EASY
Earn 100

Identify the correct statement/s.
(a)Number of denticulate plates in the gizzard of cockroach is 8
(b)Number of denticulate plates in the gizzard of cockroach is 6
(c)Number of denticulate plates in the gizzard of cockroach is 2
(d)Number of denticulate plates in the gizzard of cockroach is 4

50% studentsanswered this correctly
Important Questions on Periplaneta americana (Cockroach)
MEDIUM
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:

MEDIUM
The cells of fat body of cockroach which contain symbiotic bacteria are:

EASY
In cockroach, thermoreceptor sensillae are present on

EASY
Identify the correct sequence of flow of circulation of blood in Periplaneta americana

MEDIUM
If the head of cockroach is removed, it may live for few days because

EASY
Match the following:
Cells of corpora adiposa of cockroach | Function | ||
Trophocytes | Symbiotic bacteria | ||
Mycetocytes | Store uric acid | ||
Oenocytes | Intra cellular digestion | ||
Urate cells | Secrete lipids | ||
Store food |
The correct match is

EASY
In the abdomen of Cockroach, the ventral nerve cord is absent in the following segments

EASY
In cockroach, if the sub-oesophageal ganglion is damaged, which part of the cockroach is affected?

MEDIUM
Identify the correct statement with reference to the nervous system of the cockroach:
a) The nervous system of cockroach is called as autonomic nervous system.
b) There are thoracic and abdominal ganglion.
c) Sub-oesophageal ganglion controls the movements of mouth parts.
d) The abdominal ganglion innervates the abdominal segment.
The correct answer is

MEDIUM
Cockroach has 'superposition vision'. This type of vision has the following characteristic features 'EXCEPT'

EASY
The following are the joints of each leg of a cockroach
I) Tibia
II) Coxa
III Tarsus
IV) Femur
V) Trochanter
Arrange these in order.

EASY
Thermoreceptor sensillae of cockroach are present on

EASY
Triangular joint in the leg of Periplaneta is

HARD
Explain the digestive system of Cockroach with the help of a labelled sketch.

EASY
Mark the incorrect statement regarding digestive system of cockroach.

EASY
Give the location of hepatic caeca in a Cockroach. What is their function?

MEDIUM
The hepatic caeca of cockroach produce digestive enzymes.

EASY
The hindgut of the cockroach is differentiated into the ileum, colon, and _____.

EASY
In cockroaches, digestive juice is secreted by the

MEDIUM
Select the option having correct matching parts of the digestive tract of cockroach -

