MCQ
The nephridia in earthworm are analogous to:
- AGills of Prawn
- BTrachea of insects
- CNematoblasts of Hydra
- DFlame cells of Planaria
Explanation:
A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms, rotifers and nemerteans. These are the simplest animals to have an excretory system. Flame cells function like a kidney, removing waste materials. Bundles of flame cells are called protonephridia.
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|
$P$ |
$Q$ |
|
$1.$ Nutrients (Macro and Micro) |
$a.$ Medium for enzymatic activities |
|
$2.$ Oxygen |
$b.$ Synthesis of protoplasm and act as a source of energy |
|
$3.$ Water |
$c.$ Releasing metabolic energy for growth activities |