Q. No.Goblet cells of alimentary canal are modified from:
1.
Columnar epithelial cells
2.
Chondrocytes
3.
Compound epithelial cells
4.
Squamous epithelial cells
Cuboidal epithelium with brush border of microvilli is found in :
1. Ducts of salivary glands
2. Proximal convoluted tubule of nephron
3. Eustachian tube
4. Lining of intestine
Select the incorrectly matched pair from the following:
1. Chondrocytes - Smooth muscle cells
2. Neurons - Nerve cells
3. Fibroblast - Areolar tissue
4. Osteocytes - Bone cells
Match the following cell structure with its characteristic feature:
| Column I | Column II | ||
| (a) | Tight junctions | (i) | Cement neighboring cells together to form a sheet |
| (b) | Adhering junctions | (ii) | Transmit information through chemicals to another cell |
| (c) | Gap junctions | (iii) | Establish a barrier to prevent leakage of fluid across epithelial cells |
| (d) | Synaptic junctions | (iv) | Cytoplasmic channels to facilitate communication between adjacent cells |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (iv) | (iii) | (i) | (ii) |
Frogs differ from humans in possessing:
1. thyroid as well as parathyroid
2. paired cerebral hemispheres
3. hepatic portal system
4. nucleated red blood cells
The cells lining the blood vessels belong to the category of:
1. Connective tissue
2. Smooth muscle tissue
3. Squamous epithelium
4. Columnar epithelium
Ureters act as urinogenital ducts in:
1. frog's males
2. human males
3. human females
4. frogs, both males and females
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 |
Which of the following statements wrongly represents the nature of smooth muscle?
| 1. | Communication among the cells is performed by intercalated discs. |
| 2. | These muscles are present in the wall of blood vessels. |
| 3. | These muscles have no striations. |
| 4. | They are involuntary muscles. |
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