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?
Collenchyma
Collenchyma consists of living, elongated cells whose walls are irregularly thickened at the corners, with very little intercellular space.
It is found in leaf stalks (petioles) and below the epidermis of young stems, where it provides mechanical support along with flexibility, allowing these parts to bend without breaking.
Parenchyma and chlorenchyma have thin walls with large intercellular spaces, and sclerenchyma has uniformly thickened, lignified walls of dead cells.
Hence, the answer is Collenchyma.
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 : _________
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?
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
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: