Doubtly
@Doubtly · Joined Feb 2021
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- short note Embryology. Comparative study of embryonic developmental stages of various vertebrates show extreme similarities during initial stages and those similar... 1
- short note Darwin’s theory of natural selection. Darwin's theory of natural selection states that organisms with favourable variations survive and reproduce more, and over generations this... 1
- Short note on Lamarckism 1=Jean-baptiste lamarck proposed that morphological changes occurring in theorganisms are responsible for evolution 2=The reasons behind tho... 2
- Complete the statements by choosing correct options from bracket. (Gene, Mutation, Translocation, Transcription, Gradual development, Appendix) a. Mutation; b. Gene; c. Transcription; d. Gradual development; e. Appendix a. The cause of sudden changes was understood due to the mutatio... 1
- Read the following statements and justify the same in your own words with the help of suitable examples. a. Human evolutio All four statements describe evolution: a. humans evolved gradually over crores of years; b. isolation leads to new species; c. fossils are... 1
- Complete the following diagram. Morphological Similarities in bones structure Evidences of Evolution Evidences of evolution: morphological evidences, anatomical evidences (similarities in bone structure), vestigial organs, palaeontological e... 1
- Form a group of students from your school to demonstrate the mock drill and demonstrate it in the school.
- Demonstrate the activities shown on page no. 106 of std. IX textbook in front of the students of other classes. Make a video clip and send it to others
- Following are the pictures of some disasters. How will be your pre- and post-disaster management in case you face any of those disasters?
- Complete the following chart. Properties of Predisaster management Properties (features) of pre-disaster management: Planning: studying the disasters likely in an area and preparing a disaster management pla... 1
- Explain that why is it said like that? A] Mock drill is useful B] Effective disaster management makes us well prepared for future. A] Mock drill is useful because it trains people to act correctly in a real disaster. B] Effective disaster management makes us well prepare... 1
- Some symbols are given below. Explain those symbols. Which disasters may occur if those symbols are ignored?
- Identify the type of disaster. a. Terrorism b. Soil erosion c. Hepatitis d. Forest fire e. Famine f. Theft a. Terrorism: man-made; b. Soil erosion: natural; c. Hepatitis: natural (epidemic); d. Forest fire: natural; e. Famine: natural; f. Theft: m... 1
- Which different aspects of disaster management would you check for your school? Why? I would check the safety of the school building, the exits, fire safety, first aid and the preparedness of people, because these decide how... 1
- Write down the reasons, effects and remedial measures taken for any two disasters experienced by you. Two disasters commonly experienced in Maharashtra are floods and fire. Their causes, effects and remedial measures are: 1. Flood Reasons: he... 1
- On the basis of the structure of disastermanagement authority, form the same for your school. A school disaster management committee can be formed on the same pattern as the district authority, with the principal as its head and separ... 1
- Which different methods are used for transportation of patients? Why? Injured people are moved by one-person methods, two-person methods or a stretcher, chosen according to the injury and the number of helpers,... 1
- Why is it essential to get the training of first aid? Training in first aid is essential because the right help given in the first few minutes after an accident or disaster can save a life. In a... 1