Tag: characteristics of platyhelminthes and aschelminthes

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Multiple choice zoology grades of body organisation characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals basis of the classification of animals criteria for animal classification

Cleidoic egg is found in

  1. Birds

  2. Reptiles

  3. Insects

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cleidoic eggs have a protective shell, and are laid out of water. The shell is porous to air, and may be flexible or calcareous (hard). The eggs contain all the food the embryo needs to develop into a hatchling. The significance of the cleidoic egg is that it enables reproduction out of, and often away from, water. It is a characteristic of birds and reptiles. Hence, option D is correct.

Multiple choice zoology grades of body organisation characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals basis of the classification of animals criteria for animal classification

The presence of gill slits, in the embryos of all vertebrates support the theory of?

  1. Metamorphosis

  2. Biogenesis

  3. Organic evolution

  4. Recapitulation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Metamorphosis is a biological processes by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Metamorphosis is iodothyronine-induced and an ancestral feature of all chordates. For e.g. presence of gill slit in the embryos explains the origin of respiratory systems in all vertebrates.
So the correct answer is 'Metamorphosis'.
Multiple choice zoology grades of body organisation characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals basis of the classification of animals criteria for animal classification

The evolution of this structure lead to the human lineage.

  1. Bone

  2. Cranium

  3. Jaws

  4. Notochord

  5. Vertebrae
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The notochord is the defining structure forming in all chordate embryos. In humans beings, the notochord is formed in the third week and eventually replaced by the vertebral column. 

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

How many features listed are exhibited by flatworms(A) and bacteria(B)?
(i) Growth by increases in mass only
(ii) Regeneration
(iii) Self-consciousness
(iv) Anabolism and catabolism
(v) Binary fission.

  1. A-(i, ii, iii, iv), B-(i, iii, iv)

  2. A-(ii, iv), B-(iv, v)

  3. A-(ii, iii, iv), B-(i, iv, v)

  4. A-(i, ii), B-(iii, iv, v)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flatworms (A) exhibit growth, regeneration, and metabolism (anabolism/catabolism). Bacteria (B) exhibit growth, metabolism, and binary fission. Neither exhibits self-consciousness.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Body cavity of animals derived from Blastocoel is known as

  1. Pseudocoelom

  2. Schizocoelom

  3. Enterocoelom

  4. Haemocoel
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Schizocoelom develops as a split in the mesoderm, e.g.-Arthropods, Annelids, and Molluscs. Enterocoelom is derived from the wall of embryonic gut, e.g.-Echinoderms, and Chordates. Haemocoel is the blood-filled cavity of arthropods. Pseudocoelom is also known as a false cavity.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Which of the following nematodes are parasitic to humans? 

  1. Ascaris

  2. Earthworm

  3. Both A and B

  4. Housefly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. These are long, slender, tapered at both the ends. The body is covered with a thick cuticle secreted by a cellular or syncytial epidermis. The life cycle of Ascaris involves only one host. The man is a definitive host for worm and is present in the gastrointestinal tract and fecal matter. Hence, option A is the correct answer. 

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

_________ is a parasite which also causes waterborne disease.

  1. Roundworm

  2. Tapeworm

  3. Both A and B

  4. Earthworm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Important class of waterborne diseases are caused by metazoan parasites. Typical examples include certain Nematode, that is to say "roundworms". As an example of waterborne Nematode infections, one important waterborne nematodal disease is Dracunculiasis. It is acquired by swallowing water. Therefore, the correct answer is option A.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

The eggs of which parasite are bile stained

  1. Ascaris lumbricoides

  2. Ancylostoma duodenale

  3. Enterobius vermicularis

  4. Necator Americans
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
the fertilized eggs of parasite Ascaris lumbricoides is rounded and has a mineral layer that is often stained by bile as they pass through the excreta
So, the correct answer is 'Ascaris lumbricoides'
Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Animal of which phylum have hooks and suckers and are endoparasite on other animals?

  1. Platyhelminthes

  2. Annelida

  3. Ascheminthes

  4. Arthropoda
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Platyhelminthes or flatworms are dorsoventrally flattened and bilaterally symmetrical worms. They are endoparasites and have parasitic adaptations like hooks and suckers.

So the correct option is A.