Find the incorrect match.
Junction of midgut and hindgut- Malpighian tubules
Gizzard- Chitinous plates
Crop- chemical digestion of food
Gastric Caeca- digestive juice
Gastric Caecae of cockroach is
Secrete digestive juice
10-12 blind tubules
Present at the junction of midgut and hindgut-
More than one option is correct
Malpighian tubules of cockroach is
At the junction of midgut and hindgut
Thin filamentous
Another ring of 200-250
Not all but any two are correct
Hindgut in cockroach is
Broader than midgut
Has two parts ileum and rectum
Rectum opens into blind sac
Blood vascular system of cockroach is
Open type
Haemocoel is present
Haemolymph bathes the visceral organs
All are correct
Choose the incorrect option from the following-
Heart of cockroach
Has elongated muscular tube
Lying along mid ventral line of thorax and abdomen
Has closed funnel shaped chambers with ostia on either side
All the above
Which of the following statements is wrong?
Spiracles are regulated by sphincters in Cockroach.
Tracheoles is the place for gaseous exchange
There will be 10 pairs of spiracles
Tracheoles divide into tracheal tubes
Malpighian tubules have which type of cells?
Glandular and ciliated
Only Glandular
Only ciliated
Keratinised cells
Alongwith Malpighian tubules which organs help in excretion in Cockroach?
Fat body, Nephrocytes, gastric caeca
Nephrocytes, Urecose gland
Fat body, Nephrocytes, Urecose gland
Urecose gland and fat body
The nervous system of cockroach is made up of a series of ganglia which are joined by
Paired lateral connectives
Single longitudinal connectives
Paired longitudinal connectives
Single horizontal connectives
The abdomen has ….. while thorax has ……... ganglia
Six, three
Nine, six
Three, two
Two, one
The brain of cockroach has nervous system which supply to-
Antennae and compound eyes
Antennae and hypopharynx
Antenaae, compound eyes and hypopharynx
Only compound eyes
Among the following organs which ones are not sense organs:
Antennae, maxillary palps, mandibular palps, labralpalps, labial palps and anal cerci
Mandibular palps, labralpalps
Anal cerci and maxillary palps
Maxillary palps and mandibular palps
Anal cerci and labial palps
Ommatidia are not
Hexagonal
2000 in a cockroach
Multiple images of an object
All are correct with respect to ommatidia of cockroach
Mosaic vision does not possess which character
More sensitivity
More resolution
Nocturnal vision
Male reproductive system of cockroaches has not
A pair of testes on lateral side in 4th and 6th segment of abdomen
Paired ejaculatory ducts
An accessory reproductive gland which is mushroom shaped in 7th abdominal segment
Phallomeres are chitinous asymmetrical Structures surrounding the male gonopore
At the time of copulation in Cockroach
Sperms are discharged
Spermatophores are discharged
Spermatheca are discharged
Spermatozoa are discharged
Female reproductive system of cockroaches has
Ovaries lie ventrally in the 2nd to 6th abdominal segments
Total 8 ovarian tubules or ovarioles
Vagina also known as single median oviduct
A spermatheca is present in the 6th segment
Oothecae
Dark yellowish capsule
Around 8 cm long
Dropped near a food source with high humidity
14-16 in number
How many molting will be observed in the case of female cockroaches for 20 eggs thinking that all will be converted in adults?
260
120
130
660
Nymph of cockroaches
A larval stage
Undergo 18 molting
Have wing pads in all stages
Proof of paurometabolous Development
If during development of P. americana total 39 molting were observed of different sequential stages, then how many eggs were there?
3
13
6
9
Cockroaches are
Vector for bacterial disease
Of no economic importance
Bisexual
Vestibulum is a part of
Genital chamber of female cockroach
Genital pouch of female cockroach
Both a and b
Rudimentary part of female circulatory system in cockroach
Which of the following connects the cytoplasm of adjoining epithelial cells?
Tight junctions
Adhering junctions
Gap junctions
All of these
How many pairs of spiracles are found in cockroach?
10
20
5
25
The process through which air in tracheoles and dissolved gases in blood are exchanged is
Osmosis
Diffusion
Active transport
Facilitated diffusion
Assertion : The development in cockroach is heterometabolous metamorphosis.
Reason : Young ones resemble the adults in all characters.
Assertion : Muscle fibres are said to be contractile in nature.
Reason : Cells of muscle tissues can shorten forcefully and again return to the relaxed state.
Assertion : Blood can be coagulated by adding oxalate (Sodium or Potassium Oxalate) to it.
Reason : Oxalate depresses the action of anticoagulant present in the blood.
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