Animal Kingdom
In which among the following animals, retrogressive metamorphosis is found?
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Single Choice
Which of the following statements are true for the phylum-Chordata? a) In Urochordata notochord extends from head to tail and it is present throughout their life. b) In Vertebrata notochord is present during the embryonic period only. c) Central nervous system is dorsal and hollow. d) Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.
A(c) and (a)
B(a) and (b)
C(b) and (c)
Correct Answer
D(d) and (c)
Solution
Characteristics of phylum chordata are,
Presence of notochord , pharyngeal gills and post anal tail during some stage of embryonic development.
The central nervous system is dorsally present and hollow.
So, the correct answer is '(b) and (c)'
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