Changes in our surrounding that makes us respond to them are called stimuli. The changes in the environmental conditions to which the organisms... View Article
False Evaporation of water may take place in absence of sunlight. During the daytime, all the air surrounding us gets heated. This warm air... View Article
The stomach releases hydrochloric acid and digestive juices which act on food. Gastric juice is made up of digestive enzymes, hydrochloric... View Article
Protected forests are not completely safe for wild animals because people who live near or adjacent to forests use resources from forests to... View Article
True The direction of magnetic lines of force of a bar magnet is from north to south pole outside the magnet and from south pole to north pole... View Article
False Some amount of water vapour is always present in the air in all seasons. Evaporation takes place from all open surfaces of water. As a... View Article
We can look for two stars at one end of the Ursa Major constellation that appears like a quadrilateral. Imagine a straight line passing through... View Article
In olden days , sailors used to find direction by suspending a piece of bar magnet. A freely suspended magnet always comes to rest in the... View Article
False Thermocol is a bad conductor of electricity. Hence, electric current cannot pass through it. Conductors conduct electrical current very... View Article
Because the size of pace or footstep of different people are different, so the lengths measured by two different persons using their footsteps... View Article
Answer: Pollination is the sexual method of reproducing in all plants by the process of transferring the pollen grains from the anther to the... View Article
False Since sugar is soluble in tea , it cannot be separated by filtration . Filtration works best when the solute isn't dissolved in the... View Article
The blood from the heart is transported to all parts of the body by the arteries. A network of arteries and veins also carry blood throughout... View Article
Cuscuta (Amarbel) is an example of (ii) parasite. Cuscutas are plant parasites that connect to the vasculature of their host plants to extract... View Article
The harmful gases, like sulphur dioxide and nitrogen dioxide, react with the water vapour present in the atmosphere to form sulphuric acid and... View Article
The habitats of plants and animals that live in water are called an aquatic habitat. A habitat is an area where an organism lives. An organism... View Article
False. Filtration is used for the separation of solid components of the mixture from the liquid. But here both the components are liquids.Milk... View Article
