The animal having the largest RBC is found in the order Anura.
Important Questions on Classification of Animal Kingdom
Which of the following statements are true for the phylum-Chordata?
(a) In Urochordata, notochord extends from head to tail, and it is present throughout their life.
(b) In Vertebrata, the notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata, and Cephalochordata.
Identify the wrongly matched Scientific and common name:
| Scientific name | Common name |
| a) Bungarus | Krait |
| b) Exocoetus | Flying fish |
| c) Trygon | Electric ray |
| d) Carcharodon | Dogfish shark |
| e) Myxine | Hagfish |
Statement (S) : The amphibian blood is composed of erythrocytes, leucocytes and thrombocytes. The thrombocytes help in haemostasis.
Reason (R): The haemostasis regulates the body temperature in poikilotherms.
Which of the following is true?
Observe the following simplified scheme and choose the correct option that matches with the letters given in the boxes.
Match the following
| List - I | List - II | ||
| (a) | Chelonia | (i) | Alligator |
| (b) | Rhynchocephalia | (ii) | Chameleon |
| (c) | Crocodilia | (iii) | Sphenodon |
| (d) | Squamata | (iv) | Testudo |
The correct answer is
Study the following and pick up the correct combinations.
| S.No | Class | Unique character | Flourished in |
| I) | Amphibia |
Buccopharyngeal respiration |
Carbonferous period |
| II) | Reptilia | Jacobson organs | Mesozoic era |
| III) | Mammalia | Pinna | Coenozoic era |
| IV) | Pisces | Meninx primitiva | Cretaceous period |
Statement I: Sternum appeared for the first time in amphibians.
Statement II: Snakes have pairs of cranial nerves.
The correct option among the following is
Which of the key adaptations helped evolutionary success of Reptiles on land?
A Warm-bloodedness
B. Pulmonary respiration and dry scaly skin
C. Internal fertilisation
D. Amniotic & Cleidoic eggs
Study the following table
| Group | Feature | Example | |
| Cyclostomata | Renal portal system is absent | Branchiostoma | |
| Reptilia | Megalecithal and cleidoic eggs | Tropidonotus | |
| Aves | Corpora quadrigemina | Psittacula | |
| Amphibia | Columella auris in middle ear | Rhacophorus |
Identify the correct combinations
Match the following
| List - I | List - II | ||
| (a) | Each half of the lower jaw is formed by 6 bones | (i) | Aves |
| (b) | Lacrimal and Harderian glands appeared for the first time | (ii) | Reptiles |
| (c) | Presence of only right systemic arch | (iii) | Amphibians |
| (d) | Each half of the lower jaw is made of single bone | (iv) | Mammals |
Name the classes of Tetrapoda that exhibit the following characters:
| Column (A) | Column (B) |
| Acrodont | Thecodont |
| pairs cranial nerves | pairs cranial nerves |
| Cold-blooded | Warm-blooded |
| Amphicoelous vertebrae | Amphiplatyan vertebrae |
