Which is common between earthworm, leech and centipede?

• They have Malphigian tubules

• They are hermaphrodite

• They have ventral nerve cord

• None of the above

Sciatic vein of frog opens in

• heart

• kidney

• pelvic region

• liver

The female genital pore of Pheretima posthuma located upon the segment

• 14^th

• 16^th

• 18^th

• 15^th

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

The basic unit of classification is

• Species

• Genus

• Family

• Phylum

The stratified epithelium is found in

• Seminiferous tubule

• Fallopian tube

• Nasal cavity

• Kidney tubules

In cockroach, larval and nymphal characters are maintained by

• ecdysone

• salivary glands

• parotid gland

• juvenile hormone

Organisms who are able to freely interbreed producing fertile off-springs and having a similar blueprint for making these organisms are referred to as

• Species

• Tribe

• Genus

• Sub-genus

In most fungi, cell wall is chiefly made of

• Cellulose

• Chitin

• Protein

• Lipid

The blood of cockroach contains no respiratory pigment. It means that

• respiration is anaerobic

• cockroach does not respire

• oxygen goes directly into tissues by diffusion

• oxygen goes into tissue by intracellular capillary system