Name: Conservation of Forest and Wildlife in India
Uploaded: 2019-07-19
Duration: 5 min
Description: Let's explore the need for forest and wildlife conservation, the benefits it has on biodiversity, and the impact of the Indian Wildlife Protection Act of 1972.

Question

Give an account of various types of parasitism with examples.

Accepted Answer

Parasitism is an interaction between two different species in which the smaller partner (parasite) obtains food from the larger partner (host or plant). So the parasitic species is benefited while the host species is harmed.

Based on the host-parasite relationship, parasitism is classified into two types they are holoparasite and hemiparasite.

1.Holoparasites- The organisms which are dependent upon the host plants for their entire nutrition are called Holoparasites. They are also called total parasites.

Cuscuta is a total stem parasite of the host plant Acacia, Duranta and many other plants. Cuscuta even gets flower inducing hormone from its host plant. Balanophora, Orobanche and Rafflesia are the total root parasites found on higher plants.

2. Hemiparasites- The organisms which derive only water and minerals from their host plant while synthesising their own food by photosynthesis are called Hemiparasites. They are also called partial parasites.
Examples: Viscum and Loranthus are partial stem parasites. Santalum (Sandal Wood) is a partial root parasite.
The parasitic plants produce the haustorial roots inside the host plant to absorb nutrients from the vascular tissues of host plants.

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