Cockroach

Question 1

Colour
If food not available
Originated word
Belongs to
Other colours

Answer 1

Brown or black bodies
Cannibalism = then own species eaten as food
.from Spanish word “ cucaracha “
Tropical climate of Africa
Bright yellow , red ‘ green reported in tropical regions

Question 2

Temperate, speed
Chromosome no
Size ranges
About ( mm) along with

Answer 2

On 25°C run 130cm/ sec
34
1/4 inches to 3 inches [ 0-6 - 7.6cm)
About 34to 53 mm long with wings that extend beyond the tip of abdomen in males

Question 3

Phylum
Class
Subclass
Order
Genus
Blatta
Smallest cockroach

Answer 3

Arthropoda
Insecta = largest class
Pterigota [ two pairs of wings)
Orthoptera = wings dissimilar type
Periplaneta America
Blatta orientalis / oriental cockroach
Blattella Germanica

Question 4

Cock roach is, nutrition
Cursorial
Body divided called
Head embryo
Thorax
Abdomen
Total

Answer 4

Nocturnal, omnivores
Fast runner and less capacity of flight
Into 3 parts called tegmeta
6 segment
3 segment
11 segment
20

Question 5

Adult head
Thorax
Abdomen
Fused total segments
Exoskeleton sclerites
Sclerites dorsal
Ventral
Lateral
Arthrodial / article sclerites

Answer 5

1
3
10
6 segments fused total 14 segments
Exoskeleton of chitin plates occurred in each segment. Chitin plates called scleritis
Tergun or tergite
Sternum or sternite
Pleurons or pleurites
Selenites joined each other by membrane called

Question 6

Bent down words at 90° from long axis
Head capsule.
Vertex, chitin plate
Fn as photoreceptor organ

Answer 6

Hypognathus condition
Formed by fusion of six segment
Top part of head, on vertex a citing plate called occiput
Simple eye - fenestra or ocellar

Question 7

Lateral side of head apex bear
Frons / forehead
Clypeus
Gena / cheek
Tongue

Answer 7

1 pair of antennae = long filliform un branched and have sensory receptors that help in
Monitoring environment . Free moving
Big chitin plate situated below the vertex
Big chitin plate present in anterior parts of front
2 long flattened child in plates situated on lateral side
Hypopharynx / lingua = small non chitin’s flexible structure on floor of preoral

Question 8

Occipital foreman. Joined with head
Mouth parts
Upper lip
Jaw
First maxillae
Fn also
Second maxillae

Answer 8

A big pore situated in ventral part of head . Neck joined with head
Situated in anterior side of head which surrounded by many chitinous structure
Labrum = broad and flattened terminal selenite of dorsal side of head. Capsule
Mandibles =1 pair, form lateral wall of preoral cavity
Same above
Pickup its food and for chewing, also used as brush to clean antenna & wing
Labium = lower lip = form floor of prevail cavity, cover ventralside

Question 9

Short extension of prothorax
Legs no
Coxa
Trochanter
Femur
Longest segment
Tarsus
Claws
Move on smooth surface ( absent in )
Climb wall

Answer 9

Neck
1 pair of legs present in each segment of thorax ( total 6 )
Broadest segment
Small segment
Long segment
Tibia
5 subsegments called torment
Move on rough surface
Arolium, / pulvilus. ( blatta)
Plantuli , arolium

Question 10

Wings
Fore wings appearance
So long
Called
Hind wing appearance
Fn

Answer 10

2 pair wing
On mesothorax leathery, opaque, dark, strong
Cover fu!! Abdomen
Elytra / tegmina
On metathorax transparent, membranous
Help in flight

Question 11

Total segment.
Obi . Seen
Largest
Cover
Stink gland
10 th ,,, sound receptor
Sternum

Answer 11

10
Male = 9th female:: 7 th
7 Targum in in both
Cover 8 th in male and in female 8 and 9
B/w 5th and 6th
Bowl shaped and bifurcated = anal cerci
9= male, 7= female

Question 12

Female 7th
Hypodermis = oenocyte
Trichogen
Tormogen
Blood
True coelom

Answer 12

Special type of boat shaped
Wax secreting cell
Seta forming cell
Socket forming cell
Haemolymph
Cavity of gonads

Question 13

Fore gut
What present in inner side
Opens
Buccal cavity opens in
Pharynx open
Crop
Crop open

Answer 13

Stomodeum = ectodermal
Cuticle present in inner side of foregut
Mouth to gizzard is foregut mouth open in small buccal cavity
In tubular pharynx
Open near occipital foremen in oesophagus
In thorax desophagus expand. And called
Into third walled gizzard / proventriculus

Question 14

Wall of gizzard
Occur in cavity
Fn
Sieve
Upper part of gizzard
Lower

Answer 14

Circular muscle layer well developed
Six cuticular teeth = made up of longitudinal muscle layer & sharp cuticle
Fore grinding of food. Occurs with help of cuticular teeth
Cuticular hairs +nt in posterior port
Grinding
Filtration

Question 15

Midgut
Gizzard open
Hepatic caeca (no)
Present
Fn

Answer 15

Mesenteron = endodernal
In cardia by stomodial value
6-8 small and tubular finger like blind processes / gastric caecae
At junction of foregut and midget
Secrete digestive juice

Question 16

Hind gut. Broader than
Malpighian tubules(colour) , junction
Ileum
Colon
Rectum
Anus

Answer 16

Proctodeum = ectodermal Than midget
100 - 150 yellow coloured thin tubules attached at auction of hind gut and midgut
Cuticle bears minute spines which serve to break the peritrophic membrane
Longest and broader part
Its wall having 6 fold - called rectal papillae [absorb water)
At 10th abdominal segment

Question 17

Salivary gland
Open ,
Saliva contain
Identification of food
Wall of cardia
Digestion completes
Absorption

Answer 17

1 pair attached with desophagus and occur in thorax
In preoral cavity at base of hypo pharynx
Carbohydrate digestive enzyme eg amylase, chitinase , cellulose
By help of antenna
Secreted around food called peritrophic membrane glycogen + protein
Anterior part of Midgut
Posterior part of mid gut

Question 18

Respiratory organ
Spiracles
Total no ; thorax , abdomen
On the
First pair of spiracle of abdomen situated on

Answer 18

Respiratory tubules or trachea
Network of tubules open out side, the body by the
l0 pair [2 pair - thorax, 8 pair abdomen)
Pleurae laterial side
On lateral side of Tergum

Question 19

Valve absent
Each spiracule open
Tracheal capillaries closed
Fn
Tracheoles
In blood
Help in blood flow

Answer 19

In 1 pair spiracles of thorax and abdomen
Chamber called atrium / tracheal chamber
In cell called tracheal end cell
Long process found
Exchange of gases take place at tracheoles by diffusion
Respiratory pigment absent
Several tergo - sternal muscles

Question 20

Inspiration
Expiration
Expiration takes place through
Opening of spiracles
Spiracular valve fn

Answer 20

Abdomen expand
Abdomen contract
First pair of spiracles of thorax and first pair spiracles of abdomen
Regulated by sphincters
Control and regulate the in and out passage of air in thorax and abdomen

Question 21

Circulatory system is
Blood vessels
Bathed in blood
Haemolymph
Heart consists of

Answer 21

Open type
Are poorly developed and open into space [haemocoel)
Haemolymph Visceral organ located in halmocoel .
Composed of colourless plasma and hoemocytes ( phagocytosis of bacteria, blood clotting)
Of elongated muscular tube lying along mid dorsal line of thorax & abdomen

Question 22

Heart is differentiated in to
Blood flow
Fenestrae
Heart chambers
Alary muscles

Answer 22

Funnel shaped chambers with Ostia on either side
Blood from sinuses enter heart through Ostia and is pumped anteriorly to sinuses again
Both diaphragms have pores
13
12-pair fan like muscles present in PCS

Question 23

Each tubule [excretory organ) lined by
Fn
Insect is
Also help in excretion
Fn

Answer 23

Is lined by glandular and ciliated cells
Absorb nitrogenous waste product and convert them into unit acid which is excreted out-through hind gut
Uricotelic
Fat body, nephrocytes, uricose gland
Nephrocytes = storage excretion
Uricose gland = help in execution in male cook roach

Question 24

Nervous system of cockroach ( ganglia joined by )
Ganglia thorax
Abdomen
Body
Along
Brain represented by
Fn

Answer 24

Consists of series of fused segmentally arranged ganglia joined by paired longitudinal connected on ventral side
3
6
Nervous system is spread through out the body
The ventral (belly side of body
Supra- oesophageal ganglian
Which supplies nerve to antenna and compound eye

Question 25

Nerve
Compound eye
Antenna
Head
end of head
Central nerve ring

Answer 25

Optic nerve
An teary nerve
Circum oesophageal connective
Sub oesophageal connective
Nerve ring + nerve chord

Question 26

Compound eye situated in
Compound eye made up
Form in night
Sense organs

Answer 26

At the dorsal surface of head
Of 2000 units called ommatidia hexagonal
Mosaic vision form [ more sensitivity but less resolution ]
Antenna E. Eyes, maxillary palps labial palps anal cerci

Question 27

Testis
Vasa deferentia
Ejaculatory duct
Seminal vesicles
Accessory reproductive gland ( shape ,segment)
Phallomeres

Answer 27

1 pair in 4 - 6 abdominal segment
Asrises from each testis which open in ejaculatory duct through seminal vesicle
Opens outside by male genital pore
Junction of vasadeferential and ejaculatory duct
A gland associated with seminal resides called mushroom shape gland present in 6th & 7th abdominal segment
Gonapophysis . Chitinous structure associated with phallic aperture ( phallic gland opening) and male genital pore .

Question 28

External genitalia
Structure fn
Seminal vesicles fn
Spermatophore
Double layered
Three layered

Answer 28

Are represented by male gonapophysis or phallomere
Chitin’s asymmetrical structure surrounding the male gonopore
Sperms are stored
Sperms are glued together in form of bundles which are discharged during copulation
Ejaculatory duct
Phallic gland

Question 29

Ovary
Ovarioles no
Total ova
Vagina
Opens
Ootheca
Colour long

Answer 29

1 pair of Avery situated in 2nd to 6th segment of abdomen
Each ovary is made up of ./ ovarian tubules 8
16 ova are matured at time in cockroaches
Oviducts of each ovary unite [ single median oviduct
In a genital chamber
Fertilised egg are encased in capsules
Dark reddish to blackish brown capsule about 3/8 inches (8mm) long

Question 30

Female produce _______ othercae containing ________
Nymph
Appear like
Grows
Development

Answer 30

9-10 othecae each containing 14 - 16 eggs
Juvenile stage inside otherca
Adult except for wings and reproductive organs
By moulting about 13 times to reach adult form
Paurometabolus

Question 31

Female brood / genital pouch
Malle genital pouch/ chamber lies

Answer 31

7th, 8th, 9th sternum whose anterior part contains female gono pore, spermathecal pore
Collateral glands
Ot hind end of abdom en bounded dorsally by 9th, 10th term and centrally by 9th sternum. Contain dorsal anus, ventral male, genital pore, gonapophysis

Question 32

Ootheca formed by

Answer 32

Collateral gland