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

Subtopic:  Cockroach: Respiratory System |
 66%
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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

Subtopic:  Cockroach: Respiratory System | Cockroach: Excretory System | Cockroach:Male Reproductive System |
 78%
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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.

(1) A - (i) 3 mm

     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

Subtopic:  Cockroach: Respiratory System | Cockroach: Nervous System | Cockroach: Female Reproductive System |
 64%
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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

Subtopic:  Cockroach: Respiratory System |
 79%
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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

Subtopic:  Cockroach: Respiratory System |
 87%
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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

Subtopic:  Cockroach: Respiratory System |
 91%
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Thin tubes that carry oxygen from the air to all the parts in cockroach constitute

1. Tracheal system

2. Haemolymph

3. Lungs

4. Gills

Subtopic:  Cockroach: Respiratory System |
 86%
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In frogs, cloaca receives

1. Faecal matter

2. Gametes

3. Unine

4. All of these

Subtopic:  Cockroach: Respiratory System |
 94%
From NCERT
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Respiration in insects is called direct because

1. the cells exchange O2/CO directly with the air in the tubes
2. the tissues exchange O2/CO2  directly with coelomic fluid
3. the tissues exchange O2/CO2 directly with the air outside through body surface
4. tracheal tubes exchange O2/CO2 directly with the haemocoel with tissues which then exchange with tissues

Subtopic:  Cockroach: Respiratory System |
 65%
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Which one of the following is one of the paths followed by air/O2 during respiration in an adult male Periplaneta americana as it enters the animal body?
 
1. Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells
2. Mouth, bronchial tube, trachea, oxygen enters cells
3. Spiracles in prothorax, tracheoles, and trachea oxygen diffuses into cells
4. Hypopharynx, mouth, pharynx, trachea, tissues

 
Subtopic:  Cockroach: Respiratory System |
 63%
From NCERT
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