Which of the following animals are true coelomates with bilateral symmetry ?
1. Adult Echinoderms
2. Aschelminthes
3. Platyhelminthes
4. Annelids
The contrasting characteristics generally in a pair used for identification of animals in Taxonomic Key are referred to as:
1. Lead
2. Couplet
3. Doublet
4. Alternate
Match the following cell structure with its characteristic feature:
| Column I | Column II | ||
| (a) | Tight junctions | (i) | Cement neighboring cells together to form 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) |
Which of the following statements is INCORRECT?
| 1. | Cockroaches exhibit mosaic vision with less sensitivity and more resolution |
| 2. | A mushroom-shaped gland is present in the 6th-7th abdominal segments of male |
| 3. | A pair of spermatheca is present in the 6th segment of female cockroach |
| 4. | Female cockroach possesses sixteen ovarioles in the ovaries |
Select the correct statement:
| 1. | Expiration occurs due to external intercostal muscles. |
| 2. | Intrapulmonary pressure is lower than atmospheric pressure during inspiration. |
| 3. | Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure. |
| 4. | Expiration is initiated due to the contraction of the diaphragm. |
The maximum volume of air a person can breathe in after a forced expiration is known as:
1. Expiratory Capacity
2. Vital Capacity
3. Inspiratory Capacity
4. Total Lung Capacity
All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?
| 1. | SA node has the lowest rate of depolarisation |
| 2. | SA node is the only component to generate the threshold potential. |
| 3. | Only SA node can convey the action potential to the other |
| 4. | SA node has the highest rate of depolarisation. |
A specialised nodal tissue embedded in the lower corner of the right atrium, close to Atrio-ventricular septum, delays the spreading of impulses to heart apex for about 0.1 sec.
This delay allows -
1. blood to enter aorta.
2. the ventricles to empty completely.
3. blood to enter pulmonary arteries.
4. the atria to empty completely.
Match the following parts of a nephron with their function:
| (a) | Descending limb of Henle's loop | (i) | Reabsorption of salts only |
| (b) | Proximal convoluted tubule | (ii) | Reabsorption of water only |
| (c) | Ascending limb of Henle's loop | (iii) | Conditional reabsorption of sodium ions |
| (d) | Distal convoluted tubule | (iv) | Reabsorption of ions, water, and organic nutrients |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | i | iii | ii | iv |
| 2. | ii | iv | i | iii |
| 3. | i | iv | ii | iii |
| 4. | iv | i | iii | ii |
Match the items in Column - I with those in Column - II:
| Column I | Column II | ||
| (a) | Podocytes | (i) | Crystallised oxalate |
| (b) | Protonephridia | (ii) | Annelids |
| (c) | Nephridia | (iii) | Amphioxus |
| (d) | Renal calculi | (iv) | Filtration slits |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (iv) | (ii) | (iii) | (i) |
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