Question 11 MarkThe size of the chest cavity increases during inhalation. $(T/F)$ True False AnswerThe size of the chest cavity increases during inhalation. $(T)$View full question & answer→
Question 21 MarkThe fishes have lungs for respiration. $(T/F)$ True False AnswerThe fishes have lungs for respiration. (F)View full question & answer→
Question 31 MarkFrogs breathe through their skins as well as their lungs. $(T/F)$ True False AnswerFrogs breathe through their skins as well as their lungs. (T)View full question & answer→
Question 41 MarkPlants carry out photosynthesis only during the day and respiration only at night. $(T/ F)$ True False AnswerPlants carry out photosynthesis only during the day and respiration only at night. (F)View full question & answer→
Question 51 MarkDuring heavy exercise the breathing rate of a person slows down. $(T/ F)$ True False AnswerDuring heavy exercise the breathing rate of a person slows down. (F)View full question & answer→
Question 61 MarkThe balance between $\mathrm{CO}_2$ and $\mathrm{O}_2$ is maintained by the plants. True/ FalseAnswerTrue.View full question & answer→
Question 71 MarkCell is the smallest structural and functional unit of the body. True/ FalseAnswerTrue.View full question & answer→
Question 81 MarkThe exchange of gases in plants takes place through stomata. True/ FalseAnswerTrue.View full question & answer→
Question 91 MarkThe size of the chest cavity increases during inhalation. True/ False.AnswerTrue.View full question & answer→
Question 101 MarkSpiracle is the muscular sheet which separates the abdomen from the chest cavity. True/ False.AnswerFalse.View full question & answer→
Question 111 MarkFrogs breathe through their skins as well as their lungs. True/ False.AnswerTrue.View full question & answer→
Question 121 MarkGills in fishes are well supplied with blood vessels for exchange of gases. True/ False.AnswerTrue.View full question & answer→
Question 131 MarkInsects have spiracles on the lower surface of the body. True/ FalseAnswerFalse. Explanation: Insects have spiracles on the sides of the body.View full question & answer→
Question 141 Mark During heavy exercise the breathing rate of a person slows down. True/ False. Answer False. View full question & answer→
Question 151 Mark We take deep breathes after we hold on breath for the one minute. True/ False Answer True. View full question & answer→
Question 161 Mark Each bronchus enters the lungs and divides into small tubes bronchioles which end up in air sacs called alveoli. True/ False. Answer True. View full question & answer→
Question 171 Mark The fishes have lungs for respiration. True/ False. Answer False. Explanation: Fishes breathe through gills. View full question & answer→
Question 181 Mark Plants carry out photosynthesis only during the day and respiration only at night. True/ False. Answer False. View full question & answer→
Question 191 Mark Frogs can breathe through their skin as well as lungs. True/ False Answer True. View full question & answer→
Question 201 Mark Living organism respire to get energy from food. True/ False Answer True. View full question & answer→
Question 211 MarkThe size of the chest cavity increases during inhalation. True/ False.AnswerTrue.View full question & answer→
Question 221 MarkPlants respire through leaves and roots. True/ FalseAnswerTrue.View full question & answer→