Q. No.In male cockroach, anal styles arise from
1.
7th abdominal segment
2.
9th abdominal segment
3.
10th abdominal segment
4.
4th & 5th abdominal segment
Mark the statement that is incorrect for central nervous system of cockroach
| 1. | In the head region, the brain is represented by Supraesophageal ganglia which supply nerves to antennae and compound eyes |
| 2. | If the head of the cockroach is cut off, it will die immediately as the head holds a large part of the nervous system |
| 3. | The sub oesophageal ganglion supplies nerves to labium, maxilla and mandibles |
| 4. | Double ventral nerve cord of cockroach contains three thoracic and six abdominal ganglia |
Match the following
| Column - I | Column - II | ||
| a. | Squamous epithelium | (i) | Protection against chemical and mechanical stresses |
| b. | Cuboidal epithelium | (ii) | Movement of particle in a specific direction |
| c. | Compound epithelium | (iii) | Formation of diffusion boundary |
| d. | Ciliated epithelium | (iv) | Secretion and absorption |
1. a(i), b(iv), c(ii), d(iii)
2. a(iii), b(iv), c(i), d(ii)
3. a(ii), b(i), c(iii), d(iv)
4. a(iv), b(i), c(iii), d(ii)
Digestive system of cockroach is not characterised by
| 1. | A muscular gizzard provided with six cuticular teeth in armarium |
| 2. | Presence of twenty blind glandular hepatic caeca at posterior end of mesenteron |
| 3. | Presence of six rectal papillae helping in absorption of water and salts |
| 4. | Presence of cuticular lining in foregut and hind gut |
Following are four statements A to D. Choose the option which includes a set of correct statements
| A. | In Periplaneta, males bear a pair of short, thread like anal styles which are absent in females |
| B. | In both sexes of Periplaneta, the 10th segment bears a pair of jointed filamentous structures called anal cerci |
| C. | In cockroach mesothoracic wings (fore wings) are transparent, membranous and are used in flight |
| D. | In female cockroach, there is a pair of mushroom glands |
Options:
1. A & C
2. B & C
3. A & B
4. C & D
Which of the following provides structural and functional link between the individual cells in epithelial tissues?
| 1. | Extracellular fluid which binds the various cells in the tissue together |
| 2. | Cell junctions |
| 3. | Connective tissue |
| 4. | Basement membrane |
Which of the following is mismatched?
| 1. | Squamous epithelium: Walls of blood capillaries and alveoli of lungs |
| 2. | Cuboidal epithelium: Tubular part of nephrons |
| 3. | Ciliated epithelium: Bronchioles, fallopian tubes |
| 4. | Columnar epithelium: Walls of blood vessels |
The following diagram shows blood vascular system of cockroach with certain labelled parts a, b & c. Which of the following statements is/are incorrect regarding this system?
| A. | The blood vascular system of cockroach is of open type with well developed blood vessels which open into space (haemocoel). |
| B. | The haemolymph is composed of colourless plasma and haemocytes. |
| C. | The labelled part 'a' represents anterior aorta emerging from first chamber of heart bearing ostia on either side. |
1. C only
2. B & C
3. A only
4. All of the above statements are correct
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
Given below is a diagrammatic representation of a glandular tissue
Identify the structure labelled as 'A' and choose the correct option with respect to its example.
| 1. | Gastric gland | 2. | Goblet cells |
| 3. | Oxyntic cells | 4. | Sebaceous gland |
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