1 MARKS QUESTIONS [These material are related to biology notes class 10 cbse life processes , life processes class 10 pdf , life processes class 10 extra questions , class 10 science chapter 6 life processes life processes class 10th , ppt on life process for class 10 , life processes questions , mcq class 10 biology life processes] 1. A farmer floods his field everyday thinking that watering in this manner will result a better yield of his wheat crop. What will be the result of this action of the farmer. Ans.This will result in water logging of the soil due to which roots cannot breathe and ultimately plants will die . 2. Name the term for transport of food from leaves to other parts of plants. Ans.Translocation 3. Which pancreatic enzyme is effective in digesting proteins? Ans.Trypsin 4. Which enzyme is present in saliva breaks down starch? Ans.Salivary amylase. 5. After a vigorous exercise you may experience cramps in your leg muscles. Why does this happen? Ans.Accumulation of lactic acid. 6. Name the organelle in which photosynthesis occurs. Ans.Chloroplast. 7. Name the type of blood vessels which carry blood from organs to the heart. Ans.Veins. 8. Name the respiratory structures of i.Mosquito ii)earth worm. Ans.(i) mosquito—System of air tubes. (ii)earth worm—moist skin. 9. Write the two functions of kidneys. Ans.Osmoregulation and excretion. 10. What are spiracles. Ans The holes found on the lateral side of insect‘s body. 2 MARKS QUESTIONS X Biology Study notes extra questions for Chapter Life Process Download Chapter 6 Life Processes Study Notes Download Life Process Solved question Download Life Process CBSE Guess Paper Download Life Process CBSE Test Paper -1 Download Life Process CBSE Test Paper -2 Download Life Process CBSE Test Paper -3 Download L Life Process CBSE Test Paper -4 Download Life Process CBSE Test Paper -5 Download Searches related to life process notes for class 10 Biology class 10 life processes notes biology notes class 10 cbse life processes life processes notes class 10 pdf life processes class 10 ncert notes life processes class 10 ppt Life processes class 10 extra questions life processes class 10 mcq life processes class 10 ncert solutions
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Class 10 Heredity and Evolution Solved Test paper-4
Download File Class 10 Heredity and Evolution Solved Test paper-5 Download File Class 10 Heredity and Evolution Solved Test paper-6 Download File Download rest papers Solved Test paper 1. All information for our environment is detected by specialised tips of some nerve cells. Mention the name given to such tips and also mention where are they located
Ans. Such tips are called receptors. They are located in sense organs 2. Name the sensory receptors found in the nose and on the tongue ? Ans. Olfactory receptors and gustatory receptors. 3. Name the part of the brain which controls posture and balance of the body. Ans. Cerebellum. 4. Give one example of chemotropism. Ans. The growth of pollen tube towards ovule. 5. Name the two components of central nervous systems in humans. Ans. Brain and Spinal Cord. 6. Name the largest cell present in human body. Ans. Neuron. 7. How do the shoot and roots of a plant respond to the pull of earth s gravity? Ans. Roots grow downward towards gravity while shoot usually grows upwards and away from earth. 8. Give reason to explain why endocrine glands release their secretions into the blood directly. Ans. Hormones are secreted by endocrine glands. These glands do not have ducts to carry these hormones, so they are released directly in the blood stream that carries them to target organ. 9. What is synapse ? Ans. The junction between neurons is called synapse. 10. A boy runs on seeing a stray dog. His breathing becomes very fast and blood pressure also increases. Name the hormone found to be high in his blood and the gland which produces it. Ans. Adrenaline, Adrenal gland. 11. What is meant by Tropic movements ? Ans. Plant growth movements in response to stimuli from a particular direction are called tropic movements. 12. While watering a rose plant, a thorn pricked Rita s hand. How would she respond to this situation Provide the term for such type of response? Ans. She will withdraw her hand immediately. The name of the response is Reflex action. 13. Name the part of the neuron where information is acquired. Ans. Dendrite. 14. Name the part of neuron through which the information travels as an electric impulse. Ans. Axon. 15. Name the mechanism by which amount of hormone in the blood is regulated. Ans. Feedback mechanism. 16. Name two tissues which provide control and co-ordination in animals. Ans. Nervous and muscular tissues. 17. Name the diseases by which a person is likely to suffer due to the deficiency of (a) Iodine (b) Insulin Ans. (a) Goitre (b) Diabetes Short Answer Type Questions (2/3 marks each) Q. 1. State the role of brain in reflex action. Ans. The sensory area of brain receives information, interprets it and makes a rapid decision in the form of electrical impulses and sends it to receptor organ. 2. How does our body maintain blood sugar level? Ans. If sugar levels in blood rises, cells of pancreas detect and secrete more insulin which leads to fall off sugar level. 