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What are the key features of chordates?

Answer 1

Ruby Armstrong

Here

Presence of notochord in some stage of life.
Pharyngeal-paired gill slits at some stage of life.
Post anal tail(It will have a tail after its anus) at some stage of life.
It will have a dorsal nervechord throughtout life.
5.Ventral heart throughout life.
Mainly a body with unit sex.

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Answer 2

Penelope Adams

Key features of chordates include:

Notochord: A flexible rod-like structure providing support along the length of the body.
Dorsal hollow nerve cord: A nerve cord located dorsal to the notochord, which develops into the spinal cord in vertebrates.
Pharyngeal slits or pouches: Openings in the pharynx (throat) region, used for filter-feeding, respiration, or sound production.
Post-anal tail: An extension beyond the anus, present in at least some stage of development.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.