Sciencetoon - Function of ethylene hormone :)
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Control And Coordination notes - Endocrine system in Animals , Coordination in plants
Need for Endocrine System/ Chemical communication Chemical communication by hormones is needed because of limitations of electrical communication: (i) Electrical impulses have their limitations because they reach only those cells connected to the nervous tissue. (ii) Also the nerve cells cannot generate & transmit impulses continuously. They need resting time. Chemical communication also has a disadvantage : It is slower communication as compared to electrical communication. ENDOCRINE SYSTEM IN ANIMALS Endocrine System helps in control and coordination through chemical compounds called HORMONES ˜ Hormones : These are the chemical messengers secreted by endocrine glands, in very small amounts, into the blood stream. They act on target tissues/organs usually away from their source. They do not take part in the reaction & are not destroyed immediately. Hormones are secreted by- Endocrine glands S.
Syllabus for 2nd Unit Test
Chapter Life processes- Respiration, Circulation, Excretion Chapter Control & Coordination- Neuron, Synapse, Types of responses(till Human brain excluding it)
Class X- B FA2 Poster making Activity
Year 2016 has been declared as 'International Year of pulses'.. So as a part of Science FA 2 poster making activity, students of class XB have to make posters in pairs. Use A3 size white cartridge sheet and make a poster on any one aspect related to pulses (as listed below) (You may present your topic using drawings, write main points neatly using stencils) Make a border around your poster. Submit your poster on 9th-10th august positively. You may select any of the aspect of pulses... Ex : Nutritional value of pulses, Need to consume pulses, Who all require a protein rich diet?, Diseases caused due to protein deficiency, Unhealthy Food choices( pizzas, burgers, etc) of children these days- lacking in proteins Designing the pulse based protein rich menu for your school canteen. Diseases in which proteins should not be consumed/ consumed in limited amounts, Pulse crops as a natural fertiliser-Role of Rhizobium bacteria, Pulse crops as a