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?
Since parenchyma tissue mainly stores food and other materials, its cells require enough internal space. Therefore, parenchyma cells are generally ________.
A botanist observes a dormant seed with no visible growth or movement. How can the botanist determine whether the seed is alive?
To increase the width or girth of a tree trunk, cells must divide around the stem in a ring-like manner. Which tissue performs this function?
What does the splitting of water molecules during photosynthesis produce?
Which type of plant movement is caused by growth in response to a stimulus?
In plants, growth is restricted to specific regions because of the presence of dividing tissues, which are also known as __________.
Which of the following is a type of nutrition?
I. Heterotrophic
II. Autotrophic
Fungi are always
Which of the following does NOT form an essential part of the process of photosynthesis?
Organisms that generate energy using light are:
Amarbel ( Cuscuta ) is a