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Q. No.Consider the given two statements:
I:
Birds have a four chambered heart and are warm blooded.
II:
Respiration in birds is by lungs that are connected to air sacs.
1.
I is correct but II is incorrect
2.
Both I and II are correct.
3.
Both I and II are incorrect.
4.
I is incorrect but II is correct.
Subtopic: Study of Aves & Mammals |
85%
Level 1: 80%+
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The most unique characteristic of mammals is the presence of:
| 1. a four chambered heart | 2. a single aortic arch |
| 3. homeothermy | 4. mammary glands |
Subtopic: Study of Aves & Mammals |
88%
Level 1: 80%+
Hints
Which of the following is an egg laying mammal?
| 1. Ornithorhynchus | 2. Macropus |
| 3. Macaca | 4. Balaenoptera |
Subtopic: Study of Aves & Mammals |
86%
Level 1: 80%+
Hints
Flying fox is a/an:
| 1. | Flightless bird |
| 2. | Limbless amphibian |
| 3. | Viviparous mammal |
| 4. | Economically important insect |
Subtopic: Study of Aves & Mammals |
77%
Level 2: 60%+
Hints
Birds are not characterized by:
| 1. | a fully ossified endoskeleton |
| 2. | pneumatic long bones |
| 3. | absence of crop and gizzard in the digestive tract |
| 4. | a dry skin without glands except the oil gland |
Subtopic: Study of Aves & Mammals |
76%
Level 2: 60%+
Hints
In birds:
| a: | the characteristic feature is the presence of feathers. |
| b: | forelimbs are modified into wings. |
| c: | flight is present in all members. |
| d: | hind limbs do not have scales. |
| 1. | Only (a) and (d) are incorrect |
| 2. | Only (c) and (d) are correct |
| 3. | (a), (b) and (c) are correct |
| 4. | Only (a) and (b) are correct |
Subtopic: Study of Aves & Mammals |
80%
Level 1: 80%+
Hints
Which of the following reptiles has a four chambered heart?
| 1. | Crocodile | 2. | Wall lizard |
| 3. | Turtle | 4. | Tortoise |
Subtopic: Study of Reptilia |
91%
Level 1: 80%+
Hints
In reptiles:
| I: | Body is covered by dry and cornified skin, dermal scales or scutes. |
| II: | External ear is not present and tympanum represents the ear. |
| III: | Scales are shed as skin cast in all members. |
| IV: | Fertilization is internal and development is direct. |
| 1. | Only II is correct | 2. | Only II and IV are correct |
| 3. | All are correct | 4. | Only I and II are incorrect |
Subtopic: Study of Reptilia |
Level 3: 35%-60%
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Which of the following is not a characteristic of Amphibians?
| 1. | Most have two pairs of limbs and tail is present in some. |
| 2. | Alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca which opens to the exterior. |
| 3. | Respiration is by gills, lungs and through skin. |
| 4. | The heart is two chambered with one atrium and one ventricle. |
Subtopic: Study of Amphibians |
77%
Level 2: 60%+
Hints
Identify the incorrect statement regarding bony fishes:
| I: | They have four pairs of gills which are covered by an operculum on each side. |
| II: | Due to the absence of air bladder, they have to swim constantly to avoid sinking. |
| III: | Skin is covered with placoid scales. |
| IV: | Mouth is mostly terminal. |
| 1. | Only II | 2. | Only II and III |
| 3. | Only I and IV | 4. | Only IV |
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Osteichthyes |
62%
Level 2: 60%+
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