Tag: diversity in living world
Questions Related to diversity in living world
Toothed, funnel-like sucking mouth seen in
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Lamprey
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Myxine
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Ostracodermi
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Hilsa
Adult lamprey may be characterised by toothed, funnel like sucking mouth. The common name 'lamprey' is probably derived from latin, 'lampetro' which may mean stone licker.
Circular and suctorial mouth is present in
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Labeo
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Petromyzon
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Scolidon
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All of the above
Petromyzon (lampreys) are all carnivorous and are true predators. The method of attack is very peculiar. It attack fishes, turtles etc and it attach themselves by suctorial mouth which is circular in shape. Mouth acts a sucker, it rasps the flesh of the prey with its tongue. Teeth which are situated around the mouth sink into the flesh of the prey and serve it to hold properly.
Kingdom Animalia is also known as
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Metazoa
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Protozoa
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Both A and B
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None of the above
Metazoa is the term given to the fully developed complex organism having tissue level organization. Kingdom Animalia is considered as metazoa. All the members of this kingdom are multicellular, eukaryotes. They are heterotrophs, they depend on other organisms directly or indirectly for food. Most of the organisms are motile which means they can move independently and spontaneously.
Vertebrata consist of which classes from the following?
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Bony fish
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Amphibians
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Reptiles
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All of the above
Vertebrata is the most important part of chordate and is distinguished by a backbone (made either of bone or cartilage) having bones known as vertebrae and a skull enclosing a brain. The nervous system is entirely protected by these structures and also maintains the shape of the body.
Which of the following is the most important part of chordate?
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Hermichordate
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Vertebrata
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Mollusca
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All of the above
Vertebrata is the most important part of chordate and is distinguished by a backbone (made either of bone or cartilage) having bones known as vertebrae and a skull enclosing a brain. The nervous system is entirely protected by these structures and also maintains the shape of the body.
In bioluminesence storage, energy changes into _____________.
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Light energy
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Radiant energy
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Chemical energy
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Mechanical energy
In bioluminescence, stored chemical energy on oxidation emits lights.
Petromyzon belongs to class
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Osteichthyes
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Chondrichthyes
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Cyclostomata
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Amphibia
Which is true?
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All living members of class cyclostomata are parasites on some fishes
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There are about 2000 species in the class osteichthyes
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Ciona belongs to subphylum cephalo chordata
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Arthropods are diploblastic animals
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Ascaris lumbricoides is a flatworm
Which one pair comprises jawless fishes?
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Mackerels and Rohu
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Lampreys and Hag Fishes
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Lampreys and Eels
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Guppies and Hag Fishes
Agnatha or Cyclostomata are characterised by
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Absence of jaws and presence of suctorial mouth.
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Presence of suctorial mouth, the absence of jaws, the presence of single nostril and unpaired fins.
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Absence of mouth, presence of single nostril.
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Round mouth with triradiate lips.
- They are jawless.
- They have a single median nostril.
- Their mouth is suctorial and circular.
- Body is elongated but no paired appendages or fins are present i.e. fins are unpaired.