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Ask QuestionPosted by Heena Sheoran 4 years ago
- 4 answers
Yogita Ingle 4 years ago
The smallest bone in the human body is called stapes, located in the middle ear.
Posted by Palak Pandey 4 years ago
- 5 answers
Yogita Ingle 4 years ago
The thigh bone (Femur) is almost 19.9 inches long and is the longest bone in the human body. It runes from the hip down to around the knee area.
Posted by Daljit Rahad 4 years ago
- 3 answers
Yogita Ingle 4 years ago
We sweat more in the summer session. Cotton is a strong water absorber helps to absorb the sweat and introduce to the environment of evaporation. Our body takes out heat as the sweat evaporates from our body. Therefore our body loses heat and is cooled.
Foram Patel 4 years ago
Mehbub Ahmed 4 years ago
Posted by Ashirwad Chauhan 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Simple tissues are of three types namely parenchyma, collenchyma and sclerenchyma.
- Parenchyma – They are living cells and walled, soft in nature due to the presence of thin-walled cells
- Collenchyma – These are characterized by uneven thick-walled living cells.
- Sclerenchyma – They have cells with thickened lignified walls, providing them strength and making them waterproof.
Foram Patel 4 years ago
Posted by Anirudh Nautiyal 4 years ago
- 3 answers
Posted by Sunil Yadav 4 years ago
- 1 answers
Meghna Thapar 3 years, 11 months ago
Water can exist in three different physical states. Water does exist in the form of ice or snow in the solid-state. Water exists as water vapour or steam, in the gaseous state and it exists in the form of water in its liquid state.
The density of ice is less than water. Liquids generally have lower density as compared to solids but ice floats on water. When water freezes to form ice, some empty spaces are created. As a result, volume increases for the same mass of water.
Posted by Udita Singh 4 years ago
- 1 answers
Gaurav Seth 4 years ago
| Osmosis | Diffusion |
| It is limited only to the liquid medium. | Occurs in liquid, gas and even solids. |
| Requires a semipermeable membrane. | Do not require a semipermeable membrane. |
| Depends on the number of solute particles dissolved in the solvent. | Depends on the presence of other particles. |
| Requires water for the movement of particles. | Do not require water for the movement of particles. |
| Only the solvent molecules can diffuse. | Both the molecules of solute and solvent can diffuse. |
| The flow of particles occurs only in one direction. | The flow of particles occurs in all the directions. |
| The entire process can either be stopped or reversed by applying additional pressure on the solution side. | This process can neither be stopped nor reversed. |
Posted by Riya Mangang 4 years ago
- 1 answers
Gaurav Seth 4 years ago
Fiber length and size can vary considerably within a given muscleand between different muscles. Therefore, numbers of nuclei can range from 50-1000 per fiber. For instance in B6 mice an FDB fiber will contain about 30-50 nuclei, while a Soleus fiber can have up to 800.
Posted by Archana Rathod 4 years ago
- 0 answers
Posted by Hyperkillér. Gaming 4 years ago
- 1 answers
Yogita Ingle 4 years ago
Let us assume, the final velocity with which ball will strike the ground be ‘v’ and time it takes to strike the ground be ‘t’.
Given parameters
Initial Velocity of the ball (u) = 0
Distance or height of fall (s) = 20 m
Downward acceleration (a) = 10 m s-2
As we know
2as = v2 – u2
v2 = 2as + u2
v2 = (2 x 10 x 20 ) + 0
v2 = 400
Final velocity of ball (v) = 20 ms-1
t = (v – u)/a
Time taken by the ball to strike (t) = (20 – 0)/10
t = 20/10
t = 2 seconds
The final velocity with which ball will strike the ground is (v) = 20 ms-1
The time it takes to strike the ground (t) = 2 seconds
Posted by Shreya Mittal 4 years ago
- 1 answers
Gaurav Seth 4 years ago
skeletal (striated) muscle - contracts quickly and fatigues quickly, smooth (non striated) muscle - contracts slowly and fatigues slowly, cardiac muscle - doesn't fatigue and works as a single unit due to communication between cells through intercalated discs
Posted by Komal Tank 4 years ago
- 1 answers
Yogita Ingle 4 years ago
Plants and animals are different kinds of organisms; hence, they require different types of tissues to carry out their bodily functions.
