MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following is incorrect about Aves? |
| A. | Scales are absent and skin is dry except at the one end there is an oil gland |
| B. | Endoskeleton is made of bones and they respire through lungs |
| C. | They have cold-blooded animals |
| D. | They are dioecious and oviparous |
| Answer» D. They are dioecious and oviparous | |
| 2. |
Which among the following is incorrect about Reptilia? |
| A. | These are cold-blooded animals with scales on them |
| B. | All of them have a three-chambered heart |
| C. | Kidneys are present for excretion |
| D. | These are oviparous |
| Answer» C. Kidneys are present for excretion | |
| 3. |
Which among the following is incorrect about organ system in Amphibia? |
| A. | In amphibians, blood passes the heart twice |
| B. | Left auricle deals with deoxygenated blood |
| C. | Ventricle deals with both oxygenated and deoxygenated blood |
| D. | Tympanum represents ears in amphibians |
| Answer» C. Ventricle deals with both oxygenated and deoxygenated blood | |
| 4. |
Which among the following is incorrect about Amphibia? |
| A. | They can live both on land and water |
| B. | They are warm-blooded animals |
| C. | They have three chambered heart |
| D. | They have gills/ lungs to respire |
| Answer» C. They have three chambered heart | |
| 5. |
Which among the following is incorrect about Tetrapoda? |
| A. | Lobe-finned fishes were ancestors of tetrapods |
| B. | Tetrapoda are classified into 4 sub-classes i.e. Amphibia, Reptilia, Aves and Mammalia |
| C. | The word tetrapoda means those that have four chambered heart |
| D. | Most of them are terrestrial |
| Answer» D. Most of them are terrestrial | |
| 6. |
Which among the following is incorrect about Osteichthyes? |
| A. | Swim bladder helps them retain buoyancy |
| B. | Many of them are edible |
| C. | Gills are separate without operculum |
| D. | Skin covered with cycloid/ ctenoid scales |
| Answer» D. Skin covered with cycloid/ ctenoid scales | |
| 7. |
Which among the following is not correct about Chondrichthytes? |
| A. | Chondrichthytes are jawless fishes |
| B. | They have stream-lined body |
| C. | Notochord is present throughout their life |
| D. | Their skin is covered with pointed denticles |
| Answer» B. They have stream-lined body | |
| 8. |
Which among the following is the main difference between Chondrichthytes and Osteichthytes? |
| A. | Endoskeleton composition |
| B. | Fins |
| C. | Type of blood |
| D. | Type of jaws |
| Answer» B. Fins | |
| 9. |
Which among the following is an incorrect statement about circulatory system in Pisces? |
| A. | Their circulatory system is of closed type |
| B. | They have two-chambered heart i.e. they have an auricle and a ventricle |
| C. | They have a single circulatory system with gills i.e. oxygenated blood is pumped to body parts only once |
| D. | Auricle is also called receiving chamber and ventricle is also called as pumping chamber |
| Answer» D. Auricle is also called receiving chamber and ventricle is also called as pumping chamber | |
| 10. |
Which among the following is incorrect about Pisces? |
| A. | They have a streamlined body and a muscular tail that helps them in their movement |
| B. | They are cold-blooded animals and can regulate the body temperature |
| C. | Their heart is 2 chambered |
| D. | Their skeleton is made of cartilage and bone |
| Answer» C. Their heart is 2 chambered | |