Why do plants need a specialized transportation system for water and minerals?
Because diffusion alone is insufficient for large distances in tall plants
Diffusion, the passive movement of substances from a region of higher to lower concentration, works only over very short distances.
Tall plants must move water and minerals from the roots all the way to the leaves, which is many metres, and diffusion alone is far too slow for that.
So plants develop xylem and phloem, specialised conducting tissues, to carry water, minerals and food quickly over long distances.
Hence, the answer is Because diffusion alone is insufficient for large distances in tall plants.
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?
How do plants excrete their waste products?
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?
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:
Part of N 2cycle that is opposed to N 2fixation is: