Structural Orga...

In the following diagram of a leg of Cockroach parts have been indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate

Which of the following statements is correct regarding cockroach?

Which of the following is correct for the common Cockroach?

About how many times does the nymph of Periplaneta americana undergo moulting before becoming an adult?

Select the correct statement from the ones given below with respect to Periplaneta americana

Which of the following figures shows the mandibles of cockroach?

In cockroach, the ootheca is formed by the secretion of 

The given figure shows alimentary canal of cockroach. Identify the parts labelled as A to D and select the correct option.

In the mouth parts of a cockroach, the labium forms _______ (i) while _____ (ii) acts as a tongue.

Consider the following four statements (i) - (iv) and select the correct option stating which ones are true (T) and which ones are false (F).
(i) In male cockroach, genital pouch or chamber lies at the hind end of abdomen bounded dorsally by 9th and 10th terga and ventrally by the 9th sternum
(ii) In cockroach, the haemolymph is composed of colourless plasma and haemocytes
(iii) In female cockroach each ovary is formed of a group of ten ovarian tubules or ovarioles, containing a chain of developing ova
(iv) In cockroach the nymph grows by moulting about 6-13 times to reach the adult form

Read the following statement having two blanks A and B in cockroach, a ring of 6 - 8 blind tubules called ______(A) is present at the junction of foregut and midgut while at the junction of midgut and hindgut a ring of 100 - 150 yellow coloured yellow coloured thin filamentous _______(B) is present.

Read the following statements about cockroach
(i) In male cockroach, a characteristic mushroom shaped gland is present in the 6th and 7th abdominal segments which junctions as an accessory reproductive gland.
(ii) Cockroach is uricotelic
(iii) The fat body and uricose glands are glandular in function
(iv) Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again
Which of the above statements are correct?

Study the given figure of reproductive system of male cockroach.
In which of the labelled parts are the sperms stored?

Which one of the following is the correct combination?

The development of Periplaneta americana is