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Regeneration and Ageing (AIPVT)

Description: Aging death regeneration Reproduction in Animals
Number of Questions: 15
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Tags: Aging death regeneration Reproduction in Animals
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During which phase of the regeneration of limbs in salamander do the epidermal cells migrate to the site of injury?

  1. Blastema formation

  2. Growth

  3. Morphogenesis

  4. Wound healing


Correct Option: D
Explanation:

During the wound healing phase of the regeneration of limbs in salamander, the epidermal cells migrate to the site of injury.

Which is the only human tissue that completely regenerates after disruption and interruption of morphology?

  1. Liver

  2. Kidney

  3. Endometrium

  4. Finger


Correct Option: C
Explanation:

Endometrium is the only human tissue that completely regenerates after disruption and interruption of morphology.

Which was the first artificially regenerated human organ?

  1. Heart

  2. Penis

  3. Bladder

  4. Lung


Correct Option: C
Explanation:

In 1999, bladder was the first regenerated organ to be given to seven patients.

Nuclear pyknosis refers to

  1. decrease in the amount of nucleoplasm on ageing

  2. shrinking of nucleus and its staining deeply

  3. degeneration of nuclear membrane

  4. decrease in genetic material inside the nucleus


Correct Option: B
Explanation:

The degenerative process in which nucleus becomes shrunken and stains deeply is referred to as nuclear pyknosis.

Which part of the human body is regenerated in coelenterates?

  1. Limbs

  2. Fragmented body part

  3. Head

  4. Arm


Correct Option: B
Explanation:

Fragmented body parts are the regenerated in coelenterates.

What is/are the type(s) of growth in warm-blooded animals?

  1. Indeterminate

  2. Determinate

  3. Uncontrolled

  4. Both (1) and (3)


Correct Option: B
Explanation:

Growth in warm-blooded animals is determinate.

Which part(s) of arthropods regenerate(s) after being lost?

  1. Arms

  2. Limbs

  3. Head

  4. Foot


Correct Option: B
Explanation:

Limbs regenerate in arthropods.

According to ________, ageing is caused due to increase in number of bonds between proteins and nucleic acid molecules in cells.

  1. gene theory

  2. cross-linkage theory

  3. metabolic rate theory

  4. error catastrophe theory


Correct Option: B
Explanation:

According to cross-linkage theory, ageing is caused due to increase in number of bonds between proteins and nucleic acid molecules.

Which cells do not have the ability to regenerate naturally?

  1. Liver cells

  2. Kidney cells

  3. Nerve cells

  4. Epidermal cells


Correct Option: C
Explanation:

Nerve cells do not have the ability to regenerate.

According to immunity theory, ageing is caused by the disappearance of

  1. thyroid

  2. pineal

  3. thymus

  4. pituitary


Correct Option: C
Explanation:

As per immunity theory, disappearance of thymus gland results in ageing.

What does macular degeneration result in?

  1. Loss of sense of smell

  2. Loss of vision

  3. Loss of hearing

  4. Insensitivity to touch


Correct Option: B
Explanation:

Macular degeneration causes loss of vision.

In which organ(s) is the phenomenon of compensatory hypertrophy seen?

  1. Human kidney

  2. Human liver

  3. Tail of a lizard

  4. Both (1) and (2)


Correct Option: D
Explanation:

The phenomenon of compensatory hypertrophy is seen in regeneration of human kidney and liver.

What is gerontology?

  1. Treatment of a disease in aged people

  2. Science of progress in ageing

  3. Study of diseases during ageing

  4. Science of women


Correct Option: B
Explanation:

Science of progress in ageing is called gerontology.

Who first reported the phenomenon of regeneration?

  1. Morgon

  2. Trembley

  3. Orgel

  4. Miller


Correct Option: B
Explanation:

Trembley first reported regeneration in hydra.

Which of the following changes takes place on ageing?

  1. Decrease in cholesterol level

  2. Decrease of calcium content

  3. Increase in calcium content

  4. Increase in water retention power


Correct Option: B
Explanation:

Calcium content decreases on ageing.

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