Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
What is the function of the proboscis gland in Hemichordata?
The NCERT text explicitly mentions, 'Excretory organ is proboscis gland' in Hemichordata.
Which of the following characteristics is common to both Hemichordata and Echinodermata, as described in the provided context?
The NCERT text states that Hemichordates are 'worm-like marine animals' and Echinoderms are 'All are marine'. While other options may relate to one, 'exclusively marine' is common to both as per the text.
The level of organization found in Phylum Hemichordata is:
The NCERT mentions, 'This phylum consists of a small group of worm-like marine animals with organ-system level of organisation.' This is further supported by the summary that discusses the basis of classification.
Which of the following examples are correctly associated with Phylum Hemichordata?
The NCERT provides, 'Examples: Balanoglossus and Saccoglossus' under the description of Phylum Hemichordata.
In Hemichordata, what is the nature of fertilization and development?
The NCERT states, 'Fertilisation is external. Development is indirect.' for Hemichordata.
What is the rudimentary structure found in the collar region of Hemichordates, considered similar to a notochord?
The NCERT text describes, 'Hemichordates have a rudimentary structure in the collar region called stomochord, a structure similar to notochord.'
Regarding the body plan of Hemichordata, which combination of features is accurate?
The NCERT states, 'They are bilaterally symmetrical, triploblastic and coelomate animals.' for Hemichordata.
Which of the following body parts are distinct segments of a Hemichordate body?
The NCERT chapter explicitly describes the Hemichordate body as 'composed of an anterior proboscis, a collar and a long trunk.'
Which of the following classes are grouped under Tetrapoda based on the presence of two pairs of limbs?
As per the NCERT text: 'Classes, Amphibia, Reptilia, Aves and Mammalia have two pairs of limbs and are thus grouped under Tetrapoda.'
Amphibians are characterized by their adaptation to live in which environments?
The context states: 'The amphibians have adapted to live both on land and water.'
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