How do plants excrete their waste products?
By storing them in vacuoles or excreting through falling leaves and resins
Plants do not have dedicated excretory organs, so they handle wastes in several ways: many waste products are stored in cell vacuoles or as gums, resins and crystals, and a large amount is removed when old leaves and bark fall off the plant.
Plants also release some wastes into the surrounding soil through their roots, and gaseous wastes through stomata, but the key point is storage and shedding rather than a special organ.
"Through root hairs only" is wrong because root hairs mainly absorb water and minerals; excretion is not limited to them.
"Converting all wastes into oxygen and carbon dioxide" is wrong because most plant wastes are organic compounds that are not turned wholesale into these gases.
Nephrons are filtering units of the animal kidney; plants have no nephrons.
Hence, plants excrete by storing wastes in vacuoles or removing them through falling leaves and resins.
Which of the following statements is/are correct regarding vegetative propagation?
Statement A: Root, stem and leaves develop into new plants under appropriate conditions.
Statement B: Vegetative propagation is used in sugarcane, roses and grapes.
Which of the following plant nutrients is supplied from air?
The parenchyma cells in plants are:
Which of the following options best describes a component of a flower's reproductive system?
Complete the analogy.
Meristematic Tissue : Dividing capacity :: Simple Permanent Tissue : _________
During a histological examination of a plant’s leaf stalk, elongated cells with irregularly thickened corners and very little intercellular space are observed. Which simple permanent tissue is present and what is its primary function in this region?
In geotropism, what does gravity act as?
Complete the analogy. Xylem : Water Transport :: Phloem : ______.
In a habitat recently affected by drought, which feature would most likely allow gymnosperms to persist when other plants fail?
Since plants prepare their own food using sunlight, they do not require a digestive organ like a stomach. Instead, they possess tissues specialized for ____.
Which of the following is a type of nutrition?
I. Heterotrophic
II. Autotrophic
Which of the following does NOT form an essential part of the process of photosynthesis?
Part of N 2cycle that is opposed to N 2fixation is:
Which among the following is the reproductive part of a plant?
Fibres (Adventitious) roots are found in :