Question

Which of the following is not true for excretion in plants?
(1) In plants no definite excretory system or organ is present for removal of the wastes.
(2) In higher plants the waste materials are deposited in various body parts.
(3) CO2 and O2 are produced as wastes during respiration by plants.
(4) Tannin, essential oils, latex, gums are examples of plant waste products.

Answer 1

Plants have no excretory system or organ for waste removal. Plants excrete excess carbon dioxide, oxygen, and water through the stomata, the tiny opening, in the leaves. Options 2, 3 & 4 are true for the plants.

Answer 2

Answer:

In higher plants the waste materials are deposited in various body parts is not true for excretion in plants.

Excretion in Plants :-

• Plants perform chemical process that uses CO2, water, sunlight, and chlorophyl to synthesize food. throughout chemical process, atomic number 8 is given out as a by-product. This atomic number 8 acts as Associate in Nursing excrement and is given out by a method known as diffusion.
• Certain plants perform a method referred to as photorespiration wherever atomic number 8 is taken in and CO2 is given out as a waste.
• All plants perform transpiration that is that the method by that plants transport water from the roots to the aerial components of the plant for elimination within the style of water droplets or water vapor.
• Plants manufacture waste materials that get accumulated within the vacuoles of ageing cells. These cells eventually die and fall-off-the plant. These structures will be stems, leaves or bark of trees.
• Another usually produces material of plants is tannins. tannic acid may be a product of plants that area unit keep within the trunks of trees. they're gift within the bark of the trees.
• The plant structure vascular tissue is chargeable for transporting water and minerals from the soil to the aerial tissues of the plant. The leaves utilize the amount of minerals they need whereas the remainder area unit eliminated. Plants eliminate excess salt and minerals within the style of crystals like Na salt crystals, carbonate etc.
• Like animals, plants conjointly eliminate ammonia merchandise like alkaloids. The common sort of alkaloids that plants manufacture area unit analgesic, chemical compound that is employed to treat several human diseases.
• Another waste that plants manufacture is latex. These area unit created by cells known as lactifiers and located in rubber plants. This latex that's a waste for plants is really terribly helpful to man within the manufacture of the many rubber merchandise.
• Plants conjointly manufacture gums that are literally a degradation product of cells. These also are helpful to man within the manufacture of the many merchandise.
• Gums and Resins that a plant produces area unit essentially keep in ageing or previous vascular tissue.
• Few plants conjointly eliminate their waste into the soil through their roots.

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