Following is the diagram of mouth parts of cockroach
Which of the following labelled structures will help in grinding and chewing of food?
(1) A & D
(2) B & C
(3) A & C
(4) D & E
Mark the correct statement with respect to cockroach
(1) Haemolymph is composed of colourless
plasma and erythrocytes
(2) All the spiracles are always open in cockroach
(3) Haemolymph enters heart through ostia and is
pumped from posterior to anterior direction
(4) Haemolymph has no role in transportation of
nutrients and metabolic wastes
Following is diagrammatic representation of female
reproductive system of cockroach.
Find the right marking and function performed by
that part
(1) A Conglobate gland Converting of sperm
B Spermatheca Storage of sperm
(2) A Phallomere Covering around egg
B Titillator Opening of spermatophore
(3) A Vestibule Place to store fertilized eggs
B Spermatophore Storage of sperms
(4) A Collaterial gland From the wall of ootheca
B Spermatheca Storage of sperms in female
Match the following with respect to cockroach
Column l Column ll
a. Ovaries (i) segment
b. MUshroom gland (ii) segment
c. Testis (iii) segment
d. Ootheca number (iv)
(v) 9 10
(1) a(ii), b(iv), c(i), d(v)
(2) a(ii), b(iv), c(i), d(iii)
(3) a(i), b(iii), c(ii), d(v)
(4) a(iii), b(ii), c(i), d(iv)
Brood or genital pouch in female cockroach is
made by
(1) tergum
(2) saternum only
(3) , sternum
(4) sternum, tergum
Visual units that compose the compound eyes of
insects are called
(1) Osphradia
(2) Ommatidia
(3) Onchospheres
(4) Odontophore
The night vision of cockroach is
(1) More sensitivity but less resolution
(2) Less sensitivity but more resolution
(3) Both sensitivity and resolution are high
(4) Both sensitivity and resolution are low
The following are excretory structures in cockroach,
except
(1) Nephrocytes
(2) Urecose glands
(3) Fat body
(4) Conglobate gland
On an average female cockroach produces
number of ootheca, each containing eggs.
wall of ootheca is made up of Secreted by
glands
(1) A 9-10,
B 14-16,
C Scleroprotein,
D Collateial
(2) A 7-9,
B 9-10,
C Chitin,
D Collateial
(3) A 9-10,
B 14-16
C Cellulose
D Conglobate
(4) A 14-16,
B 9-10
C Scleroprotein,
D Phallic
If the head of the cockroach is removed, it may live for a few days because:
1. | The cockroach does not have a nervous system |
2. | The head holds a small proportion of the nervous system while the rest is situated along the ventral part of its body |
3. | The head holds 1/3rd of the nervous system while the rest is situated along the dorsal part of its body |
4. | The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen |