Nutrition in Plants And Animals Test - 4

Stems are modified to carry out photosynthesis in desert plants. The stems of desert plants contain chlorophyll and thus carry out photosynthesis.

Plants require nitrogen to make proteins. Nitrogen is usually taken by plants from soil, but some plants fulfill this requirement from insects. These plants are called carnivorous plants.

As A is slimy, filamentous, green and resides in ponds, therefore it is an alga, and thus, it can be concluded that A makes its own food. C is filamentous, non photosynthetic and often associated with food spoilage, thus C is a fungus, which grows on dead and decaying matter.

Chlorophyll is a green pigment, sun is the ultimate source of energy, oxygen is given out in photosynthesis, and iodine is used to detect starch.

Contaminated water and food are the modes of infection of cholera.

During diarrhoea, there is an excessive loss of water from the body along with salts and sugar. For this, WHO recommends a home-made solution of water with dissolved salt and sugar, known as oral rehydration solution (ORS).

Molars are the large grinding teeth at back. The last molars in the line are called 3^rd molars or more popularly 'wisdom teeth'. These teeth usually erupt and break through the gum tissue after the age of 17. Some will only partially erupt, while the others will stay completely buried under the tissue.

The food absorbed by blood needs to be transported to each and every organ of the body in order to be used to build the complex substances required by the body. This process is known as assimilation.

The working of stomach was an accidental discovery by an American army doctor, William Beaumont, when he saved a man named Alexis St. Martin, who was badly wounded by a shotgun.