Question

1. Why is photosynthesis essential for the survival of
living organisms?
2. List the different modes of heterotrophic nutrition
in plants.
3. How do the saprophytes feed on the rotten material?
4. Differentiate between parasitic and symbiotic
relationships. Give examples.
5. Why do insectivorous plants feed on insects if
they are autotrophs?
6. How do parasitic plants derive their nutrition?​

Answer 1

photosynthesis is the process by which plants prepare their own food is called photosynthesis.

we depend on plants for our survival and as well as to fulfill our need of oxygen . If photosynthesis process not carried out by plant then plant's may died and If plant's get died then human being will also affect adversely due to this .

Hence The photosynthesis is essential for the survival of living organism .

Answer 2

Answer:

ans..1

Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. Without photosynthesis, the carbon cycle could not occur, oxygen-requiring life would not survive and plants would die. ... The importance of photosynthesis in our life is the oxygen it produces.

ans 2

Heterotrophic nutrition can be one of three types – holozoic, saprophytic or parasitic.

ans 3

They obtain nutrients from dead and decaying matter. The saprophytes secrete digestive juices on dead and decaying matter and convert it into a solution. They then absorb the nutrients from it. In this way, they digest their own food and derive nutrients from it

ans 4.

Symbiosis is a close relationship between two species in which at least one species benefits. Mutualism is a symbiotic relationship in which both species benefit.

In a symbiotic relationship, the organisms are mutually benefited. No organisms are hurt. Example algae and fungi.

Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed. A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host.

A few examples of parasites are tapeworms, fleas, and barnacles. Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans