Biology · Science General

Diversity in Living Organisms

3,323 Questions

The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

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

Restorative regeneration is common in

  1. Vertebrates

  2. Mostly invertebrates

  3. In some vertebrate groups

  4. In some invertebrate groups
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Formation of new parts of the body, which are lost due to injury or accidents is called Restorative regeneration. It is found in invertebrates.

So, the correct option is ‘in some invertebrate groups’.

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

Regeneration of a limbs or tail is an example of

  1. Compensatory hypertrophy

  2. Epimorphosis

  3. Morphallaxis

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

Regeneration of limbs or tail is a epimorphosis regeneration. Replacement of lost organ of the body by proliferating new cells from the surface of the injured part is called Epimorphosis regeneration. eg: Limb in a Salamander, Tail in a Lizard.

So, the correct option is ‘Epimorphosis’.

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

Read the statements and find out true/false 
(a) Type of regeneration in Hydra is known as epimorphosis 
(b) Members of reptiles such as lizards exhibit autotomy
(c) Regeneration of limb in amphibians involves morphallaxis

  1. a and c are false but b is true

  2. b and c are false but a is true

  3. b and c are true but a is false

  4. a and c are true but b is false
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

a)Type of regeneration in Hydra is known as epimorphosis is false, because it is Morphallaxis.

b)Members of reptiles such as lizards exhibit autotomy are true.

c)Regeneration of limb in amphibians involves morphallaxis is false because it is a epimorphisms.

So, the correct option is ‘a and c are false but b is true’.

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

Which is the correct example of the type of regeneration out of the two major types ?

  1. Morphallaxis-Regeneration of two transversely cut equal pieces of one Hydra into two small Hydras

  2. Epimorphosis-Replacement of old and dead erythrocytes by the new ones

  3. Morphallaxis-Healing of wound in the skin

  4. Epimorphosis-Regeneration of crushed and filtered out pieces of Planaria into as many new planarians
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A.Morphallaxis – Regeneration of two transversely cut equal pieces of one Hydra into small Hydras is true.

B.Epimorphosis – Replacement of old and dead erythrocytes by the new ones is false because The regeneration of tissues or organs through the dedifferentiation of existing, differentiated adult tissues is called Epimorphosis.

C.Morphallaxis – Healing of wounds in the skin is false, because, The reconstruction of an entire animal from a small fragment by reorganizing the existing cells, is called Morphallaxis.

D.Epimorphosis – Regeneration of crushed and filtered out pieces of Planaria into as many new planarians is false, because The reconstruction of an entire animal from a small fragment by reorganizing the existing cells, is called Morphallaxis.

So, the correct option is ‘Morphallaxis – Regeneration of two transversely cut equal pieces of one Hydra into small Hydras is true’.

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

Characteristic autonomy occurs in ______________.

  1. Lizards

  2. Snakes

  3. Frogs

  4. Cockroaches
Reveal answer Fill a bubble to check yourself
A 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 ‘Lizzards’.

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

Read the statements and choose the correct answer
(a) Type of regeneration in Hydra is known as epimorphosis
(b) Reptiles such as lizard exhibit autotomy
(c) Regeneration of amphibian limb involves morphallaxis. Of these statements

  1. a and b are false and c is true

  2. b and c are false but a is true

  3. b and c are true, a is false

  4. a and c are false but b is true
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

a)Type of regeneration in Hydra is known as epimorphosis is false, because it is Morphallaxis.

b)Members of reptiles such as lizards exhibit autotomy is true.

c)Regeneration of limb in amphibians involves morphallaxis is false because it is an epimorphism.

So, the correct option is ‘a and c are false, but b is true’.

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 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’.

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

Morphallaxis is reported in

  1. Porifers

  2. Coelenterates and flatworms

  3. Nemarteans and some ascidians

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

The reconstruction of an entire animal from a small fragment by reorganizing the existing cells, is called Morphallaxis. The regenerated animal is far smaller than the original one after the completion of the process. It grows to attain the normal size. It is reported in Porifers, Coelenterates, flatworms, Nemarteans, and some ascidians.

So, the correct option is ‘Porifers, Coelenterates, flatworms, Nemarteans, and some ascidians’.

Multiple choice zoology production of food from animals animal breeding animal husbandry and its importance introduction to animal husbandry

Arabian Race Horse has developed through 

  1. Natural evolution

  2. Human efforts

  3. Special environmental conditions

  4. A chance cross between Horse and Zebra
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Arabian is the original race horse. When the English breeders wanted to add speed and endurance to their horses, they turned to the Arabian. The result was the Thoroughbred. But the Arabian was the source, its blood and spirit created the Sport of Kings. Hence, Arabian Race Horse has developed through human efforts.

So, the correct answer is 'Human efforts'.

Multiple choice botany plant tissue system ground tissue system ground tissues tissue systems

Which of the following does not contain pith?

  1. Siphonostele

  2. Protostele

  3. Eustele

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Protostele is the most primitive type of stele with central xylem surrounded by phloem and pericycle. Pith is absent in them. Medullation (appearance of pith) of a protostele with central pith is called as siphonostele and thus has central pith surrounded by xylem, phloem and pericycle. Separation of vascular strands by parenchyma in siphonostele give rise to eustele. Thus, the correct answer is option B.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following options shows bisexual animals only?

  1. Amoeba, sponge, leech

  2. Sponge, cockroach, Amoeba

  3. Earthworm, sponge, leech

  4. Tapeworm, earthworm, honeybee
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
When both male and female sex organs are present in the same individual, such animals are called hermaphrodite or bisexual, e.g, tapeworm, earthworm and leech.
So, the correct answer is 'Earthworm, sponge, leech'.