Q31. Explain in brief the process of binary fission in amoeba.
Q32. What are the methods to control noise pollution?
Q33. Suggest three measures to protect ourselves from lightning
Q34. List the characteristics of an image formed in a plane mirror.
Q35. What are the harmful effects of global warming?
Answers
Answer:
(31). Amoeba is a unicellular organism, and just like bacteria, it reproduces through binary fission. After replicating its genetic material through mitotic division, the cell divides into two equal-sized daughter cells. In this method, two similar individuals are produced from a single parent cell.
(32.)We can Reduce Noise pollution by turning off appliances when not in use, use of earplugs, lowering the volume, planting more trees, regular maintenance of vehicles and machines etc. By controlling noise we can control negative health effects that noise pollution has on everyone.
33).Protective measures against lightning are:→ Stay indoor or under covered area. → Do not take bath during lightning. → Do not use any electrical appliances during lightning.
34)The image obtained is virtual.
- .The image is laterally inverted
- The image is erect.
- The size of the image is the same as the size of the object.
- The distance between the image obtained is the same as the distance between the object from the mirror.
35).Harmful impacts include Rise in overall global temperature, threat to aquatic life, flooding, desertification due to scanty rainfall, and loss of habitation.