Question

1. List the ways that can show that micro organisms are harmful for plants and animals.
2. How can you preserve Jam and Jellies?​

Answer 1

Answer:

1. THERE AR ONLY SOME MICRO ORGANISM THAT ARE HARMFUL TO PLANTS AND ANIMAL

FOR EXAMPLE. ANY BAD ORGANISMS FALL ON THE PLANT OR ANIMAL IT CAUSE DEATH OFVTHAT LIVING THING

Answer 2

Answer:

1.Disease— causing Microorganisms in Animals

Several microorganisms not only cause diseases in humans and plants, but also in other animals. For example, anthrax is a dangerous human and cattle disease caused by a bacterium. Foot and mouth disease of cattle is caused by a virus.

Disease— causing Microorganisms in Plants

Several microorganisms cause diseases in plants like wheat, rice, potato, sugarcane, orange, apple and others. The diseases reduce the yield of crops.They can be controlled by the use of certain chemicals which kill the microbes.

2.Put the jam into containers and freeze: Pour the jam into clean freezer containers or canning jars, leaving 1/2-inch headspace. (Plastic freezer containers with tight-fitting lids work well for storing freezer jams and jellies.) Cover the containers and let stand for 24 hours, or until the jam has set and become firm.

The essential ingredients for a successful preserve are sugar, acid, and pectin. These three ingredients lower the pH of the preserve and bind available water, thus creating an environment in which the growth of microorganisms is retarded.