1. which of the following do chordates not have at any point in their lives? notochord pharyngeal gill pouches nerve cord none of the above

The correct answer would be none of the above.

Explanation:

Chordata has 5 major characteristics that they have at some stage in their lives, a dorsal tubular nerve cord, a notochord, pharyngeal gill slits, a post- tail, and a thyroid/endostyle gland.

The notochord is a flexible, rod-like structure that is present in the development stage of all chordates and reason for the name of the phylum. Nerve cord is rise from the ectoderm and develops into a hollow tube. pharyngeal gill slits let water enter and exit the mouth during feeding.

Thus, the correct answer would be none of the above.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

one centimetre is equal to 0.01 metres