Q. No.What is incorrect regarding Periplaneta americana?
1. Excretion by malpighian tubules
2. Hemolymph delivering oxygen to tissues
3. Paurometabolous development
4. Mosaic vision
Which among the following statements are incorrect about cockroach?
(1) Haemocytes lack respiratory pigment.
(2) Has 13 chambered heart on the ventral side of the body.
(3) Blood from sinuses enter heart through ostia.
(4) Has 10 pairs of spiracles present on lateral side of body.
Choose the incorrect option from the following-
Heart of cockroach
(1) Has elongated muscular tube
(2) Lying along mid ventral line of thorax and abdomen
(3) Has closed funnel shaped chambers with ostia on either side
(4) All the above
Frogs differ from humans in possessing
1. paired cerebral hemispheres
2. hepatic portal system
3. nucleated red blood cells
4. thyroid as well as parathyroid
Identify the incorrect statement regarding the blood vascular system of cockroach:
| 1. | Blood vessels are poorly developed and open into hemocoel |
| 2. | The hemolymph is composed of colourless plasma and hemocytes |
| 3. | Heart lies along the mid-ventral line of thorax and abdomen |
| 4. | Blood from sinuses enter heart through ostia |
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
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
Alary muscles play an important role in
1. Circulation of blood
2. Respiration
3. Body movement
4. Peristalsis
Match the following.
|
Column I |
Column II |
|
A. Hermaphrodite B. Direct development C. Chemoreceptor D. Blood gland in earthworm |
1. Produces blood cells and haemoglobin 2. Testis and ovary in the same animal 3. Larval form absent 4. Sense of chemical substances |
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 2 | 4 | 1 |
| 3. | 1 | 3 | 2 | 4 |
| 4. | 2 | 4 | 3 | 1 |
1. Hepato–pancreatic system
2. Hepatic portal system
3. Renal portal system
4. Hepato–cystic system
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