Biology · ANIMAL KINGDOM

Consider the statement: 'All vertebrates are chordates, but all chordates are not vertebrates.' Which structural transformation during embryonic development justifies this statement?

A
The dorsal hollow nerve cord is replaced by a ventral solid nerve cord in adult vertebrates
B
The ventral muscular heart is replaced by a dorsal chambered heart during metamorphosis
C
Pharyngeal gill slits are replaced by lungs in all adult chordates
D
The embryonic notochord is replaced by a cartilaginous or bony vertebral column in adult vertebrates

View Answer & Solution

Correct answer · Option D

The embryonic notochord is replaced by a cartilaginous or bony vertebral column in adult vertebrates

Explanation

Members of subphylum Vertebrata possess a notochord during the embryonic period, which is replaced by a cartilaginous or bony vertebral column in adults. Protochordates retain or lose the notochord without forming a vertebral column.

Consider the statement: 'All vertebrates are chordates, but all chordates are not vertebrates.' Which structural transformation during embryonic development justifies this statement?

Correct answer · Option D

Explanation

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Consider the statement: 'All vertebrates are chordates, but all chordates are not vertebrates.' Which structural transformation during embryonic development justifies this statement?

Correct answer · Option D

Explanation

Related questions

OnlineCBT

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Important Pages

Courses & Practice

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