Morphology of Cockroach

Question 1

Scientific Name of Cockroach

Answer 1

Periplaneta americana

Question 2

Phylum of Cockroach

Answer 2

Arthropoda

Question 3

Class of Cockroach

Answer 3

Insecta

Question 4

Genus of Cockroach

Answer 4

Periplaneta

Question 5

Species of Cockroach

Answer 5

americana

Question 6

Common names of Cockroach

Answer 6

American cockroach
Bombay canary
Ship cockroach

For Periplaneta americana

Question 7

Common feature in both sexes of Cockroach

Answer 7

Wings are larger than the body

Question 8

Common names of Cockroach

Answer 8

Oriental cockroach
Black beetle

For Blatta orientalis

Question 9

Colour, Size, Wings

Features of Blatta orientalis

Answer 9

1. Black or dark brown.
2. Medium sized.
3. Female has rudimentary wings which are not helpful in flight.
4. Male has short wings and are not upto the end of the body.

Question 10

The body of the cockroach is ________

Answer 10

elongated and segmented.

Question 11

Color of the body of cockroach:

Answer 11

Dark brown or reddish brown.

Question 12

What is the exoskeleton made up of?

Answer 12

The exoskeleton is thick and hard and made up of chitinous plates called SCLERITES.

Question 13

The body of a cockroach is divided into ___ segments.

Answer 13

10

Question 14

The segments on the dorsal side are called __________.

Answer 14

TERGUM

Question 15

The segments on the ventral side are called __________.

Answer 15

STERNUM

Question 16

Features of the exoskeleton of cockroaches.

Answer 16

1. The exoskeleton is coated with wax impermeable to water.
2. Protects the body from loss of water.
3. Provides rigidity and surface for attachment of body muscles.

Question 17

The adjacent segments are joined by __________.

Answer 17

thin, soft and flexible arthrodial membrane.

Question 18

The body is divisible into?

Answer 18

Head, Thorax, and Abdomen

Question 19

How many pairs of jointed appendages does a cockroach have?

Answer 19

3 (three)

Question 20

How many pairs of wings does a cockroach have?

Answer 20

2 (two)

Question 21

Features of forewings of a cockroach.

Answer 21

1. Mesothoracic
2. Are called as wing covers, TEGMINA, or Elytra.
3. They cover the hindwings and are protective in function.
4. Dark, stiff, opaque, and leathery.

Question 22

Features of hindwings of a cockroach.

Answer 22

1. Large, thin, membranous, and transparent.
2. Kept folded below the tegmina.
3. Used for flying.

Question 23

What are nervures? What is their function?

Answer 23

• A network of slender and branched tubules, called veins or nervures is spread between the two layers of the cuticle.
• These tubules communicate with haemocoel. Hence, haemocoelomic fluid circulates in these tubules.
• An air tube or trachea and a fine nerve are also present in each nervure.