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Structural Organisation In Animals

Multiple Choice Questions

111.

In Pheretima, septa are absent between which segments?

3/4 and 9/10
4/5 and 8/9
5/6 and 7/8
7/8 and 6/7

112.

In cockroach, larval and nymphal characters are maintained by

ecdysone
salivary glands
parotid gland
juvenile hormone

113.

The female genital pore of Pheretima posthuma located upon the segment

14^th
16^th
18^th
15^th

114.

In frog heart, there are cardiac muscles which consists of fibres called

Purkinje fibres
myonemes
telodendria
columnae carnae

115.
Malphigian tubules are

excretory organs of insects

excretory organs of frog

respiratory organs of insects

endocrine glands of insects

excretory organs of insects

Malphigian tubules are the excretory organs of insects. It opens at the junction of midgut and hindgut (ileum). They absorb excretory substances from haemolymph and fat bodies. They are concerned with homeostasis, osmoregulation and excretion.

Respiratory organ of insects is tracheae, which opens outside by ten pairs of spiracles.

Endocrine glands of insects consist of corpora allata, corpora cardiaca and prothoracic gland that regulates metamorphosis through different hormonal secretion.

Excretory organs of frog is kidney, large urinary bladder and excretion is ureotelic.