Question

Select the correct statement regarding reproduction.
(A) Mating in dogs is synchronised with the lunar cycle.
(B) Salamanders always have internal fertilisation
(C) in Trygon, the male introduces sperms into the female through a modified pelvic fin.
(D) Catla has internal fertilization.

Answer 1

Hint: A vast variety of plant and animal species have existed on the planet for many thousand of years. the method in living organisms that ensures this continuity is replica. A replica is one of the foremost characteristic features of living organisms. Life won't exist on the planet if plants and animals don't reproduce to form offspring.

Complete answer:
Sexual reproduction has the biological advantage of promoting genetic selection among the members of a species as a result of the offspring is that the product of genes contributed by each the oldsters. By creating doable the genetic recombination of inheritable traits of parents , reproduction provides rise to offsprings which will be higher ready to survive than parents
Now let us gather some information about given options:-
Mating in dogs is synchronised with the lunar cycle. :- lunar cycle is defined as changes in the nocturnal illumination that can change the change in sleep or wake cycle and also change in behaviour of the organism. But mating is not synchronised with this cycle
Salamanders always have internal fertilisation :- salamanders belong to amphibians . They are lizards like in appearance. They mostly have internal fertilisation but three of its families possess external fertilisation.
in Trygon, the male introduces sperms into the female through a modified pelvic fin. :- The male may be distinguished from the feminine, since the previous encompasses a combination of laborious elongated claspers connected to the girdle fins. The claspers facilitate in coitus. thus this selection is correct.
Catla has internal fertilization. :- catla is a freshwater fish. The fertilisation is external in this fish. They release eggs outside and then get mated with female gametes. So fertilisation takes place outside their body

Our required option is C that is Trygon, the male introduces sperms into the female through a modified pelvic fin.

Note:
Fertilization could occur within or outside the feminine body. Animals with external fertilization could or might not bear coupling however it's essential once the fertilization is internal as a result of the male gametes got to be placed on the point of the egg within the body.