got 1938 Cloning envisioned. Dr. Hans Spemann (Germany) proposed an experiment to remove the nucleus from an unfertilized egg and replace
Genetics is the study of how living things pass their features from one generation to the next. Your sex and your chances of developing certain
The use of microbes (micro-organisms) to produce and process materials is called biotechnology. Bacteria and yeasts are used to produce products, such as yogurt, cheese,
The tiniest living unit that exists is a cell. Cells are the building blocks of all organisms. Each cell has a nucleus containing a set
WHAT IS THE EVIDENCE FOR EVOLUTION? Evolutionary clues are found in fossils, the ancient remains of organisms. Creatures alive today share some characteristics with
Every living creature on Earth belongs to a kingdom. Scientists debate how many kingdoms there are, but most agree there are six. Here is how
The body is supported and its internal parts protected by a strong yet flexible framework of BONES called the skeleton. These bones meet at JOINTS, most of which
Rafflesia is the largest flower in the world, weighing around 7 kg, and it can grow more than a meter across! This flower releases chemicals,
(1)एक विशेष कार्य करने वाले समान कोशिकाओं के समूह को क्या कहते हैं? (a)ऊतक (b)अंग (c)अंग तंत्र (d)कोशिकीय संरचना Ans-a (2)‘तंत्रिका ऊतक'(Nervous Tissue) की
(1)मनुष्य में पाचन क्रिया कहां प्रारंभ होती है? (a)मलाशय (b)अमाशय (c)मुख (d)पक्वाशय Ans-c (2)मानव की पाचन नली लगभग कितने फीट लंबी होती है? (a)16
(1) रक्त होता है – (a) एक संयोजी ऊतक (b) एक उपकलित ऊतक (c) a व b दोनों (d) इनमें से कोई नहीं Ans-a [Jharkhand
(1)शरीर का वह कौन सा अंग है जो कभी भी विश्राम नहीं लेता- (a)मांसपेशियां (b)तंत्रिकाएं (c)जीभ (d)ह्रदय Ans-d (2)हृदय और उसकी बीमारियों के अध्ययन
(1)गुर्दे (वृक्क/किडनी) की निस्यंदन इकाई कौन-सी होती है? (a)एक्सॉन (b)नेफ्रॉन (c)न्यूरॉन (d)पीत फाइबर Ans-b (2)‘गुर्दे’ (किडनी) का कार्यात्मक यूनिट क्या है? (a)एक्सॉन (b)नेफ्रॉन (c)न्यूरॉन (d)धमनी
(1)निम्नलिखित में से कौन-सी मानव शरीर की सबसे बड़ी कोशिकाएं हैं? (a)अग्नाशय कोशिकाएं (b)उपकला कोशिकाएं (c)तंत्रिका कोशिकाएं (d)अधिचर्मिक कोशिकाएं Ans-c (2)न्यूरॉन क्या होता है? (a)ऊर्जा
(1)मानव शरीर में कुल कितनी अस्थियां होती है? (a)187 (b)287 (c)206 (d)306 Ans-c (2)कंकाल की मांसपेशियों की अनुमानित संख्या बताइए? (a)206 (b)200 (c)500 (d)700 Ans-d
(1)मानव शरीर में सबसे बड़ी ग्रंथि कौन-सी है? (a)लीवर (b)थायराइड (c)पीयूष (d)लार ग्रंथि Ans-a (2)मानव शरीर की सबसे बड़ी मिश्रित ग्रंथि है- (a)थाइमस (b)यकृत (c)अग्न्याशय
मानव पाचन तंत्र का परिचय पाचन तंत्र जठरांत्र मार्ग (Gastrointestinal tract), यकृत, अग्न्याशय और पित्ताशय से बना होता है। जठरांत्र मार्ग बनाने वाले खोखले अंग:
Stem cells are those that don’t have a specific purpose. A stem cell is a cell in a living body with the potential to develop
What Is The Diplodocus? S.W. Williston discovered the Diplodocus in 1877 and one year later, Othniel Charles Marsh classified the dinosaur and gave it a
X-Chromosomes with DNA carrying the genetic code. What is the difference between immortality and biological immortality? “Immortal means you don’t die at all,” answers Thomas
Darwin spent over twenty years collecting data to prove and develop his theories of evolution, including that of natural selection. How natural selection works can
What do people mean when they say “gender”? One possible answer is that they’re talking about grammar. In some languages, nouns are assigned a gender
The tiger is a hypercarnivore and apex predator. Carnivores can be hyper carnivores, mesocarnivores or hypo carnivores based on how much meat they eat. A
A giraffe, a herbivore, chewing grass. Herbivores depend on plants to survive as it is their only source of energy and are sources of food
Through a microscope, we can see the smallest parts of our world. We can see the cells that make up each living thing. We can see the salt molecules on
👉 Histamine, stimulates the secretion of pepsin. 👉. Histamine is a potent vasodilator . lt contracts the smooth muscles in the bronchi. 👉. Synthetic drugs
✨1. ICBN : International Code for Botanical Nomenclature ✨2. ICZN : International Code of Zoological Nomenclature ✨3. NBRI : National Botanical Research Institute (Lko.) ✨4.
➖The brain of a human being is the central organ of the nervous system. ➖The human brain consists of three parts namely the cerebrum, the
1) Isogamous sexual reproduction in algae- Ulothrix (flagellated) Spirogyra (non-flagellated) 2) Anisogamous sexual reproduction in algae- Udorina 3) Oogamous sexual reproduction in algae- Volvox, Fucus
1. Bacteria & Fungi 👉 Actinomycetes 2. Reptiles & Birds 👉 Archaeopteryx 3. Chordates & Non-chordates 👉 Balanoglossus 4. Cartilaginous & Bony fishes 👉 Chimera
1- Vitamin “A”: Night blindness 2- Vitamin “B1”: Beriberi 3- Vitamin “B2”: Ariboflavinosis 4- Vitamin “B3”: Pellagra 5- Vitamin “B5”: Paresthesia 6- Vitamin “B6”: Anemia
🌟1. Unit of classification : Taxon/category/rank. 🌟2. Unit of Neural system : Neurons 🌟3. Functional unit of kidney : Nephron. 🌟 4. Anatomical unit of
1. Weight of Liver: 1.2 to 1.5 kg 2. Weight of Kidney: 120 to 170 gm 3. Number of lobes in Liver: 2 4. Number
🌟1. Binomial nomenclature was given by Carolus Linnaeus. 🌟2. Two kingdom system of classification was given by Carolus Linnaeus. 🌟3. Systema Naturae was written by
Total views : 224027