Biology Chapter: Tissues

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Questions and Answers

What is a tissue?

A group of cells that are similar in structure and/or work together to achieve a particular function.

Which type of cells in human beings is responsible for movement?

  • Vascular tissues
  • Muscle cells (correct)
  • Nerve cells
  • Blood cells

What type of organisms have cells that perform all basic functions?

Unicellular organisms

Plants and animals have the same type of tissues.

<p>False (B)</p> Signup and view all the answers

In plants, tissues that divide throughout their life are called ______.

<p>meristematic tissue</p> Signup and view all the answers

How do the growth patterns differ between plants and animals?

<p>Growth in plants is limited to certain regions, while animals grow more uniformly.</p> Signup and view all the answers

Which of the following statements is true regarding plant and animal tissue?

<p>Plants have a large quantity of supportive tissue. (B)</p> Signup and view all the answers

What are the two types of plant tissues based on their dividing capacity?

<p>Meristematic tissue and permanent tissue</p> Signup and view all the answers

In unicellular organisms, a single cell performs all basic ______.

<p>functions</p> Signup and view all the answers

Muscle cells contract and relax to cause ______.

<p>movement</p> Signup and view all the answers

In plants, vascular tissues conduct food and water from one part of the plant to other ______.

<p>parts</p> Signup and view all the answers

Multicellular organisms show ______ of labour.

<p>division</p> Signup and view all the answers

Supportive tissue in plants generally has ______ cells.

<p>dead</p> Signup and view all the answers

Animal tissues are mostly ______ compared to plants.

<p>living</p> Signup and view all the answers

The growth in plants is limited to certain ______.

<p>regions</p> Signup and view all the answers

Cell growth in animals is more ______.

<p>uniform</p> Signup and view all the answers

A group of cells that are similar in structure and/or work together to achieve a ______ function forms a tissue.

<p>particular</p> Signup and view all the answers

The structural organisation of organs and organ systems is more specialised in ______ animals.

<p>complex</p> Signup and view all the answers

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Study Notes

Living Organisms and Cells

  • All living organisms consist of one or more cells.
  • Unicellular organisms, like Amoeba, rely on a single cell for all functions including movement, feeding, gas exchange, and waste elimination.
  • Multicellular organisms have millions of cells, many of which are specialized for distinct functions.
  • Specialized cells enhance efficiency in performing specific tasks in multicellular organisms.

Types of Specialized Cells in Humans and Plants

  • Human body:
    • Muscle cells enable movement through contraction and relaxation.
    • Nerve cells transmit messages throughout the body.
    • Blood transports oxygen, nutrients, hormones, and waste.
  • Plant body:
    • Vascular tissues facilitate the transportation of food and water across different parts of the plant.

Definition and Function of Tissues

  • Tissues consist of groups of similar cells that work together for a common function.
  • Tissues are structured and arranged to maximize functional efficiency.
  • Examples include blood (connective tissue), phloem (vascular tissue), and muscle (muscle tissue).

Comparison of Plant and Animal Tissues

  • Movement

    • Plants are stationary and require supportive tissues, which usually contain dead cells.
    • Animals are mobile, consuming more energy, resulting in predominantly living tissues.
  • Growth Patterns

    • Plant growth occurs in specific regions, characterized by meristematic tissues that continuously divide.
    • Animal growth is more uniform, with no distinct dividing regions, leading to uniform cell growth.
  • Organ Structure and Specialization

    • Complex animals possess more specialized organ structures compared to plants.
    • Variations in organ system design are adaptations to differing lifestyles: sedentary (plants) versus active (animals).

Conclusion

  • The structural and functional differences between plant and animal tissues highlight their adaptations to their respective environments and modes of life.

Living Organisms and Cells

  • All living organisms consist of one or more cells.
  • Unicellular organisms, like Amoeba, rely on a single cell for all functions including movement, feeding, gas exchange, and waste elimination.
  • Multicellular organisms have millions of cells, many of which are specialized for distinct functions.
  • Specialized cells enhance efficiency in performing specific tasks in multicellular organisms.

Types of Specialized Cells in Humans and Plants

  • Human body:
    • Muscle cells enable movement through contraction and relaxation.
    • Nerve cells transmit messages throughout the body.
    • Blood transports oxygen, nutrients, hormones, and waste.
  • Plant body:
    • Vascular tissues facilitate the transportation of food and water across different parts of the plant.

Definition and Function of Tissues

  • Tissues consist of groups of similar cells that work together for a common function.
  • Tissues are structured and arranged to maximize functional efficiency.
  • Examples include blood (connective tissue), phloem (vascular tissue), and muscle (muscle tissue).

Comparison of Plant and Animal Tissues

  • Movement

    • Plants are stationary and require supportive tissues, which usually contain dead cells.
    • Animals are mobile, consuming more energy, resulting in predominantly living tissues.
  • Growth Patterns

    • Plant growth occurs in specific regions, characterized by meristematic tissues that continuously divide.
    • Animal growth is more uniform, with no distinct dividing regions, leading to uniform cell growth.
  • Organ Structure and Specialization

    • Complex animals possess more specialized organ structures compared to plants.
    • Variations in organ system design are adaptations to differing lifestyles: sedentary (plants) versus active (animals).

Conclusion

  • The structural and functional differences between plant and animal tissues highlight their adaptations to their respective environments and modes of life.

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