Question

Axoloti is the larva of
A. Ambystoma
B. Silkworm
C. Roundworm
D. Amphioxus

Answer 1

Hint: Axolotls, the larval stage of strongly linked tiger salamanders (A. tigrinum and A. mavortium), which are common in most of North America and rarely appear neotenic, should not be associated with waterdogs.

Complete Answer:
Axoloti is an amphibian, not a fish. Originally, the species was present in many lakes, such as the Xochimilco Lake that underlies Mexico City. Among amphibians, Axolotls are unique in that they reach maturity without being metamorphosed. Adults remain underwater and gilled, instead of growing lungs and taking them to the ground.

Now, let us find the solution from the options-
- Axolotl is Ambystoma, a larva of the Urodele Amphibia. The Axolotl larva is well known for the lifelong preservation of external gills. The appearance of external gills is a permanently preserved larval trait of Axolotl. It has three External Gill pairs and four Gill-slit pairs. It is also a striking distinctive attribute of the Axolotl larva to reach sexual maturity at the larval stage. The larvae of Axolotl have the ability to rebuild their missing limbs as well.
- Eggs are laid by the female silk moth, out of which hatch larvae named silkworms or caterpillars. Thus, option B is not the correct option.
- 10-14 days after cleavage, the first larva is created and is considered the rhabditiform larva, or first larva, and is not an infectious stage. It moults to become the second larva in another week, which is able to infect the host. Thus, option C is not the correct option.
- There are two larvae in the amphioxus, like Branchiostoma and one is Asymmetron. For both cephalochordates, the basic term lancelet, or amphioxus, is generally used. Thus, option D is not the correct option.

Thus, the correct answer is option (A) Ambystoma.

Note: The heads of the Axolotls are large, their eyes lidless. Their limbs are inadequate and have fingers that are long and slender. Males are known by their papillae-lined swollen cloacae, whereas females are notable by their larger bodies loaded with eggs.