For the metamorphosis of tadpoles which of the followingelements must be available in water?(a) chlorine (c) sulphur(b) carbon (d) iodine
Question
For the metamorphosis of tadpoles which of the followingelements must be available in water?(a) chlorine (c) sulphur(b) carbon (d) iodine
Solution
The correct answer is (d) iodine.
Here's why:
-
Tadpoles are the larval stage of amphibians, particularly frogs and toads.
-
During metamorphosis, tadpoles undergo significant physiological changes, including the development of lungs and the reabsorption of the tail.
-
One key hormone involved in this process is thyroxine, which is produced by the thyroid gland.
-
The production of thyroxine requires iodine. If iodine is not present in the water, the tadpole's thyroid gland cannot produce thyroxine, and the tadpole will not metamorphose into a frog or toad.
-
Therefore, for the metamorphosis of tadpoles, iodine must be available in the water.
Similar Questions
Assertion (A) -In Iodine deficient water, tadpoles do not metamorphosize into adult frogs.Reason (R) - Metamorphosis is not controlled by thyroxine.(a) Both A and R are true and R is the correct explanation of A.(b) Both A and R are true but R is not the correct explanation of A.(c) A is true but R is false.(d) A is false but R is true.
Which of the following is not in the life-cycle of a butterfly ?(A) Caterpillar (B) Eggs(C) Pupa (D) Tadpole
Pond water can contain many types of organisms. Which of the following are you most likely to find in a pond water sample?
Which of the following is incorrect(1)Whale-Lungs(2)Tadepole larva-Gills(3)Earthworm-moist skin(4)Spider-lungs
The important requirement of the aquatic life is___a) Dissolved Oxygen b) Dissolved Chlorinec) Dissolved Nitrogen d) Dissolved Methane
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.