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question_answer1) Which part of the brain controls posture and balance of the body?
question_answer2) What is synapse?
question_answer3) Name the sensory receptors found in the nose and on the tongue.
question_answer4) All information for our environment is detected by specialised tips of some nerve cells. Write the name given to such tips and also mention where are they located.
question_answer5) State the function of (a) gustatory receptors and (b) olfactory receptors.
question_answer6) Name two tissues which provide control and coordination in animals.
question_answer7) Name the two components of Central Nervous System (CNS) in humans.
question_answer8) Give some examples of involuntary actions.
question_answer9) Name any two types of tropism.
question_answer10) Why adrenaline is known as emergency hormone?
question_answer11) Name the plant hormones responsible for the following (a) Elongation of cells (b) Growth of stem (c) Promotion of cell division (d) Falling of senescent leaves
question_answer12) Name one plant growth hormone, which retards growth during extremely dry season.
question_answer13) Name the plant hormone that inhibits growth and also helps in wilting of leaves.
question_answer14) What do we call the movement of shoot towards light?
question_answer15) Name the plant hormone responsible for elongation of cells.
question_answer16) Which one is an emergency gland?
question_answer17) Name the hormones secreted by the following endocrine glands. (a) Thyroid gland (b) Parathyroid gland (c) Adrenal gland
question_answer18) Which hormone is responsible for the secondary sexual characters in male human beings?
question_answer19) What term is used for the movement of roots towards gravity?
question_answer20) Which receptor is absent in brain?
question_answer21) Write the function of hormone thyroxin in our body.
question_answer22) Name the hormones responsible for (a) development of moustache and beard in males. (b) controlling the uterus changes in menstrual cycle. (c) increasing blood glucose level. (d) maintaining water and electrolyte balance.
question_answer23) Why pancreas is called as dual function gland? Write the names of hormones released from pancreas.
question_answer24) (a) If the cerebellum is not functioning properly, what activities of our body would get affected? (b) Which part of brain controls involuntary actions?
question_answer25) State the events in sequence that take place when an electrical impulse travels from a dendritic tip of a nerve cell to another nerve cell. or What happens at the synapse between two neurons?
question_answer26) Name the main thinking part of the human brain. List four major functions (other than thinking) of this part.
question_answer27) Differentiate between the movement in plants and animals. (1+1)
question_answer28) The following graph shows the changes expected after a meal containing starch. What inference you draw from the graph?
question_answer29) Explain in brief why hormonal responses are slower than reflex actions?
question_answer30) The hormones of pancreas are antagonistic in nature. How?
question_answer31) 'Brain and spinal cord are two vital organs of our body'. How is our body designed to protect them?
question_answer32) (a) Name the part of brain which controls (i) voluntary action, (ii) involuntary action. (b) What is the significance of the peripheral nervous system? Name the components of this nervous system and distinguish between the origin of the two.
question_answer33) What causes tendril to encircle or coil around the object in contact with it? Explain the process involved. or How do auxins promote the growth of a tendril around a support? Describe in brief.
question_answer34) How does feedback mechanism regulate the hormone secretion?
question_answer35) Identify the labelled the parts (a), (b), (c) and (d).
question_answer36) (a) What is the structural and functional unit of nervous system? Name its any two components. (b) Which structure in a neuron helps to conduct a nerve impulse (i) towards the cell body? (ii) away from the body?
question_answer37) (a) What is reflex arc? (b) How do muscle cells move?
question_answer38) Mr Kapoor has a habit to iron his shirt every morning before going to office. One morning he forgot to keep the hot iron in proper place and left for office. His two years old daughter touched the iron and her hand got burnt. Mrs Kapoor immediately put the hand of her daughter under a running tap as a first aid. On the basis of above passage answer the following questions (a) What other materials commonly cause burn injury? (b) How do we react when we touch a hot object? (c) What value was shown by Mrs Kapoor?
question_answer39) Brain is a very delicate organ. How does the body protect such an organ?
question_answer40) Hormones are needed by our body in an appropriate amount. Slightly more or less secretion causes disorder in our body. Illustrate this by using three examples.
question_answer41) What is endocrine gland? Name any two endocrine gland present in a human body and write hormones secreted by them.
question_answer42) State the sequence of changes that take place in a human body when it prepares to protect itself from a scary to dangerous situation. or Name the hormone which enables the animal body to ready to deal with the situation. Give two responses which are observed as a result of its secretion. or Explain how the human body responds
question_answer43) If iodine is insufficient in one's diet, what might be the deficiency disease?
question_answer44) Which organ secrets a hormone when blood sugar rises in our body? Name the hormone and name one enzyme released by this organ.
question_answer45) (a) Which hormone is responsible for the changes noticed in males at puberty? (b) Deficiency of which hormone leads to dwarfism? (c) Name the hormone which is injected to a diabetic patient.
question_answer46) (a) Identify the endocrine glands A, B, C, D in the given diagram. (b) List the functions of parts D and E.
question_answer47) Complete the following table. S. No. Hormone Location Function (i) _______ Shoot tips Cell elongation (ii) ________ Fruits and seeds ________ (iii) Growth hormone ________ _________ (iv) _________ Adrenal gland Secreted at the time of emergency. (v) Oestrogen ________ _________
question_answer48) Why do we call pituitary gland as the master gland? Where is it located and what are its functions?
question_answer49) 'Plants also perform chemical coordination'. Elaborate.
question_answer50) Some situation in our day to day life require quick response from our body. Illustrate the sentence with the help of suitable diagram and example.
question_answer51) The pharmacist from the nearby pharmacy visit Sonali house every morning. He gives an injection to her grandfather and then proceeds towards his pharmacy. When asked, he told Sonali that her grandfather is suffering from diabetes. Read the above passage and answer the following questions (a) What happens when a person suffers from diabetes? (b) What complications may diabetes cause to Sonali's grandfather? (c) How can the injection given by the pharmacist help Sonali's grandfather? (d) What values are shown by pharmacist? (d) The values shown by the pharmacist are responsibility, caring attitude and humanity. (1)
question_answer52) 1. Few children in a village have complained of swollen necks. More and more children have complained about swollen necks every months. A villager, Ram Singh is superstitious and he thinks that the village is cursed by a 'devil.' Shyam is an another villager, who thinks it as a disease which needs consultation with a doctor. On the basis of above passage answer the following questions (a) Do you agree with Ram Singh? (b) What can be the reason behind swollen necks of the young children in the village? How can the problem be overcome? (c) What social change is required in the village to make it free from blind faith? (d) What values are shown by Shyam?
question_answer53) Anand went to the fruit market along with his father to buy fruits for the function. He saw the fruit dealer putting small quantity of some powder wrapped in a paper in each wooden pack containing unripe mangoes. On enquiry, the fruit dealer told him that the powder is specific chemical which will help the mangoes to ripe early. Saransh was not convinced and he discussed the incidence with his class teacher the next day. On the basis of above passage answer the following questions (a) Name the chemical that fruit dealer had kept in wrapped paper in each box. Is this practice healthy? Give your comments. (b) Name at least one other plant hormone which promotes fruit growth, which promotes the falling of leaves (abscission). (c) What values was shown by Anand?
question_answer54) Give an example of a plant hormone that promotes growth.[NCERT, CBSE (AI) 2008C]
question_answer55) Mention the receptors for light and sound in animals.
question_answer56) Which signals will get disrupted in case of a spinal cord injury? [NCERT]
question_answer57) Which hormone regulates the concentration of sugar in the blood?
question_answer58) Which part of the brain maintains posture and equilibrium of the body? [NCERT]
question_answer59) Define 'reflex action.' [CBSE Delhi 2009]
question_answer60) Name few involuntary actions controlled by the hindbrain.
question_answer61) How do we detect the smell of an agarbatti (incense stick)? [NCERT]
question_answer62) What is an axon?
question_answer63) What are plant hormones? [NCERT, CBSE (AI) 2008C] Why are roots called positively geotropic?
question_answer64) What is the number of cranial nerves and spinal nerves in human beings?
question_answer65) Name the largest cell present in the human body. [CBSE Delhi 2008]
question_answer66) Which part of central nervous system controls reflexes?
