Q. No.Which one of the following characteristics is incorrect with respect to cockroaches?
1.
In females, 7th - 9th sterna together form a genital pouch.
2.
10th abdominal segment in both sexes, bears a pair of anal cerci.
3.
A ring of gastric caeca is present at the junction of midgut and hind gut.
4.
Hypopharynx lies within the cavity enclosed by the mouth parts.
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Identify the types of cell junctions that help to stop the leakage of the substances across a tissue and facilitation of communication with neighbouring cells via rapid transfer of ions and molecules.
1. Adhering junctions and tight junctions, respectively.
2. Adhering junctions and gap junctions, respectively.
3. Gap junctions and adhering junctions, respectively.
4. Tight junctions and gap junctions, respectively.
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Consider the following four statements (A-D) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F).
Statements:
| (A) | On dry land, it would die due to lack of O2 if its mouth is forcibly kept closed for a few days |
| (B) | It has a four-chambered heart |
| (C) | On dry land, it turns uricotelic from ureotelic |
| (D) | Its life history is carried out in pond water |
| (A) | (B) | (C) | (D) | |
| 1. | F | T | T | F |
| 2. | T | F | F | T |
| 3. | T | T | F | F |
| 4. | F | F | T | T |
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Ureters act as urinogenital ducts in:
1. frog's males
2. human males
3. human females
4. frogs, both males and females
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Identify the incorrectly matched pair:
|
|
Type of epithelium |
Location |
|
1. |
Transitional |
Urinary bladder |
|
2. |
Simple cuboidal brush bordered |
PCT of nephron |
|
3. |
Simple columnar ciliated |
Fallopian tube |
|
4. |
Simple squamous |
Surface of ovary |
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The fallopian tubes are lined with:
1. Simple cuboidal ciliated epithelium
2. Simple columnar ciliated epithelium
3. Simple cuboidal brush bordered epithelium
4. Simple columnar brush bordered epithelium
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Match the following columns with reference to cockroach and select the correct option :
| Column - I | Column - II | ||
| (a) | Grinding of the food particles | (i) | Hepatic caeca |
| (b) | Secrete gastric juice | (ii) | 10th segment |
| (c) | 10 pairs | (iii) | Proventriculus |
| (d) | Anal cerci | (iv) | Spiracles |
| (v) | Alary muscles |
| (a) | (a) | (a) | (a) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iv) | (iii) | (v) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (i) | (iv) |
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Select the correct statement from the ones given below with respect to Periplaneta americana.
1. Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives
2. Males bear a pair of short thread like anal styles
3. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
4. Grinding of food is carried out only by the mouth parts
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