Class5ScienceGuide

My Science, Health and Physical Education Guide Part 1 - Science Lesson 5 - Life Processes of Animals and Plants 1. Fill in the blanks with correct words. Answer 👉  a. Animals get energy from food. b. Plants inhale oxygen gas in respiration. c. Plants take in carbon dioxide gas in photosynthesis. d. Animals and plants help to maintain balance between oxygen and carbon dioxide gas in atmosphere. 2. Make corrections if the following statements are false. Answer 👉  a. False. Plants need water, air, and nutrients from the soil for their growth. b. False. Many animals depend on plants for their living, either directly as herbivores or indirectly as carnivores that eat other animals that have fed on plants. c. False. Not all plants prepare their food by themselves. Some parasitic plants obtain nutrients from other plants, while some non-green plants are unable to produce their own food and rely on other sources of nutrition. d. False. Plants absorb water throug...

My Science, Health and Physical Education Guide Part 1 - Science Lesson 1 - Different Kinds of Animals Exercise 1. Classify the following animals into two groups: ‘animals with backbone’ and ‘animals without backbone’. Answer 👉  Animals with a backbone: Fish Snake Frog Bat Horse Shark Bear Whale Animals without a backbone: Earthworm Spongila Butterfly Snail Leech Hawk Duck Starfish 2. Write two examples of animals of each of the following category. water animals, amphibia, land animals, aves. Answer 👉  Water animals: Dolphin Octopus Amphibians: Frog Salamander Land animals: Lion Kangaroo Aves (Birds): Eagle Penguin 3. Nepalese notes have pictures of different animals. Find what animals are on those notes and also write the categories of those animals. Answer 👉  Nepalese notes have pictures of the following animals: 1 Rupee not e - picture of the Himalayan Monal, a colorful bird found in the Himalayas. Category: Aves (Birds) 2 Rupee note - pictur...

My Science, Health and Physical Education Guide Part 1 - Science Lesson 6 - Effects of Human Activities on Environment 1 Put a tick (√) if the statements are correct and a cross (×) if they are wrong. Answer 👉  a. Polluted air is injurious to health. (√) b. Humans have no role in air pollution. (×) c. Drainage channels should not be mixed in river and ponds. (√) d. Population growth is the main reason of deforestation. (×) e. Terrace farming does not cause erosion. (×) 2. Fill in the blanks with correct words. Answer 👉  a. We should not use water purifying tablets more than required. b. Air gets polluted from exhaust fumes and emissions of the moving vehicle. c. Water gets contaminated from the mixing of water with chemicals from factories into the rivers. d. We should only carry out terrace farming on the sloppy land. 3. Answer the following questions in short. a. What activities of humans cause air pollution? Answer 👉 Activities of humans that cau...

My Science, Health and Physical Education Guide Part 1 - Science Lesson 2 - Cell 1. Tick the (√) true and cross (×) the false statements. a. All the cells do not have similar shape. b. Animal cells have cell wall. c. Vacuole is big and permanent in plant cell. d. Nucleus controls the activities of a cell Answer 👉  a. × (Most cells have similar shape, although there are some exceptions such as nerve cells and muscle cells.) b. × (Animal cells do not have cell walls, but they do have a cell membrane.) c. √ (Vacuole is usually large and permanent in plant cells.) d. √ (The nucleus is the control center of a cell.) 2. Match the following. Answer 👉  a. Vacuole (empty space) b. Chlorophyll (green colour pigment) c. Nucleus (controls the cell activities) d. Cytoplasm (flexible jelly) e. Cell membrane (controls the cell activities) 3. Answer the following questions. a. What is the smallest unit of body of living things? Answer 👉  The smallest unit of ...

 My Science, Health and Physical Education Guide Part 1 - Science Lesson 7 - Environment Conservation 1 Put a tick (√) if the statements is correct and a cross (×) if it is wrong. Answer 👉  a. √ Trees are to be planted to decrease the pollution caused by smoke and dust. b. √ Rivers are to be let flow freely without making embankments. c. √ Forest fire destroys wildlife and plants. d. × Farming is to be done in sloppy land as it is. (Farming should be done in a way that minimizes soil erosion and other environmental impacts.) e. √ Unplanned urbanization increases environmental pollution. 2. Answer the following questions in brief. a. What can be done to protect air from being polluted? Write any two measures. Answer 👉 Two measures to protect air from being polluted are: Reducing vehicular emissions by promoting public transport and using electric vehicles, Controlling industrial emissions by using cleaner production techniques and enforcing strict regulat...

My Science, Health and Physical Education Guide Part 1 - Science Lesson 3 - Lifecycle of a Butterfly 2. Fill in the blanks with correct words. Answer 👉  a. Larva (caterpillar) is voracious stage of the lifecycle of a butterfly. b. The shell that covers pupa is called puparium or cocoon. c. There are four stages in the lifecycle of a butterfly. 3. Answer the following questions. a. What is lifecycle? Answer 👉 Lifecycle refers to the stages of growth and development that an organism goes through from birth to death. b. Write names of any three insects which have four stages in their lifecycle. Answer 👉 Some examples of insects that have four stages in their lifecycle are bees, mosquitoes, and flies. c. Briefly explain the lifecycle of a butterfly Answer 👉 The lifecycle of a butterfly consists of four stages. First, the female butterfly lays eggs on the under surface of leaves. The eggs hatch into larvae or caterpillars in a few days. The caterp...