Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Select the incorrect statement about the phylum in which Obelia is placed.

Options

  1. AThey are mostly marine and radially symmetrical animals.
  2. BThey have presence of Cnidoblast.
  3. CSome of the members shows metagenesis.
  4. DThey have a central gastro-vascular cavity with a single opening, mouth on osculum.

Correct answer

D. They have a central gastro-vascular cavity with a single opening, mouth on osculum.

Step-by-step solution

They have a central gastro-vascular cavity with a single opening, mouth on hypostome. Digestion is extracellular and intracellular.

Practice Animal Kingdom on Quantrex Academy →

More from Animal Kingdom

Given below are two statements : Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have th 2026Select the incorrect statements from the following : A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C 2026Which of the following is not a characteristic of chordates ? 2026Match List I with List II : List I List II A. Molluscs I. Pulmonary respiration only B. Reptiles II. Branchial respiration C. Adult amphibians III. Cellular respiration D. Amoeba I 2026A group of researchers procured some fish-like animals and upon investigation the following characters were observed : A. Endoskeleton was made of cartilage. B. Ectoparasitic, as t 2026Select the set of fishes which belong to the class Osteichthyes : 2026The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as : 2026Given below are two statements : Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symme 2026 Full Animal Kingdom list All NTA Abhyas NEET PYQs