10. Will force of friction come into existence when a rain drop rolls down a glass window plane?
11. Which microorganism’ causes foot and mouth disease in cattle?
12. What is meant by food poisoning?
OR
How are viruses different from other organisms?
13. What type of fertilization takes place in i) Dog and ii) Frog
Answers
Answer:
10. Yes, there will be friction between a rain drop and glass window plane. But as the window surface is smooth the frictional force is not so strong to hold the rain drop on window surface and thus rain drop rolls down.
11. FMD is caused by an Aphthovirus of the family Picornaviridae, seven strains (A, O, C, SAT1, SAT2, SAT3, and Asia1) are endemic in different countries worldwide. Each strain requires a specific vaccine to provide immunity to a vaccinated animal.
12. Food poisoning, also called foodborne illness, is illness caused by eating contaminated food. Infectious organisms — including bacteria, viruses and parasites — or their toxins are the most common causes of food poisoning.
OR
Most notably, viruses differ from living organisms in that they cannot generate ATP. Viruses also do not possess the necessary machinery for translation, as mentioned above. They do not possess ribosomes and cannot independently form proteins from molecules of messenger RNA.
13. (i) Internal fertilization is when the eggs are kept within the reproductive tract of the female, but when a the males sperm is inserted the egg gets fertilized inside the female. This occurs most often in land-based animals. Examples include worms, cats, dogs, birds, mammals, squid, arthropods, sharks and reptiles.
(ii) fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them