- 1(current)
Q. No.
In cockroach, foregut comprises of
1. Pharynx, oesophagus, crop and gizzard
2. Mesenteron, crop and gizzard
3. lleum, colon and rectum
4. Pharynx, oesophagus and rectum
The respiratory system of cockroach consists of a network of trachea, that opens through _____(A)____ of small holes called ___(B)___ present on ___(C)____ side of body
Choose the option which correctly fills the blanks labelled as A, B and C
| Blank A | Blank B | Blank C | |
| 1. | 10 pairs | Spiracles | Dorsal |
| 2. | 8 pairs | Stigmata | Lateral |
| 3. | 10 pairs | Spiracles | Lateral |
| 4. | 8 pairs | Spiracles | Ventral |
Exoskeleton of each segment in cockroach consists
1. Dorsal tergum and a ventral sternum
2. Dorsal sternum and a ventral tergum
3. Sternum only
4. Tergum only
Thin tubes that carry oxygen from the air to all the parts in cockroach constitute
1. Tracheal system
2. Haemolymph
3. Lungs
4. Gills
Which of the following statements is wrong?
| 1. | Spiracles are regulated by sphincters in Cockroach. |
| 2. | Tracheoles is the place for gaseous exchange |
| 3. | There will be 10 pairs of spiracles |
| 4. | Tracheoles divide into tracheal tubes |
Which of the following is correct with respect to cockroach?
a. Internally mesenteron is lined with cuticle
b. In abdomen eight pair of spiracles are present
c. All sperms of seminal vesicle are glued together into spermatophore
d. Malphigian tubules are present at the junction of midgut and hindgut
1. a, b & c
2. a & b
3. b & d
4. b, c & d
Consider the following statements A, B, C & D with certain blanks. Find the option which correctly fills up these blanks
| A. | The ootheca of cockroach is about __(i)____ long. |
| B. | The development of P americana is ___(ii)___, meaning there is development through ___(iii)____ stage. |
| C. | In the head region of cockroach, the brain is represented by ___(iv)___ ganglion, which supplies nerves to antennae and ____(v)___. |
| D. | The respiratory system of cockroach consists of a network of trachea, that opens through ____(vi)____ of small holes called spiracles present on the ____(vii)____ side of the body. |
B - (ii) Paurometabolous
(iii) Nymphal
C - (iv) Supra-oesophageal
(v) compound eyes
2. B-(ii) Paurometabolous
C-(iv) Supra-oesophageal
(v) wings
D -(vi) 10 pairs
(vii) Lateral
3. A - (i) 8 mm
C - (iv) Sub-oesophageal
(v) Compound eyes
D - (vi) 10 pairs
(vii) Dorsal
4. A - (i) 8 mm
B - (ii) Paurometabolous
(iii) Nymphal
C - (iv) Supra-oesophageal
(v) compound eyes
D - (vi) 10 pairs
(vii) Lateral
- 1(current)
Q. No.
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