One of the following can’t be taken as the character of non-chordates

Question

One of the following can’t be taken as the character of non-chordates (A) Absence of notochord (B) Heart is ventral (C) Gill slits are absent (D) Chitinous exoskeleton present

Tardigrade Admin · Accepted Answer

Characteristic of chordates are: a. Absence of notochord - in non-chordates, notochord is absent b. Heart is present in dorsal in position in non-chordates c. Gills slits are absent d. In some non chordate e.g. arthropod, chitin exoskeleton is present Heart is dorsal, not ventral in non chordates.

Q. One of the following can’t be taken as the character of non-chordates

Absence of notochord

Heart is ventral

Gill slits are absent

Chitinous exoskeleton present

Characteristic of chordates are :
a. Absence of notochord - in non-chordates, notochord is absent
b. Heart is present in dorsal in position in non-chordates
c. Gills slits are absent
d. In some non chordate e.g. arthropod, chitin exoskeleton is present
Heart is dorsal, not ventral in non chordates.

Q. One of the following can’t be taken as the character of non-chordates

Absence of notochord

Heart is ventral

Gill slits are absent

Chitinous exoskeleton present

Characteristic of chordates are : a. Absence of notochord - in non-chordates, notochord is absent b. Heart is present in dorsal in position in non-chordates c. Gills slits are absent d. In some non chordate e.g. arthropod, chitin exoskeleton is present Heart is dorsal, not ventral in non chordates.

Characteristic of chordates are :
a. Absence of notochord - in non-chordates, notochord is absent
b. Heart is present in dorsal in position in non-chordates
c. Gills slits are absent
d. In some non chordate e.g. arthropod, chitin exoskeleton is present
Heart is dorsal, not ventral in non chordates.