Question

What is nutrition in plants? What are various modes of nutrition?

Answer 1

Nutrition:

1. The process in which an organism consumes food and utilizes it to produce food is referred to as nutrition.
2. Food nutrients are required by living creatures to create and develop their bodies, hence nutrition is critical.
3. Nutrition aids in the repair of damaged tissues and organs.
4. It also provides the energy needed to carry out various tasks.
5. Food has to be obtained from other animals or plants.

Nutrition in plants:

1. Plants absorb basic ingredients from their natural surroundings, such as minerals, CO2 (carbon dioxide), sunshine, and water, to grow their food.
2. There are two basic modes of nutrition, that is autotrophic and heterotrophic.
3. Plants derive their nutrition from the substances in nature and prepare their food, hence, the
4. mode of nutrition in plants is autotrophic.

i) Autotrophic mode of nutrition:

1. Autotrophs are organisms that are capable of making their own sustenance.
2. Plants are an example of autotrophs since they make their own food using carbon dioxide, water, and light energy.

ii) Heterotrophic mode of nutrition:

1. All organisms are unable to produce their own sustenance from inorganic materials such as carbon dioxide and water.
2. For nourishment, they rely on other creatures.
3. Such a type of nutrition is called heterotrophic nutrition.
4. Heterotrophs are creatures that rely on other species for nutrition.
5. All animals and other non-green plants are saprophytes.
6. Plants or other creatures provide them with nourishment. of nutrition.

There are three different modes of nutrition that comes under the heterotrophic mode of nutrition, which is;

ii-a) Saprophytic mode of nutrition:

1. Organisms that feed on the dead and decaying matter to obtain their nutrition is called saprophytes.
2. Fungi and many bacteria are saprophytes.

ii-b) Parasitic mode of nutrition:

1. It is a mode of feeding in which organisms feed on other live species, known as hosts, without destroying them.
2. Parasites are creatures that receive nourishment in this manner.
3. Most often, they reside in the body of the host and derive nutrition.
4. Such organisms cause diseases in hosts.
5. For example, plasmodium, and other bacteria.

ii-c) Holozoic mode of nutrition:

1. Organisms in this mode of nutrition receive nutrition by consuming solid food.
2. The food might be either plant-based or animal-based.
3. The solid food is ingested into the body, digested, and absorbed within cells.
4. The unabsorbed food material then is expelled from the body.
5. Amoeba is the best example.