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| Name | Heterotrophic Plants | Saprophytic | Parasitic | Insectivorous plants |
| Video Uploader | Video From Mercy Education media |
| Upload Date | This Video Uploaded At 13-08-2020 02:30:03 |
| Video Discription | Heterotrophic plants are grouped into saprophytic, parasitic and insectivorous plants. Saprophytic plants: These plants obtain nutrition from non-living organic matter. They are called saprophytic plants. Many fungi and bacteria are saprophytes. Certain angiosperms like Monotropa lack chlorophyll and have mycorrhizal roots. This plant absorbs nourishments from the humus through their mycorrhizal roots. Parasitic plants: Some plants get their nourishments from other living plants or animals. They are called parasitic plants. The plants or animals from which the parasites get their nourishments are called hosts. Parasites have some special roots, which penetrate the host plants and absorb food from the phloem and water and minerals from xylem. These roots are called haustoria. Parasitic angiosperms are of two types. They are total parasites and partial parasites. Some plants completely lack chlorophyll and do not grow in the soil. Therefore, it is totally dependent on the host stem for organic food materials, water and minerals. They are called total parasites. eg. Cuscuta. Cuscuta has thin, pale yellow and leafless stem. It twines around the stem of the host and sends haustoria into it to absorb nourishments. Some plants absorb only water and mineral salts from the stem of host plant. They can manufacture their own food due to the presence of green leaves. The haustoria of these plants have connection only with the xylem of the host to absorb water and mineral salts. These plants are called partial parasites. eg. Viscum. Insectivorous plants: Though insectivorous plants are capable of manufacturing carbohydrates by photosynthesis, they are not able to synthesize enough proteins due to the deficiency of nitrogen. They overcome this deficiency by catching small insects and digesting them. Their leaves are modified in various ways for this purpose. Such plants are called insectivorous plants. Eg. Drosera. Drosera: Drosera is a small plant growing in marshy places. This plant is also known as sundew plant. The leaves of this plant have numerous hair-like structures called tentacles. Each tentacle has got a gland at the tip. The gland secretes a sticky fluid. This fluid shines in sunlight and appears as dew; hence the plant is called sundew plant. When an insect is attracted by the shining sticky fluid and tries to sit on the leaf, it is entangled in the sticky fluid. At once, the sensitive tentacles surround the insect and curve inward on it. Then the glands secrete digestive juices which contain proteolytic enzymes. The enzymes digest the proteins of the insect body. The digested food is finally absorbed by the leaves and the tentacles again come in their original straight position. Disclaimer This channel does not promote or encourage any illegal activities. All contents provided by this channel for general and education purpose only. Copyright disclaimer under section 107 of the copyright act 1976,allowance is made for "fair use policy" for purposes such as criticism, comment, news reporting,teaching,scholarship and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. |
| Category | Education |
| Tags | Heterotrophic plants | carnivorous plants | insectivorous plants | pitcher plant | Saprophytic | saprophytic plants | Monotropa lack chlorophyll | nutrition from non-living organic matter | Epiphyte | Total parasite | Partial parasite | Modes of nutrition | Drosera | Parasitic plants | hosts | Parasitic angiosperms | Cuscuta | Viscum | sundew plant | tentacles | sticky fluid |
