Cockroach

Author:Subject Experts
NEET
IMPORTANT

Important Questions on Cockroach

HARD
IMPORTANT

Match the following with reference to cockroach and choose the correct option.

Section A

Section B

A. Phallomere

(i) Chain of developing ova

B. Gonopore

(ii) Bundles of sperm

C. Spermatophore duct

(iii) Opening of the ejaculatory

D. Ovarioles

(iv) The external genitalia 

EASY
IMPORTANT

Each thoracic segment of Periplaneta americana is enclosed by four ________ skeletal sclerites: a dorsal________, a ventral______, and two lateral _____ . The _________ of the prothorax is also called pronotum, which covers the neck and a part of the head.

Complete the above paragraph by selecting the correct sequence of words.

MEDIUM
IMPORTANT

Refer to the given figure showing reproductive system of female cockroach.

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Identify the parts labelled as P, Q, R and S and select the correct statement regarding these.

HARD
IMPORTANT

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 cockroaches, the haemolymph is composed of colourless plasma and haemocytes.
(iii) In a 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 13 times to reach the adult form.

  A B C D
(i) F T F T
(ii) F F T T
(iii) T T F T
(iv) T F T F

EASY
IMPORTANT

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

MEDIUM
IMPORTANT

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

MEDIUM
IMPORTANT

Read the following statements about cockroach.
(i) In male cockroach, a characteristic mushroom shaped gland is present in the 6th-7th abdominal segments which functions 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?

EASY
IMPORTANT

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

EASY
IMPORTANT

Read the given paragraph.
"It is lined by glandular and ciliated cells. It absorbs nitrogenous waste products from haemocoel and convert them into uric acid which is excreted out through the hindgut."
Which of the following part of cockroach is referred here?

EASY
IMPORTANT

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 thin filamentous __ (B) __ is present. The one correct option that fills the two blanks is

  A B
(i) Malpighian tubules Hepatic caeca
(ii) Fat bodies Vasa efferentia
(iii) Hepatic caeca Malpighian tubules
(iv) Vas deferens Fat bodies

MEDIUM
IMPORTANT

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

The given figure represents a posterior region of a male cockroach. Identify the parts labeled as A, B, C, and D.

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