In cockroach, a chitinous hard exoskeleton covers:
1. The head segment only
2. The head and the thorax segment only
3. The thorax and the abdomen only
4. The entire body
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In male cockroaches, the genital pouch is bounded by:
1. 9th and 10th terga dorsally and 10th sternum ventrally
2. 9th tergum dorsally and 9th and 10th sterna ventrally
3. 9th and 10th terga dorsally and 9th sternum ventrally
4. 9th and 10th terga dorsally and 9th and 10th sterna ventrally
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The genital pouch in female cockroach is formed by:
1. 7th, 8th and 9th tergites
2. 7th, 8th and 9th sternites
3. 8th, 9th and 10th tergites
4. 8th, 9th and 10th sternites
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Anal styles are borne on the:
1. | 9th segment only in female cockroach |
2. | 9th segment only in male cockroach |
3. | 10th segment only in female cockroach |
4. | 10th segment only in male cockroach |
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Which of the following mouth parts of cockroach are paired?
1. | Labrum | 2. | Labium |
3. | Hypopharynx | 4. | Maxilla |
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Presence of intercalated discs help cardiac muscles to act as a functional syncytium. This is possible because the structure of these discs have:
1. | Tight junctions | 2. | Gap junctions |
3. | Adhering junctions | 4. | Plasmodesmata |
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Identify the incorrect statement regarding the parts labeled in the following diagram:
1. A is the perimysium
2. B is the structural unit of skeletal muscle
3. C is epimysium
4. D is the endomysium
In the given schematic diagram of ultrastructure of a myofibril, the functional unit of muscle contraction is shown by the letter:
1. A | 2. B |
3. C | 4. D |
The following histology section depicts the structure of:
1. Skeletal muscle |
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Which of the following is not true for connective tissue?
1. Cells lie embedded in the matrix
2. Glycosaminoglycans and proteoglycans are present in ground substance
3. All connective tissues are fibrous
4. Connective tissues are derived from the mesenchyme
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