Plant Tissue Systems and Functions

The video tutorial provides an overview of plant tissue systems, including epidermal, vascular, and ground tissue systems. It explains the structure and function of each system, highlighting key components like stomata, xylem, phloem, and parenchyma cells. The tutorial also covers the arrangement of vascular bundles and the role of different tissues in plant physiology.

What are the three tissue systems recognized by Sachs in 1875?

• Parenchyma, Collenchyma, and Sclerenchyma

• Xylem, Phloem, and Cambium

• Dermal, Ground, and Vascular

• Epidermal, Vascular, and Fundamental

Which component of the epidermal tissue system is primarily involved in gaseous exchange?

• Root hairs

• Cuticle

• Stomata

• Trichomes

What is the main function of trichomes in plants?

• Photosynthesis

• Water absorption

• Nutrient storage

• Seed and fruit dispersal

In a dicot stem, what type of vascular bundle is present?

• Concentric vascular bundle

• Open vascular bundle

• Closed vascular bundle

• Radial vascular bundle

Which type of vascular bundle has phloem on both sides of the xylem?

• Collateral

• Concentric

• Radial

• Bicollateral

What is the arrangement of xylem in roots called when protoxylem is towards the periphery?

• Concentric

• Radial

• Exarch

• Endarch

In monocot stems, how is the ground tissue system characterized?

• Differentiated into cortex, endodermis, and pith

• A continuous mass of parenchyma tissue

• Composed of sclerenchyma cells

• Separated by vascular bundles

What is the innermost layer of the cortex called?

• Endodermis

• Epidermis

• Pith

• Pericycle

Where do lateral roots originate from in plants?

• Pericycle

• Endodermis

• Epidermis

• Pith

What substances are commonly stored in the pith of plants?

• Proteins and lipids

• Sugars and amino acids

• Chlorophyll and water

• Starch, tannins, and phenols