During buccal respiration in frogs:
1.
The bucco-pharyngeal cavity is filled with air
2.
Gaseous exchange occurs through the lining of buccal cavity
3.
Both (1) and (2)
4.
Pulmonary respiration stops
Subtopic: Â Frogs: Anatomy (Respiratory System) |
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Level 1: 80%+
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Choose the correct statement for the blood circulation in frog's heart:
| 1. | The left artrium receives oxygenated blood from pulmonary veins |
| 2. | The right atrium receives deoxygenated blood through sinus venosus |
| 3. | Sinus venosus receives blood from vena cava |
| 4. | More than one option is correct |
Subtopic: Â Frogs: Anatomy (Circulatory System) |
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Level 1: 80%+
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Renal portal vein in frogs:
| 1. | Carry oxygenated blood |
| 2. | Carry blood from lower part of the body to kidney |
| 3. | Both (1) and (2) are correct |
| 4. | May bypass kidney and directly enter heart |
Subtopic: Â Frogs: Anatomy (Circulatory System) |
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Level 2: 60%+
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Read the following statements regarding venous system of frogs:
How many of the above statements are correct?
| (i) | Hepatic portal vein carries blood of alimentary canal and its glands to the liver. |
| (ii) | Pulmonary veins carry deoxygenated blood from lungs to left auricle. |
| (iii) | Vena cava carry deoxygenated blood from body parts to the heart. |
| (iv) | Renal portal veins carry blood from the hind limbs and gonads to the kidneys. |
| (v) | Special venous connections between the liver and intestine as well as the kidney and lower parts are present. |
| 1. | One | 2. | Four |
| 3. | Five | 4. | Three |
Subtopic: Â Frogs: Anatomy (Circulatory System) |
 50%
Level 3: 35%-60%
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The frog's blood:
| 1. | Is composed of corpuscles but lack plasma |
| 2. | Contains RBCs, WBCs and platelets or thrombocytes and plasma |
| 3. | Contains RBCs which are oval, biconvex and nucleated |
| 4. | Is related to more than one option mentioned above |
Subtopic: Â Frogs: Anatomy (Circulatory System) |
 55%
Level 3: 35%-60%
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Which of the following is incorrect for lymphatic system of frogs?
| 1. | Lymph is without RBCs and contain few proteins only |
| 2. | Lymph is colourless |
| 3. | Lymph is continuously produced from filtering of blood through capillaries into intercellular spaces |
| 4. | Lymph hearts are absent |
Subtopic: Â Frogs: Anatomy (Circulatory System) |
 55%
Level 3: 35%-60%
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Which of the following is true for the excretory system of frogs?
| 1. | Two ureters emerge from the kidneys of male frogs which act as urinogenital duct that opens into cloaca |
| 2. | In female frogs ureters and oviduct forms the urinogenital duct that opens into cloaca |
| 3. | Both (1) and (2) |
| 4. | Urinary bladder is present dorsal to the rectum which open into the cloaca |
Subtopic: Â Frogs: Anatomy (Excretory System) |
 66%
Level 2: 60%+
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Read the following statements for frog:
How many of the above statements are correct?
| (i) | They possess both neural and endocrine system |
| (ii) | They possess a central nervous system (Brain and spinal cord) and a peripheral nervous system (cranial and spinal nerves) |
| (iii) | They lack an autonomic nervous system |
| (iv) | They possess 10 pairs of cranial nerves arising from the brain |
| (v) | Stomach contains oxyntic glands, gastric glands, hepatic caeca, calciferous glands as well as collaterial glands |
How many of the above statements are correct?
| 1. | Two | 2. | Three |
| 3. | Four | 4. | Five |
Subtopic: Â Frogs: Anatomy (Nervous System) |
 65%
Level 2: 60%+
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Match the columns:
1. A - (i), B - (iii), C - (ii)
2. A - (ii), B - (i), C - (iii)
3. A - (iii), B - (i), C - (ii)
4. A - (i), B - (ii), C - (iii)
| Column-I | Column-II | ||
| A. | Fore-brain | (i) | A pair of optic lobes |
| B. | Mid-brain | (ii) | Cerebellum and medulla oblongata |
| C. | Hind-brain | (iii) | Olfactory lobe, paired cerebral hemisphere, unpaired diencephalon |
2. A - (ii), B - (i), C - (iii)
3. A - (iii), B - (i), C - (ii)
4. A - (i), B - (ii), C - (iii)
Subtopic: Â Frogs: Anatomy (Nervous System) |
 88%
Level 1: 80%+
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Select the correct statement for frogs:
| 1. | Ear acts as organ for hearing but not balancing |
| 2. | External ear is absent and only tympanum can be seen externally |
| 3. | These possess compound eyes |
| 4. | All of the above |
Subtopic: Â Frogs: Anatomy (Nervous System) |
 79%
Level 2: 60%+
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