Question
Malpighian tubµles are
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects
Solution
A.
excretory organs of insects
Excretory organs of insects are called as malpighian tubules. They absorb excretory substances from haemolymph and fat bodies and pass into the proctodaeum. Uric acid is the excretory product of insects.
Trachea is the respiratory organ of insects. It opens outside by ten pairs of spiracles, present in thoracic and abdominal parts.
Endocrine glands of insects consist of corpora allata, corpora cardiaca and prothoracic gland. They regulate metamorphosis in insects through different hormonal secretion.
Excretory organ of frog is kidney.
