{"id":63757,"date":"2019-04-19T16:49:45","date_gmt":"2019-04-19T11:19:45","guid":{"rendered":"https:\/\/www.learncbse.in\/?p=63757"},"modified":"2019-04-25T17:21:43","modified_gmt":"2019-04-25T11:51:43","slug":"ncert-exemplar-class-7-science-chapter-7","status":"publish","type":"post","link":"https:\/\/www.learncbse.in\/ncert-exemplar-class-7-science-chapter-7\/","title":{"rendered":"NCERT Exemplar Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate"},"content":{"rendered":"
NCERT Exemplar Class 7 Science Chapter 7 Weather, Climate and Adaptations of Animals to Climate of NCERT Exemplar Class 7 Science<\/a>. Here we have given NCERT Exemplar Class 7 Science Solutions Chapter 7 Weather, Climate and Adaptations of Animals to Climate<\/p>\n Multiple Choice Questions<\/strong><\/p>\n Question 1. Question 2. Question 3. Question 4. Question 5. Question 6. Question 7. Question 8. Question 9. Very Short Answer Type Questions<\/strong><\/p>\n Question 10. Question 11. Question 12. Question 13. Short Answer Type Questions<\/strong><\/p>\n Question 14.NCERT Exemplar Class 7 Science Solutions Chapter 7 Weather, Climate and Adaptations of Animals to Climate<\/h2>\n
\nThe maximum and minimum temperature displayed daily in the weather bulletin refer to the
\n(a) highest day temperature and lowest night temperature of the day.
\n(b) highest day temperature and highest night temperature of the month.
\n(c) temperature recorded at 12 noon and at midnight (00.00 hrs).
\n(d) average highest temperature of day and average lowest temperature of night.
\nSolution:
\nNone of the options is correct. The maximum temperature of the day occurs in the afternoon while the minimum temperature occurs at the time of dawn.<\/p>\n
\nOut of the given definitions, which is the most appropriate definition of climate?
\n(a) Changes in weather conditions in a year
\n(b) Average weather pattern of many years
\n(c) Change in weather pattern in a few years
\n(d) Weather conditions during summer
\nSolution:
\n(b)<\/p>\n
\nWhich of the following briefly describes the desert climate?
\n(a) Hot and humid
\n(b) Dry and humid
\n(c) Hot and dry
\n(d) Hot and wet
\nSolution:
\n(c)<\/p>\n
\nPaheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a variety of animals like monkeys, birds, elephants, snakes, frogs, etc. The most likely location of this sanctuary is in the
\n(a) temperate region
\n(b) tropical region
\n(c) polar region
\n(d) coastal region.
\nSolution:
\n(b)<\/p>\n
\nGiven below are some adaptive features of animals.
\n(i) Layer of fat under the skin
\n(ii) Long, curved and sharp claws
\n(iii) Slippery body
\n(iv) Thick white fur
\nWhich of them are the adaptive features of a polar bear?
\n(a) (i) only
\n(b) (i) and (ii) only
\n(c) (i), (ii) and (iii) only
\n(d) (i), (ii) and (iv)
\nSolution:
\n(d) The body of polar bear is covered with thick white fur which helps the animal to camouflage with the snow. Thick layer of fat insulates the body from cold and long, curved and sharp claws provide good grip and help them to walk on ice.<\/p>\n
\nWhich of the following statements is incorrect for penguins? –
\n(a)They huddle together.
\n(b)They cannot swim.
\n(c)They have webbed feet.
\n(d)They have streamlined body.
\nSolution:
\n(b) Penguins are good swimmers. They have streamlined bodies and webbed feet that help them in swimming.<\/p>\n
\nRead the following environmental conditions of tropical rainforests.
\n(i) Hot and humid climate
\n(ii) Unequal lengths of day and night
\n(iii) Abundant rainfall
\n(iv) Abundant light and moisture
\nIdentify the conditions from the above list that are responsible for the presence of large number of plants and animals in tropical rain forests.
\n(a) (i)and(ii)
\n(b) (i) and (iii)
\n(c) (i), (iii) and (iv)
\n(d) (ii) and (iv)
\nSolution:
\n(c) The tropical regions generally have a hot and humid climate because of its location around the equator. These regions get plenty of rainfall. These climatic conditions are highly suitable for supporting an enormous number and variety of animals. In tropical rainforest areas days and night are almost equal in length throughout the year.<\/p>\n
\nThe coldest region on earth is the
\n(a) polar region
\n(b) tropical region
\n(c) temperate region
\n(d) coastal region.
\nSolution:
\n(a) Polar regions are very cold regions which are covered with snow. In winters the temperature can drop to as low as -37\u00b0C.<\/p>\n
\nChoose the odd one from the following options,
\n(a) Thick layer of fat under the skin
\n(b) White fur
\n(c) Long grasping tail
\n(d) Wide and large feet with sharp claws
\nSolution:
\n(c) Long grasping tail is the adaptive feature of animals living in tropical rain\u00acforest e.g., monkey, whereas thick layer of fat under the skin, white fur and wide and large feet with sharp claws are adaptive features of polar region animals e.g., polar bear. Thick layer of fat under the skin provides insulation against cold. White fur colour helps them to camouflage with the snow and wide and large feet with sharp claws help them to move on ice.<\/p>\n
\n“A Fish dies when taken out of water whereas a wall lizard will die if kept under water.” Mention the term used to describe such abilities that allow fish and lizard to survive in their respective habitats.
\nSolution:
\nAdaptation is the term used to describe such abilities that allow fish and lizard to I survive in their respective habitats. Adaptation is the adjustment shown in the structure or functioning of an organism that make it better suited to its changed environment. Due to lack of certain adaptation a fish dies when taken out of water whereas a wall lizard will die if kept under water.<\/p>\n
\nGive one example of an animal that can live both in water and on land.
\nSolution:
\nFrog<\/p>\n
\nState whether the following statements are True or False. Correct the false statements.
\n(a) It is easy to predict weather rather than
\n(b) Since very few prey are available, polar bear does not need to have strong sense of smell.
\n(c) Penguins stick together to fight the cold polar climate.
\n(d) Tropical rainforests are cool and humid throughout the year because of heavy rains all the time.
\nSolution:
\n(a) False – It is easy to predict the climate rather than weather.
\n(b) False – Polar bear needs to have a strong sense of smell because in polar region very few prey are available so keen sense of smell helps them to catch the prey.
\n(c) True
\n(d) False – Tropical rainforests are hot and humid throughout the year because of heavy rains all the time.<\/p>\n
\nUnscramble the following words using the hints given against them.
\n(i) MATLICE (Hint: weather pattern in a region over a period of time)
\n(ii) AROPL (Hint: coolest region on earth)
\n(iii) TREHMEOMRET (Hint: used to measure temperature)
\n(iv) UHIDYTMI (Hint: feature of weather)
\nSolution:
\n(i) CLIMATE
\n(ii) POLAR
\n(iii) THERMOMETER
\n(iv) HUMIDITY<\/p>\n
\nMatch the animals mentioned in column I with their characteristic features given in column II<\/p>\n