Hypothesize an evolutionary relationship among the bipinnaria larva of echinoderms, larval and adult tunicates, and lancelets

The first stage in the larval development of most of the starfish is bipinnarial.It is usually followed by abrachiolaria stage.Its movement and feeding is accomplished by the bands of cilia.Starfish that breed their young generally lack a

bipinnaria stage, with the eggs developing directly into miniature adults.

Tunicates which are large group of marine animals , and their recent common ancestry with tadpoles is reflected in the tadpole-like larvae of most tunicates.They are also called as urochordates.

Fish like chordate,lancelet and amphioxi respire mostly through the skin.The use of gill slits for feeding rather than respiration is characteristic of the lower chordates.

preservation because he preserves part of the land and preserves means save

explanation:

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.