Easy
Medium
Hard
100
"Which type of tissue forms the epidermis in plants?"
Protective Tissues
100
"Which epidermal cells are green due to chlorophyll?"
Guard cells.
100
Where is the epidermal cell present?
200
"What is the epidermis in plants, and what substance does it secrete?"
The epidermis is the single-layered outermost covering of the plant. It secretes a waxy substance called cutin.
200
"What are the main functions of the plant epidermis?"
Protection – It protects the plant against water loss, mechanical injury, and invasion by microorganisms.
Gas exchange – It allows exchange of gases through stomata during photosynthesis, respiration, and transpiration.
200
"Describe the structure of epidermal cells and name the small pores present in them."
Structure: Epidermal cells form a continuous layer without intercellular spaces. They are flat, with outer and side walls thicker than the inner wall.
Small pores: The stomata are the small pores present in the epidermis.
300
"What is the structure of stomata, where are they found, and what are their functions?"
Stomata are small pores present in the epidermis of leaves. Each stoma is flanked by a pair of bean-shaped guard cells and is surrounded by other epidermal cells. Their functions are to allow gas exchange during photosynthesis and regulate water loss through transpiration.
300
"What is the cuticle in plants, and how does it protect them?"
The cuticle is a waxy, water-resistant layer secreted by the epidermis, called cutin. It protects the plant by reducing water loss and preventing invasion by microbes.
300
Application Based Question
A farmer notices that his crops are drying up quickly during summer due to water loss from the leaves. He asks you for a scientific reason and a possible solution.
Using your knowledge of the epidermis, explain why this happens.
Suggest one natural adaptation or method that could help the plants reduce water loss.
All plants have an epidermis, but during summer, water escapes through stomata by transpiration, which can make the plant dry. A natural adaptation is a thicker cuticle on the epidermis, which reduces water loss and helps the plant stay hydrated.