A typical reptilian heart is shown by the figure:
1. | 2. | ||
3. | 4. |
Given below are two statements:
I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
Select the most appropriate option:
1. I is correct but II is incorrect.
2. I is incorrect but II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.
Column-I | Column-II | ||
(a) | Exocoetus | (i) | Tympanum represents the ear |
(b) | Trygon | (ii) | Marine bony fish |
(c) | Salamandra | (iii) | Air sacs connected to lungs |
(d) | Aptenodytes | (iv) | Cartilaginous marine fish |
(a) | (b) | (c) | (d) | |
1. | (i) | (ii) | (iii) | (iv) |
2. | (iv) | (iii) | (ii) | (i) |
3. | (ii) | (iv) | (i) | (iii) |
4. | (i) | (iii) | (ii) | (iv) |
Column-I | Column-II | ||
a. | Three-chambered heart with one incompletely divided ventricle | (i) | Myxine |
b. | Jawless vertebrate with a cartilaginous vertebral column | (ii) | Chaetopleura |
c. | Soft, unsegmented body and has a structure that helps in both respiration and excretion | (iii) | Calotes |
d. | Ventral mouth, gills without operculum, and skin with placoid scales | (iv) | Scoliodon |
1. | a(i), b(ii), c(iii), d(iv) |
2. | a(iv), b(iii), c(ii), d(i) |
3. | a(ii), b(iv), c(i), d(iii) |
4. | a(iii), b(i), c(ii), d(iv) |
Column-I | Column-II | ||
A. | Vipera | (i) | Oil gland at the base of the tail |
B. | Columba | (ii) | Heterodont dentition |
C. | Scoliodon | (iii) | Crawling mode of Locomotion |
D. | Panthera | (iv) | Pelvic fins bear claspers in males |
1. | A(i), B(ii), C(iv), D(iii) |
2. | A(iii), B(i), C(iv), D(ii) |
3. | A(iv), B(ii), C(i), D(iii) |
4. | A(iii), B(iv), C(ii), D(i) |
Statement A: | Reptiles have a 3-chambered heart, except crocodiles which have a 2-chambered heart. |
Statement B: | Superclass Pisces shows single circulation as opposed to class Aves which shows double circulation. |
1. | Both statements are incorrect. |
2. | Only statement A is correct. |
3. | Only statement B is correct. |
4. | Both statements are correct. |
Assertion (A) : | The scales of reptiles and fishes are similar in origin. |
Reason (R) : | All the chordates lack kidneys. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Assertion (A) : | Reptiles are poikilotherms. |
Reason (R) : | Reptiles possess eggs with shells which helped them to adapt in land environment. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |