Class 10 -biology-Control and coordination Welcome to your Class 10 -biology-Control and coordinationDuring adverse environmental conditions, plants develop a stress hormone, which is Abscisic acid Ethylene Benzyl amino purine Dichlorophenoxy acetic acid None Which of the following is an incorrect pair?i. Effector organ of somatic reflex- Skeletal musclesii. Receptor organ of somatic reflex- Smooth musclesiii. Effector organ of visceral reflex- Skiniv. Receptor organ of visceral reflex- Epithelial lining of the gut (i) and (iii) (ii) and (iii) All of the above None of the above None Clinostat is the apparatus, which is used to Measure growth of stem. Eliminate the effect of gravity causing geotropism. Identify the chemicals present in stem tip. Measure growth rate. None Column I Column II A. Auxin 1. Flowering B. Cytokinins 2. Phototropism C. Gibberellins 3. Cell division D. Abscisic acid 4. Fruit ripening E. Ethylene 5. Stomatal opening and closingMatch Column I with Column II and select the correct option from the codes given below: A- 2, B- 3, C- 1, D- 5, E- 4 A- 2, B- 3, C- 5, D- 1,E- 4 A- 2, B- 5, C- 3, D- 4,E- 1 A- 5, B- 2, C- 3, D- 1,E- 4 None Mowing of a grass lawn facilitate better maintenance primarily owing to Removal of apical dominance and promotion of lateral meristem Wounding which stimulate rapid regeneration Removal of apical dominance and promotion of intercalary meristems Removal of apical dominance None An infant was having a sound sleep, he suddenly woke up with the noise of the drums outside. Which receptor in the infant is responsible for the detection of the sound? Gustatory receptor Auditory receptor Olfactory receptor None of the above None Which of the following statements are correct?a. Cytokinins suppress the synthesis of chlorophyll.b. Auxins control apical dominance.c. Gibberellins promote shoot elongation.d. Abscisic acid enables the seeds to withstand desiccation. a and b only b and c only a and c only b, c and d only None Match the following:Column IColumn IIA. Hypothalamusp. Reflex actionB. Cerebellumq. BalanceC. Medulla oblongatar. IntelligenceD. Cerebrums. Water balance A- s, B- q, C- p, D- r A- r, B- q, C- p, D- s A- q, B- s, C- p, D- r A- r, B- s, C- p, D- q None Match and choose the correct option. List I List II 1 Human urine a Cytokinin 2 Gibberella fujikuroi b Auxin 3 Herring fish DNA c Ethylene 4 Ripening fruits d Abscisic acid 5 Closing of stomata e Gibberellins 1- b, 2- e, 3- a, 4- c, 5- d 1- b, 2- c, 3- d, 4- e, 5- a 1- a, 2- e, 3- b, 4- d, 5- c 1- c, 2- b, 3- a, 4- e, 5- d None The part of the brain which is involved in interpreting an input, storing input information and initiating a response in the light of similar past experience is: Association area Motor area Pons Cerebellum None A condition of extreme mental and usually motor excitement, hallucinations and marked rapid confusion are the symptoms of Wernicke's disease Delirium tremens Jolliffe's encephalopathy Korsakoff's syndrome None Correct the following statements by replacing the terms underlined (wherever necessary) and select the correct option.(i) The part of human brain which regulates heart beat is called cerebrum.(ii) Chemotropism is directional movement.(iii) The centre for sexual behaviour is situated in medulla oblongata.(iv) The plant hormone named after the fungus causing bakane disease is IAA.(v) Centre for hunger and thirst is located in diencephalon. (i) Hypothalamus (ii) Tropic (iii) Cerebrum (iv) Auxin (v) Diencephalon (i) Medulla oblongata (ii) Directional (iii) Hypothalamus (iv) Gibberellin (v) Diencephalon (i) Hypothalamus (ii) Tropic (iii) Cerebrum (iv) Auxin (v) Metencephalon (i) Medulla oblongata (ii) Directional (iii) Hypothalamus (iv) Gibberellin (v) Metencephalon None Storage sprouting of potato can be prevented by Nissl granules are found in cyton of nerve cells. These have affinity for basic dyes. The granules are made up of Reflex action is Stimulus → → Sensory neuron → → Spinal cord → → Motor neuron → → Response Stimulus → → Motor neuron → → Sensory neuron → → Response Reception → → Motor neuron → → Sensory neuron → → Response Sensory neuron → → Stimulus → → Motor neuron → → Response None Nerve impulse Is carried by afferent and efferent fibres. Is not carried by any afferent or efferent fibres. Is carried away by afferent fibres and brought about by efferent fibres. Is brought by afferent fibres and carried by efferent fibres. None Which is the correct match? Dendrite - Accepts signal / stimulus Dendrite - Sends signal / stimulus Axon - Smallest part of neuron Synaptic knob - Present at the end of dendron None Which of the following are true about the brain?A. The main thinking part of the brain is the hindbrain.B. Centres of hearing, smell, memory, sight, etc., are located in the forebrain.C. Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hindbrain.D. Cerebellum does not control posture and balance of the body. A and B A, B and C B and C D and C None Accidents can happen due to motion of the body.The communication between the central nervous system and the other parts of the body is facilitated by the Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
