What are Meristematic Tissues? | Infinity Learn

Summary

This educational video script explores the concept of meristematic tissues in plants, which are responsible for growth. It introduces three types of meristematic tissues: apical, lateral, and intercalary, each with a distinct role in plant development. Apical meristems are found at the tips of stems and roots, increasing the plant's length. Lateral meristems, or cambium, contribute to the plant's girth. Intercalary meristems are located at the base of leaves or internodes, aiding in the growth of twigs into branches. The script also touches on the cells' need for energy and nutrition and their initial undifferentiated state, which changes post-growth into specialized tissue components.

Takeaways

• 🌿 Plants have two types of tissues: dividing tissues and non-dividing tissues.
• 🔬 Dividing tissues in plants are referred to as 'meristematic' tissues, which originates from the Greek word 'meristos' meaning 'divided'.
• 📍 Meristematic tissues are found in areas of the plant where growth occurs, such as the tips of stems and roots.
• 🌱 There are three main types of meristematic tissues: apical, lateral, and intercalary meristems.
• 🌱🌱 Apical meristem is located at the growing tips of stems and roots and is responsible for increasing the length of the plant.
• 🌱🌲 Lateral meristem, also known as the cambium, is found on the sides of the plant and contributes to the increase in girth.
• 🌱🍃 Intercalary meristem is found at the base of leaves or internodes and aids in the growth of twigs into branches.
• 💧 Meristematic tissues are very active and require a lot of energy and nutrients due to their high metabolic activity.
• 🔄 Initially, meristematic tissues are undifferentiated but specialize into various types after contributing to the plant's growth.
• 🔄🌳 Meristematic tissues perform the function of 'simple growth' before they mature and differentiate into specialized components.

Q & A

What are the two types of tissues found in plants?

The two types of tissues found in plants are dividing tissues and non-dividing tissues.

What is the technical term for dividing tissues in plants?

The technical term for dividing tissues in plants is 'meristematic tissues'.

What is the origin of the word 'meristematic'?

The word 'meristematic' comes from the Greek word 'meristos', which means 'divided'.

Where are meristematic tissues typically found in plants?

Meristematic tissues are typically found in areas of the plant where growth occurs, such as the tips of stems and roots.

How many different parts of a plant contain meristematic tissues?

There are three different parts of a plant that contain meristematic tissues.

What are the three main types of meristematic tissues?

The three main types of meristematic tissues are apical meristem, lateral meristem, and intercalary meristem.

What is the function of apical meristem tissues in plants?

Apical meristem tissues are found in the growing tips of stems and roots and help increase the length of the plant.

Where is the lateral meristem located and what is its function?

The lateral meristem is located in the girth or cambium of the plant and its function is to increase the girth of the plant.

In which part of the plant is intercalary meristem found, and what does it facilitate?

Intercalary meristem is found at the base of leaves or in the internodes, and it facilitates the growth of twigs into branches.

What is a characteristic of cells in meristematic tissues?

Cells in meristematic tissues are filled with cytoplasm, requiring a lot of energy and nutrition to carry out their functions.

How do meristematic tissues change after the plant has grown?

After the plant has grown and the meristematic tissues have matured, they change characteristics and differentiate into components of a single tissue, with division of labor taking place only after maturity.

What is the initial state of meristematic tissues before they differentiate?

At the initial stages, meristematic tissues are not differentiated into any specific types and exhibit the same function of 'simple growth' of the plant.