Tissues in Physiology

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Questions and Answers

What is the intercellular matrix?

The nonliving material that fills the spaces between cells (correct)

A group of meristematic tissues in plants

A group of structurally and functionally similar cells

The level of organization in multicellular organisms

What is the characteristic of meristematic tissues in plants?

Consist of small, densely packed cells that can keep dividing (correct)

Consist of large, specialized cells with thick cell walls

Contain no intercellular spaces

Lack the ability to divide and form new cells

Which type of tissues are absent in unicellular organisms?

Specialized tissues

Tissues that can organize and regulate an organism’s response to its environment (correct)

Permanent tissues

Embryonic or meristematic tissues

What function do tissues perform in multicellular organisms?

Function as a unit and consist of structurally similar cells Signup and view all the answers

Which type of plants have specialized tissues that can regulate an organism’s response to its environment?

More advanced multicellular animals and plants Signup and view all the answers

What is the main characteristic of meristematic tissue in plants?

Ability to divide and form new cells Signup and view all the answers

What is the function of dermal tissue in plants?

Covering and protecting the plant, and controlling gas exchange and water absorption Signup and view all the answers

Where are meristematic tissues found in dicotyledonous trees and shrubs?

In the cambium between the xylem and phloem Signup and view all the answers

What is the role of trichomes in plants?

Protecting the plant from herbivores and insects Signup and view all the answers

What is the function of ground tissue in plants?

Carrying out different functions based on the cell type and location in the plant Signup and view all the answers

What is the main function of vascular tissue in plants?

Transports water, minerals, and sugars to different parts of the plant Signup and view all the answers

What is the role of xylem tissue in plants?

Transports water and nutrients from the roots to different parts of the plant Signup and view all the answers

What is the role of phloem tissue in plants?

Transports organic compounds from the site of photosynthesis to other parts of the plant Signup and view all the answers

What is the purpose of root hairs in plants?

Increase the surface area of the root for water and mineral absorption Signup and view all the answers

Where are apical meristems found in plants?

Near the tips of roots and stems Signup and view all the answers

What is unique about trichomes found on plants?

They may secrete toxins or block access to herbivores Signup and view all the answers

Study Notes

Intercellular Matrix

The intercellular matrix is the substance that fills the space between cells in multicellular organisms.

Characteristics of Meristematic Tissues

Meristematic tissues in plants are undifferentiated cells that retain the ability to divide and differentiate into different cell types.
They are found in regions of the plant where growth occurs, such as the tips of shoots and roots.

Tissues in Unicellular Organisms

Unicellular organisms lack tissues because they are single-celled organisms.

Functions of Tissues in Multicellular Organisms

Tissues perform specific functions in multicellular organisms, such as providing structural support, transporting materials, and protecting the organism.

Specialized Tissues in Plants

Plants that have specialized tissues capable of regulating an organism's response to its environment include flowering plants and conifers.

Characteristics of Meristematic Tissue

The main characteristic of meristematic tissue in plants is the ability of its cells to divide and differentiate into different cell types.

Functions of Dermal Tissue

Dermal tissue in plants provides a protective outer layer that prevents water loss and protects the plant from pathogens and insects.

Location of Meristematic Tissues

In dicotyledonous trees and shrubs, meristematic tissues are found in the cambium layer, just beneath the bark.

Role of Trichomes

Trichomes are hair-like structures found on the surface of plants that help to reduce water loss and protect the plant from insects and pathogens.

Functions of Ground Tissue

Ground tissue in plants provides structural support and storage for the plant.

Functions of Vascular Tissue

The main function of vascular tissue in plants is to transport water, nutrients, and sugars throughout the plant.

Roles of Xylem and Phloem Tissue

Xylem tissue transports water and minerals from the roots to the leaves.
Phloem tissue transports sugars and other organic compounds produced by photosynthesis from the leaves to the rest of the plant.

Purpose of Root Hairs

Root hairs increase the surface area of the root, allowing for more efficient absorption of water and minerals from the soil.

Location of Apical Meristems

Apical meristems are found at the tips of shoots and roots in plants.

Unique Feature of Trichomes

Trichomes found on plants are unique in their ability to deter insects and other herbivores from feeding on the plant.

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Description

Explore the concept of tissues in physiology, which are groups of structurally and functionally similar cells and their intercellular material. Understand the organization of multicellular organisms and the absence of tissues from unicellular organisms.