Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?
Correct answer: C. It is absent throughout life in humans from the very beginning
- A. It is present only in larval tail in ascidian
- B. It is replaced by a vertebral column in adult frog
- C. It is absent throughout life in humans from the very beginning
- D. It is present throughoutlife in Amphioxus
Explanation
Humans are mammals which are chordates. Phylum chordata includes animals which possess a notochord either throughout or during early embryonic life. In Ascidia (urochordata), notochord is present only in larval tail while in Amphioxus (cephalochordata), it extends from head to tail region and is persistent throughout their life. It is replaced by a vertebral column in adult frog.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Kingdom Animalia questions
In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
What will you look for to identify the sex of the following?
Which one of the following categories of animals is correctly described with no exception in it?
Ureters act as urinogenital ducts in _
Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?
Which one of the following kinds of animals are triploblastic?