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Unit - 1, Scientific Learning

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 Unit - 1, Scientific Learning Exercise 1. Fill in the blanks with suitable words given below: a. Practical work helps to clarify the learnt principle. b. To prevent probable accidents in laboratories we should follow precautions. c. We should write the report of practical work in a fixed pattern. d. We can demonstrate by constructing different models of science. e. Learning is a continuous process. Tick (√) the correct alternative: a. How does scientific learning process related with an object or event begin? i. by doing practical work ii. by analyzing the objects or events iii. by curiosity raised by seeing the objects or events √ iv. by collecting data related with the objects or events b. Which of following is the practical work done in a laboratory? i. to separate salt crystals from the salt solution √ ii. to identify natural resources by field visit iii. to know the function of parts of a flower by observing them iv. to produce static electricity by rubbing a comb o...
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Unit - 2, Information and Communication Technology

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 Unit - 2 Information and Communication Technology 1. Fill in the blanks with suitable words given below. a. Computer, smartphone, digital camera, etc. are the devices of ICT. b. Internet connects means of information and technology with each other. c. We can search necessary information with the help of browser from the internet. d. The series of instructions is called a computer programme. e. Spreadsheet is used in a computer to prepare charts or graphs. 2. Tick (V) the correct statement and cross out (X) incorrect a. Devices related to computer are used to exchange information all around the world because of the internet. (√) b. Email receiver does not need internet service to read the mail. (X) c. Photo can be made more attractive from photo editing. (√) d. Size of photo can be increased or decreased using MS paint. (√) e. The set of instructions used to operate a computer is called a program. (√) 3. Use tick sign (V) for the correct option. a. What type of software is windows ...
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Unit - 3, Organisms and their Structure

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 Unit - 3, Organisms and their Structure Tick (V) the correct alternative given below. a. In which phylum a snail lies? iv. Mollusca (√) b. Animals of which phylum of the following are found only in ocean? iii. Echinodermata (√) c. Which one is a unicellular animal? iii. Paramecium (√) d. Which of the following is a character of a cylindrical and unsegmented body? ii. Body is covered with cuticle (√) e. Which of the following is a unisexual parasite having a cylindrical and unsegmented body? ii. Ascaris (√) f. Which of the following is the main characteristic of the phylum of prawn? iii. Segmented body (√) 2. Fill in the blanks using the suitable words given below: Tentacles bisexual Annelida Porifera Protozoa | a. The animals having cylindrical and segmented body are kept in the Phylum Annelida. b. Flat animals are Platyhelminthes. c. Sponges are kept in phylum Porifera. d. All the single-celled animals are grouped in Protozoa. 3. Answer the following questions: a. Write th...
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Unit - 4, Biodiversity and Environment

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 Unit - 4 Biodiversity and Environment (3) Answer the Following Questions a. Write the importance of biodiversity: Biodiversity is important because: It supports ecosystem stability and resilience. It provides essential resources like food, medicine, and raw materials. It maintains ecological balance and supports life cycles. It offers aesthetic and cultural value to humans. b. How can we maintain ecosystem balance? To maintain ecosystem balance: Protect wildlife habitats and prevent deforestation. Promote sustainable use of natural resources. Minimize pollution and control the use of harmful chemicals. Encourage biodiversity conservation programs and public awareness. c. What is a wetland? A wetland is a natural or artificial area of land saturated with water, either permanently or seasonally. Wetlands are important ecosystems that support diverse plant and animal life. Examples include swamps, marshes, and bogs. d. Why are water reservoirs important? Water reservoirs are importan...
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Where is more unit solution

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