Animal Biology Trivia: Can You Score 100?

Explanation
The odd one out in this group is "Lizard" because it is the only reptile, while the others (Frog, Newt, and Toad) are amphibians. Reptiles and amphibians are two different classes of animals, with distinct characteristics and adaptations. Therefore, "Lizard" does not belong to the same category as the other options.

Explanation
Vertebrates are animals with a backbone, which includes mammals, birds, reptiles, amphibians, and fish. This distinguishes them from invertebrates, which do not have a backbone. Carnivores and herbivores are terms used to describe the diet of animals, and while some vertebrates can be carnivores or herbivores, not all vertebrates fall into these categories. Therefore, the correct answer is vertebrates.

Explanation
Height shows continuous variation because it can take on a wide range of values that can be measured and compared. Unlike blood group, which is discrete and can only take on a limited number of options, height exists on a spectrum and can vary continuously from very short to very tall. Similarly, gender and tongue rolling are also discrete traits that can only have a limited number of options, whereas height can have an infinite number of possible values.

Explanation
Seals belong to the group of mammals. This is because they have mammary glands and nurse their young with milk. They also have fur or hair on their bodies, which is a characteristic of mammals. Seals give live birth to their offspring, another trait of mammals. Unlike fish, amphibians, and reptiles, seals do not lay eggs. Therefore, the correct answer is mammals.

Explanation
Birds are warm-blooded because they can regulate their body temperature internally, regardless of the external environment. This ability allows them to maintain a constant body temperature, which is essential for their metabolism and overall physiological functions. Unlike reptiles, which are cold-blooded and rely on external heat sources to regulate their body temperature, birds have a high metabolic rate and produce heat through various physiological processes, such as shivering or increasing their metabolic activity. This adaptation enables birds to thrive in a wide range of environments and climates.

Explanation
Trout is the correct answer because it is a fish, and all fish have backbones. Bees, lobsters, and spiders are invertebrates, meaning they do not have a backbone.

Explanation
Amphibians are the correct answer because they are known for their ability to breathe through both their moist skin and lungs. Unlike reptiles, which mainly rely on lungs for respiration, amphibians have permeable skin that allows them to absorb oxygen directly from the environment. This is why they require a moist environment to prevent dehydration. Additionally, amphibians also need water to breed, as they lay their eggs in water and their larvae undergo development in aquatic habitats. This distinguishes them from crustaceans and fish, which have different respiratory systems and reproductive strategies.

Explanation
Snails have an unsegmented body. Unlike ants, wasps, and earthworms, snails do not have distinct body segments. They have a soft, fleshy body that is not divided into sections. This lack of segmentation is a characteristic feature of snails, making them the correct answer in this case.

Explanation
Spiders have two body parts, namely the cephalothorax and the abdomen. They also have four pairs of jointed legs, which gives them a total of eight legs. Unlike beetles and woodlice, spiders do not have wings. Therefore, the correct answer is spider.

Explanation
A mollusc is not an arthropod because it belongs to a different phylum. Arthropods are characterized by having jointed legs and a segmented body, while molluscs have soft bodies and usually have a hard external shell. Molluscs belong to the phylum Mollusca, which includes animals like snails, clams, and squids. Arachnids, crustaceans, and insects are all arthropods, as they have jointed appendages and a segmented body.