Revision and Practical file submission
Revise Chapter Life pro cesses and Control and coordination for summative test. Submit your completed practical file for correction and evaluation on Wednesday.
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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 ...
Syllabus for 2nd Unit Test
Chapter Life processes- Respiration, Circulation, Excretion Chapter Control & Coordination- Neuron, Synapse, Types of responses(till Human brain excluding it)