Plants are autotrophic and stationary, whereas animals have to move from one place to another in search of food, mate, and shelter. Plant tissues are suited for the stationary habit of plants, whereas tissue organisation in animals is targeted at providing higher mobility.
Posted by Isha Rajput 4 years ago
- 3 answers
Yogita Ingle 4 years ago
Plasma membrane is composed of organic molecules like lipids and proteins.
Posted by Himanshi Mehran 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Bases may either be soluble or insoluble in water. Therefore, all alkalis are bases because they will all neutralize acids, but not all bases are alkalis because not all bases will dissolve in water. An example of an alkali is sodium hydroxide.
Posted by Jagjeet Kaur 4 years ago
- 3 answers
Rooh Choudhary 4 years ago
Tejas Agalve 4 years ago
Ananya K 4 years ago
Posted by Jay Kushwaha 4 years ago
- 2 answers
Yogita Ingle 4 years ago
The other name of cotyledon is seed leaf or ‘embryonic leaf’.
- Embryonic leaf is a distinct part within the embryo of seed-bearing plants. These are the first leaves that grow during germination.
- These are flattened blade-like leaves which are attached to a thin stem. They perform photosynthesis and transpiration in the germinating seedlings.
- The number of ‘cotyledons’ is used by botanists to distinguish a plant as monocotyledonous (for single cotyledon) and dicotyledonous (for two cotyledons).
Posted by Jay Kushwaha 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Shark is an example of fishes which are made up of both bone and cartilage. E
Posted by Rushil Singh 4 years ago
- 1 answers
Angshuman Talukdar 4 years ago
Posted by Anushka Londhe 4 years ago
- 1 answers
Yogita Ingle 4 years ago
According to the scientists, the natural state of bodies is the state of rest. Galileo opposed this concept after his observations.
He observed that when a ball was made to roll down an inclined plane, its speed increased. Similarly if it was made to roll up the inclined plane, its speed decreased. Galileo repeated this experiment by making the surface very smooth. He observed that the ball continued to move for a longer time.
Posted by Kushagra Sharma 4 years ago
- 5 answers
Ananya K 4 years ago
Sajal Goel 4 years ago
Posted by Rudransh. Maurya 4 years ago
- 4 answers
Tejas Agalve 4 years ago
Yogita Ingle 4 years ago
Chromatography is the technique used for separation of those solutes that dissolve in the same solvent.
Applications of Chromatography
To separate
• colours in a dye
• pigments from natural colours
• drugs from blood.
Abhijeet Pandey 4 years ago
Abhijeet Pandey 4 years ago
Posted by Kushagra Trivedi 4 years ago
- 2 answers
Ananya K 4 years ago
Yogita Ingle 4 years ago
Plants are one of the most essential living organisms on earth. They are immensely beneficial to both animals and human beings. They produce oxygen which is crucial for the survival of living organisms. Trees provide shelter to animals and are also known for their medicinal benefits. Overall, different parts of plants have different roles to perform. They act as a source of food and oxygen and maintain the ecological balance.
Posted by Rooh Choudhary 4 years ago
- 5 answers
Ananya K 4 years ago
Posted by Bhagyalaxmi Patil 4 years ago
- 5 answers
Sathana S 4 years ago
Rooh Choudhary 4 years ago
Ananya K 4 years ago
Posted by Riya Saini 4 years ago
- 1 answers
Riya Saini 4 years ago
(i) Water cannot be separated into its constituents hydrogen and oxygen by physical methods.
(ii) Properties of water are entirely different from its constituents hydrogen and and oxygen. Hydrogen is combustible while oxygen supports combustion. Water is quite different from the two and it extinguishes fire.
(iii) Heat and light are given out when water is formed by burning hydrogen and oxygen.
(iv) The composition of water is fixed. Its constituents hydrogen and oxygen are present in the ratio of 1 : 8 by mass.
(v) Water has a fixed boiling point of(or 373 K) under atmospheric pressure of one atmosphere (or 760 mm).
Posted by Samyak Darshan Thakur Samyak 4 years ago
- 2 answers
Yogita Ingle 4 years ago
Grana - A series of stacked thylakoid disks, found in the inner membrane of chloroplasts. Grana are connected by intergranal lamellae.
Grana function in the light reactions of photosynthesis. The grana of chloroplast consists of pigment system made upof chlorophyll-a, chlorophyll-b, carotine and xanthophyll.
Student 10Th 4 years ago
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