Tag: regeneration

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Questions Related to regeneration

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

It can regenerate entire alimentary canal ____________.

  1. Fish

  2. Amphibian

  3. Bird

  4. Sea Cucumber
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A. Fish - can regenerate almost any part of their central nervous system.

B.Amphibia – can regenerate their limbs.

C.Birds – regenerate their hair cells, feathers.

D.Sea cucumber - can regenerate entire alimentary canal.

So, the correct option is ‘ Sea cucumber’.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Regeneration of liver is

  1. Epimorphosis

  2. Reparative regeneration

  3. Metamorphosis

  4. Morphogenesis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A. Epimorphosis - Regeneration of limbs or tail is an epimorphosis regeneration. Replacement of lost organ of the body by proliferating new cells from the surface of the injured part is called Epimorphosis.

B. Reparative regeneration - Regeneration of damaged cells or tissues in the injured parts, in multicellular organisms is called reparative regeneration.

C. Metamorphosis - the process of transformation from an immature form to an adult form in two or more distinct stages.

D. Morphogenesis - the biological process that causes an organism to develop its shape.

So, the correct option is ‘Reparative regeneration’.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Among the vertebrates, which organism exhibits the maximum power of regeneration?

  1. Dog

  2. Lizard

  3. Pigeon

  4. Man
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Regeneration is the process by which certain organisms can replace or restore their lost or amputated body parts. Different organisms have different ability to regenerate their body parts. There are certain organisms such as starfish, crayfish, many reptiles and amphibians which exhibit remarkable tissue regeneration. For example, deer can regrow their antlers, lizards can regrow their tails and starfishes can regrow their limbs. Lizards discard their tails as a result of defense mechanism and can regrow it within 60 days. 

Thus, the correct answer is option B. 

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Regeneration is the same as reproduction.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Regeneration is the process of renewal, restoration and growth that makes genomes, cells , organisms and ecosystems.
While reproduction is the biological process by which new individual organism, i.e., offspring are produced form their parents.
Thus, the correct answer is option (B), 'False'.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Planaria possesses high capacity of

  1. metamorphosis

  2. regeneration

  3. alternation of generations

  4. bioluminescence
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Planaria belongs to the phylum Platyhelminthes.

Planaria live in groups. And is found commonly in freshwater pond, lakes, streams and shallow rivers.
They have a high capacity of the generation due to the neoplastic cells which are found in them
If an individual is cut transversely into two parts, the anterior segment will generate a new tail and posterior end will develop a new head.
So, the correct option is 'regeneration'

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Which of the following animals can regenerate arms and parts of the body?
(a) Star fish
(b) Brittle star
(c) Sea lily
(d) Aves

  1. a, b and c

  2. a and b

  3. b and d

  4. a and c

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Many animals can regenerate, that is, regrow or grow new parts of their bodies to replace those that have been damaged. Echinoderms can regenerate missing limbs, arms, spines and even intestines (for example sea cucumbers). Some brittle stars and sea stars can reproduce asexually by breaking a ray or arm or by deliberately splitting the body in half. Each half then becomes a whole new animal. Planarians are flatworms when cut into pieces, each piece can grow into a new worm. Sea cucumbers have bodies that can grow to be three feet long and shows the phenomena of regeneration. Spiders can regrow missing legs or parts of legs. Sponges can be divided. The cells of the sponge will regrow and combine exactly as before. Starfish that lose arms can grow new ones, sometimes an entire animal can grow from a single lost arm. Birds (Aves) on the other hand, do not have this ability

Therefore, the correct answer is option A.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Arrange the following in sequential order.
a) Autolysis and phagocytosis to remove the cell debris.
b) Wound closure by epidermal tissue.
c) Formation of the blastema.
d) Redifferentiation of cells.
e) The growth of blastema.
f) Dedifferentiation of tissues.

  1. b, a, f, c,e,d

  2. d, a, f, c,e,b

  3. b, a, e, c,f,d

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The sequential order of wound healing is :
  • b)Wound closure by epidermal tissue.
  • a) Autolysis and phagocytosis to remove the cell debris.
  • f) Dedifferentiation of tissues.
  • c) Formation of the blastema(mass of cells capable of growth and regeneration into organs or body parts).
  • e) The growth of blastema.
  • d) Dedifferentiation of tissues.
  • So, the correct answer is 'b, a, f, c,e,d'.
Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Which one is not a case of epimorphosis ?

  1. Replacement of limb in Salamander

  2. Formation of sperms from small clump of cells

  3. Replacement of severed arm of Star Fish

  4. Regeneration of tail by lizard
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Epimorphosis is a type of regeneration involving the formation of a blastema and cell proliferation. The formation of sperms is gametogenesis, not regeneration.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Autotomy is recorded in

  1. Legs in crabs

  2. Tail of lizards

  3. Viscera in holothurian echinoderms

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The spontaneous removal or casting off of a body part, especially when the organism is injured or under attack is autotomy or self ampulation. It is recorded in loss legs in crabs, loss of tails in lizards, loss of viscera in Holothurian echinoderms.

So, the correct option is ‘All the above’.