question_answer67) Name the part of neuron (a) where information is acquired. (b) through which information travels as an electrical impulse. [CBSE (AI) 2008}
question_answer68) Why is the use of iodized salt advised to us?
question_answer69) Which hormone controls the metabolism of calcium and phosphorus in human beings?
question_answer70) Name the hormone, the secretion of which is responsible for dramatic changes in appearance in girls and boys when they approach 10-12 years of age. [CBSE Delhi 2008C]
question_answer71) Name two tissues that provide control and coordination in multicellular animals. [CBSE Delhi 2009]
question_answer72) Which hormone helps in lowering the level of blood glucose in human beings?
question_answer73) What do you understand by the sleep movement of plant organs?
question_answer74) In the figure below (i), (ii) and (Hi), which appears more accurate and why?
question_answer75) State the main function of abscisic acid in plants.
question_answer76) What is the role of the brain in reflex action?
question_answer77) What are the advantages of the fact that most reflex actions are governed by spinal cord?
question_answer78) Define a synapse.
question_answer79) What is the difference between a reflex action and walking? [NCERT]
question_answer80) What happens at the synapse between two neurons? [NCERT]
question_answer81) What is turgor movement?
question_answer82) How do auxins promote the growth of a tendril around a support? [NCERT]
question_answer83) How does chemical coordination take place in animals? [NCERT]
question_answer84) How do animal muscles move?
question_answer85) Mention the functions of forebrain.
question_answer86) Answer the following: Which hormone is responsible for the changes noticed in females at puberty? (ii) Dwarfism results due to deficiency of which hormone? (iii) Blood sugar level rises due to deficiency of which hormone? (iv) Iodine is necessary for the synthesis of which hormone?
question_answer87) How does our body respond when adrenaline is secreted into the blood?
question_answer88) [NCERT] Why do tendrils coil around hard rough objects?
question_answer89) Why are some diabetes patients treated by giving insulin injections? [NCERT]
question_answer90) Why is pancreas called a 'dual function' gland? Write the names of its hormones.
question_answer91) Name the hormones responsible for regulation of [CBSE Delhi 2007] (i) metabolism of carbohydrates, fats and proteins. (ii) balance of calcium and phosphate. (iii) blood pressure. (iv) water and electrolyte balance.
question_answer92) How does chemical coordination occur in plants? [NCERT]
question_answer93) What is the need for a system of control and coordination in an organism?
question_answer94) [NCERT, CBSE Delhi 2008C] Why Mimosa pudica (touch-me-not) leaves droop down when touched?
question_answer95) How is the movement of leaves of a sensitive plant different from the movement of a shoot towards light?
question_answer96) [NCERT] How is reflex arc formed?
question_answer97) What is feedback mechanism?
question_answer98) Compare and contrast nervous and hormonal mechanism for control and coordination in animals. [NCERT]
question_answer99) What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?
question_answer100) [NCERT] Why are the electrical-chemical signals not an efficient means of communication in plants?
question_answer101) Define 'nerve impulse'. Which structure in a neuron helps to conduct a nerve impulse (i) towards the cell body? (ii) away from the cell body?
question_answer102) Nervous and hormonal system together perform the function of control and coordination in human beings. Justify the statement.
question_answer103) If a ripened fruit is kept in a basket of raw fruits, then what will happen? What causes it?
question_answer104) Label the parts (i), (ii), (iii) and (iv) and show the direction of flow of electrical signals in the figure.
question_answer105) What is cerebrospinal fluid? What is its function?
question_answer106) How are the brain and spinal cord protected?
question_answer107) Name those parts of the flower which serve the same function as the following do in the animals: (i) Tesris (ii) Ovary (iii) Eggs (iv) Sperms In case of animal In case of flower Testis Anther/stamen/androecium Ovary Ovary Eggs Ovules Sperms Pollen grains
question_answer108) Why do stem and root move (grow) towards light and the centre of gravity of the Earth respectively?
question_answer109) What is association neuron?
question_answer110) Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse? :
question_answer111) Sameer was studying in his room. Suddenly he smells something burning and sees smoke in the room. He rushes out of the room immediately. Was Sameer's action voluntary or involuntary? Why?
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