Fishes that lay eggs, wherein the embryos inside the egg grow and hatch outside the mother’s body are called oviparous.

D. The embryos receive nourishment directly from the mother’s body.

During the early stages of an amphibian’s life cycle, the tadpoles are either filter feeders or herbivores.

D. I and III only

The two nonvertebrate chordates include tunicates and lancelets.

B. I and II only

Fishes have a single circuit circulatory system. It only has one atrium and one ventricle. On the other hand, an amphibian has three chambers that include two atria (left and right) and a single ventricle. The blood goes into two circuits.

B. has a heart with one atrium

Caecilians are members of the order Apoda. They are legless amphibians that live in water or in moist soil or sediments.

D. caecilian

The legless amphibians that live in water or soil are called caecilians. They are members of the order Apoda.

E. Caecilians

Lancelets, which are from the subphylum Cephalochordata, are fishlike creatures that lack a true heart and a jaw. They are also known for their thin body surface.

B. Lancelets

Lancelets are members of the subphylum Cephalochordata.

B. Lancelets

Fishes have acquired a pair of fins, scales, gills, and jaws as they evolved over time.

C. Fishes

According to the table, the most number of frogs that was seen has occurred in the year 1999. There were a total of 63 frogs that inhabited the pond.

E. 1999

According to the results of the investigation, the number of frogs that inhabited the pond increased when the amount of rainfall went up.

D. The number of frogs in the pond increased as the amount of rainfall increased.