3. What happens at the synapse between two neurons? Ans. When an electrical signal reaches the axonal end of one neuron it releases chemical substances called Neurotransmitter that cross the synapse and move towards the dendrite end of next neuron generating another electrical signal. 4. Name the hormone responsible for the regulation of (i) metabolism of carbohydrates, fats and proteins, (ii) balance of calcium and phosphate, (iii) blood pressure, (iv) water and electrolyte balance. Ans. (i) Thyroxine (ii) Parathormone (iii) Adrenaline (iv) Vasopressin or ADH (Antidiuretic hormone) 5. Write the name and functions of any two parts of brain. Ans. The brain has three main parts. They are fore brain, mid brain and hind brain. i) Fore brain: - It consists of the cerebrum and olfactory lobes. It is the thinking part of the brain and controls voluntary actions. It controls mental activities like thinking, learning, memory, emotions etc(cerebrum). and touch, smell, hearing, taste, sight(olfactory lobes). ii) Mid brain :- It connects Fore brain and Hind brain. it controls involuntary actions and reflex movements of head, neck, eyes and ear etc. iii) Hind brain :- it connects the Fore brain & Hind brain . it consists of cerebellum, pons and medulla. Cerebellum :- controls body muscular movements , balance and posture Pons :- it acts as a bridge between brain & spinal cord and controls respiration. Medulla: - it controls involuntary action like heart beat, blood pressure, swallowing, coughing, sneezing, vomiting etc. d) Spinal cord: - The spinal cord starts from the brain and extends through the vertebral column. It has 31 pairs of spinal nerves. It carries messages to and from the brain. It also controls reflex actions. Cylindrical or tubular structure extending downwards from the Medulla oblongata. 6. Explain with the help of an example how the timing and amount of hormone released are regulated? Ans. The timing and amount of hormone released are regulated by feedback mechanisms. For e.g. when there is rise in sugar level in blood, insulin secreted by pancreas. If sugar lavel in blood fall , insulin secretion is reduced. 7. (a) Which structures protect the spinal cord and brain ? (b) Write an activity to show phototropism and geotropism. (c) What type of movement is shown by mimosa plant leaves when touched with a finger? Control and co ordination solved Board questions full Download File Control and Coordination solved CBSE Test paper-01
Control and Coordination solved CBSE Test paper-02 Control and Coordination solved CBSE Test paper-03 class10 Control and coordination solved Test Paper-4 class10 Control and coordination solved Test Paper-5 class10 Control and coordination solved Test Paper-6 class10 Control and coordination solved Test Paper-7 Download Files A must before exam to get A++ 1. Name the term for transport of food from leaves to other parts of plants.
Ans.Translocation 2. Which pancreatic enzyme is effective in digesting proteins? Ans.Trypsin 3. Which enzyme is present in saliva breaks down starch? Ans.Salivary amylase. 4. Name the organelle in which photosynthesis occurs. Ans.Chloroplast. 5. Differentiate autotrophs and heterotrophs. Ans.The organism which prepare their own food are called autotrophs for eg: green plants . The organisms which depend on the food prepared by other organisms are called heterotrophs for eg: animals 6. Differentiate between Holozoic nutrition and saprophytic nutrition. Ans: Holozoic nutrition In this nutrition organisms derive their food by consuming complex organic materials by the process of ingestion and then converting the complex molecules into simpler ones to obtain nutrients. Eg. animals and human beings. Saprophytic nutrition In this type of nutrition organism derive their food from the dead and decaying materials. Eg.fungi 7. (a) How is fat digested in our body? ( b) Where does this takes place? Ans. (a) fats are emulsified by bile salts. The emulsified fats are acted upon by pancreatic and intestinal lipase to form fatty acids and glycerol. ( b)digestion of fats occurs in small intestine. 8. What is the function of epiglottis in man? Ans: Epiglottis is a triangular shaped flap of cartilage present at the glottis. It prevents the food from entering the windpipe while swallowing 9. When we breathe out, why does the air passage not collapse ? 2014 Ans: Trachea does not collapse because there are rings of muscles around our trachea and are called cartilage which prevents it from collapsing. 10. Herbivores have longer small intestine while carnivores have shorter small intestine. Give reason. 2014 Ans: Herbivores eats grass which contains a lot of cellulose and to digest this cellulose small intestine is longer in them whereas in case of carnivores small intestine is shorter because they eat meat which can be digested easily. 11. Plants absorb water from the soil. Explain how does the water reach the tree top? 2014 Ans: The solution of mineral and water that move from root to leaves is called Sap. The two forces push and pull help to pump up the sap. The absorption of water by root produces a push. Force of pull is produced by transpiration in which plant loose water through the stomata in leaves |
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