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Types of Neurons

Which of the ...

Question

Which of the following is not true for chordates?

A

Notochord is present

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B

Pharynx is perforted by gill slits

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C

Heart is ventral

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D

Central nervous system is ventral

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Solution

The correct option is D Central nervous system is ventral
Chordates are animals that belong to the phylum Chordata. During some period of their life cycle, chordates possess a notochord. Pharynx is perforated with gill slits. Heart is ventral and the central nervous system is dorsa not ventral.

In non-chordates the central nervous system is ventral.

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Similar questions

Q. How many of the following statements are true w.r.t. fundamental features of chordates?
(a) Pharynx is perforated by gill slits.
(b) Heart is dorsal (if present).
(c) Post-anal tail is absent.
(d) Notochord is absent.
(e) Central nervous system is dorsal, hollow and single.

Choose the correct option.

Q. The central nervous system is dorsal and hollow in case of ____ and ventral and solid in case of ____.

Q. Read the following statements and choose the correct options
I. Pelvic fins of female sharks bear claspers.
II. In Obelia polyps produce medusae sexually and medusae asexually.
III. Flame cells in platyhelmintes help in osmoregulation and excretion.
IV. In nonchordates, central nervous system is ventral, solid and double.
V. Pinnae are present in mammals.

Q. Which of the following is not an organ of the central nervous system?

Q. State whether the following statements are true or false.
The sternum is present on the ventral side of the body

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