Tag: structural organization in living organisms

Questions Related to structural organization in living organisms

The integral component of the nervous tissue is 

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Axon

  2. Neuron

  3. Cyton

  4. None of the above

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Correct Option: B
Explanation:
The nervous system has a function in the control and coordination of the body. It consists of nervous tissue. Nervous tissues contain highly specialized cells called neurons or nerve cells. 
So, the correct answer is 'Neurons'.

Cell body is known as

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Axon

  2. Cyton

  3. Neuron

  4. None of he above

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Correct Option: B
Explanation:
Neurons are made up of three parts: cell body, dendrites, and axon. The cell body is also known as cyton consists of nucleus and cytoplasm. Dendrites are short branches arising from cell body whereas axon is a long cylindrical projection of uniform thickness.
So, the correct answer is 'Cyton'.

The voluntary muscles are known as

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Striated muscles

  2. Cardiac muscles

  3. Unstriated muscles

  4. None of the above

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Correct Option: A
Explanation:
Striated muscles or skeletal muscles are the most abundant type of muscle fibers found attached to the bones. They are multinucleated and voluntary in nature. They help in the movement of different parts of the body.
So, the correct answer is 'Striated muscles'.

Which of the following characteristics can be related to cardiac muscles?

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. They are striated.

  2. They are involuntary muscles.

  3. They are less prone to fatigue.

  4. All of the above

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Correct Option: D
Explanation:
The cardiac muscles are present on the wall of the heart. These muscles are striated muscles but involuntary in nature. They are under the control of the autonomic nervous system. Due to the presence of large number of mitochondria, they have the continuous supply of oxygen and hence these muscles are less prone to fatigue.
So the correct answer is 'All of the above'.

The squamous epithelium is mainly involved in

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Protection

  2. Absorption

  3. Secretion

  4. None of these

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Correct Option: A
Explanation:

Squamous epithelium is a type of epithelium tissue. The cells of this tissue are thin, flat and closely packed. These are found in cavities of mouth, oesophagus, alveoli and blood vessels. This tissue gives protection against mechanical injury and also blocks the entry of pathogens or germs. 

So, the correct option is 'Protection'.

Which of the following levels of structure encompasses all the other?

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Tissue

  2. Cell

  3. Organism

  4. Organ or organ system

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Correct Option: A

Choose the correct answers from the alternatives given.
Which one of the following is not a characteristic of animals?

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Heterotrophic

  2. Diplontic life cycle

  3. Have contracting fibres

  4. Single cells or colonial

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Correct Option: D
Explanation:

All animals are eukaryotic, multicellular organisms, and most animals have complex tissue structure with differentiated and specialized tissue. Animals are heterotrophs; they must consume living or dead organisms since they cannot synthesize their own food and can be carnivores, herbivores, omnivores, or parasites.

So, the correct option is 'Single cells or colonial'.

The bundle of axon is known as

zoology structural organization in living organisms specialized cells in animals tissues and types of tissues levels of organisation in animals

  1. Nerve

  2. Cyton

  3. Axon

  4. None of these

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Correct Option: A
Explanation:
Axon is a part of nerve cells or neurons. The bundle of the axon is called a nerve in the peripheral nervous system while it is called a tract in the central nervous system. 
So, the correct answer is 'Nerve'

Meristematic tissue occurs in

biology structural organization in living organisms tissues of plants levels of organisation in plants kinds of plant tissue

  1. Stems

  2. Roots

  3. All growing tips

  4. Both of the (A) and (B)

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Correct Option: D
Explanation:

  • Meristem is the region marked by the presence of active cell growth and the tissues present in meristem are termed as meristematic tissues.
  • On the basis of their position in the plant body, meristems are grouped as apical, lateral or intercalary meristem.
  • Stem has apical meristem in the shoot apex, intercalary meristem in nodes and lateral meristem in form of cambium in vascular bundles.
  • Roots have apical meristem root apex and lateral meristem in form of cambium in vascular bundles. Shoot and root tips are the growing tips of a plant. Due to presence of root cap in terminal position, root apical meristem is subterminal in position thus, not all the growing tips have meristem.
Therefore, the correct answer is option D.

Meristems are

biology structural organization in living organisms tissues of plants levels of organisation in plants kinds of plant tissue

  1. Permanent cells

  2. Dividing cells

  3. Mechanical cells

  4. None of the above

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Correct Option: B
Explanation:

A meristem is the tissue in most plants containing undifferentiated cells, found in zones of the plant, where growth can take place. Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem gives rise to organs like the leaves and flowers, while the root apical meristem provides the meristematic cells for the future root growth. 

So, meristems are dividing cells and not permanent cells as, they differentiate to give various organs
So, the correct answer is 'Dividing cells'