Quarter 3 Assessment Review

A herbivore is an organism that eats plants or plant parts. This means that it primarily consumes vegetation as its source of food. It does not feed on other animals or their byproducts. Herbivores play an important role in ecosystems as they help to control plant populations and contribute to nutrient cycling. Examples of herbivores include cows, rabbits, and deer.

Mammals are the only group of animals that are endothermic, meaning they can regulate their body temperature internally. They also produce milk to nourish their young and have hair or fur covering their bodies. Fish, amphibians, reptiles, and birds are all ectothermic, meaning their body temperature is determined by their environment, and they do not produce milk or have hair. Therefore, the correct answer is mammals.

The correct answer is N, P, M, O. This is because metamorphosis is a process that involves a series of stages, with each stage building upon the previous one. In this case, N is the youngest stage, followed by P, M, and finally O, which is the oldest stage.

Regeneration refers to the ability of an organism to regrow or replace lost or damaged body parts. This process is seen in certain animals, such as starfish and salamanders, who can regenerate limbs or organs. It is not related to being an herbivore, which refers to an organism that primarily consumes plants, or being sessile, which means being fixed in one place. Similarly, being a hermaphrodite refers to having both male and female reproductive organs, and metamorphosis refers to the process of transformation from one form to another. Therefore, regeneration is the most relevant term in relation to the ability to regrow lost body parts.

Birds are the correct answer because they are endotherms, meaning they can regulate their body temperature internally. They have feathers which help with insulation and flight, and their bones are hollow which makes them lightweight for flying. Fish, amphibians, reptiles, and mammals do not possess these specific characteristics, making birds the only suitable option.

Fish are ectotherms that use gills to exchange oxygen and carbon dioxide. Unlike mammals and birds, which are endotherms and regulate their body temperature internally, fish rely on their environment to maintain their body temperature. They have specialized gills that allow them to extract oxygen from water and release carbon dioxide. This adaptation enables fish to live and breathe underwater efficiently. Amphibians, reptiles, birds, and mammals have different respiratory systems and do not exclusively rely on gills for gas exchange.

The correct answer is "Invertebrate" because animals with no backbone are classified as invertebrates. Invertebrates make up the majority of animal species and include organisms such as insects, worms, and jellyfish. They lack a vertebral column, which is the defining characteristic of vertebrates. Invertebrates have a wide range of body structures and adaptations, but they all share the common feature of not having a backbone.

A carnivore is an animal that kills and eats other animals. Unlike herbivores that primarily consume plants or omnivores that eat both plants and animals, carnivores rely solely on animal flesh for their diet. They have adaptations such as sharp teeth and claws to capture and kill their prey. Therefore, the correct answer is carnivore.

The animal would be classified as an insect because it is the only option that belongs to the class Insecta. Insects are characterized by having a three-part body (head, thorax, and abdomen), six legs, and usually two pairs of wings. The other options, such as crustacean, annelid, echinoderm, arachnid, and cnidarian, belong to different animal classes and do not possess the specific characteristics of an insect.

The given animal would be classified as a crustacean because crustaceans are a group of arthropods that include animals such as crabs, lobsters, and shrimp. They have a hard exoskeleton, jointed appendages, and a segmented body. Based on the options provided, crustacean is the most appropriate classification for the given animal.

The correct answer is "sessile". Sessile organisms are those that remain attached to one place throughout their lives. They do not move or have the ability to move from one location to another. This is in contrast to other organisms that are capable of locomotion. Sessile organisms can be found in various habitats such as the ocean floor, rocks, or plants. They rely on external sources for food and reproduction, and their lack of mobility is compensated by adaptations that allow them to thrive in their stationary lifestyle.

Vertebrate is the correct answer because animals with a backbone are classified as vertebrates. This means that they have an internal skeleton made up of bones or cartilage, which provides support and protection for their bodies. Examples of vertebrates include mammals, birds, reptiles, amphibians, and fish. In contrast, invertebrates do not have a backbone and instead have an exoskeleton (external skeleton) or no skeleton at all.

Setae are bristle-like structures that help an earthworm move. They are located on the ventral surface of the earthworm and are used for locomotion. The setae anchor the earthworm to the ground and provide traction as it moves. When the earthworm contracts its longitudinal muscles, the setae grip the soil, and when it relaxes the muscles, the setae are pulled back, allowing the earthworm to move forward. Therefore, setae are essential for the earthworm's movement and play a crucial role in its locomotion.

Metamorphosis refers to a series of changes in body form that some animals undergo to become adults. This process involves a complete transformation in physical appearance and structure, often including changes in organs, body parts, and even habitat. It is a common phenomenon observed in many insects, such as butterflies and beetles, as well as some amphibians like frogs and salamanders. During metamorphosis, animals typically go through distinct stages, such as larvae or nymphs, before reaching their adult form. This process allows for the development and specialization of different body structures and functions necessary for survival and reproduction.

A hermaphrodite is an animal that has both male and female reproductive organs, allowing it to produce both sperm and eggs. This means that hermaphrodites have the ability to self-fertilize and reproduce without the need for a separate mate. This adaptation is commonly found in many invertebrates, such as snails and earthworms, as well as some fish and amphibians. Being a hermaphrodite allows these animals to increase their chances of successful reproduction and ensures that they can reproduce even if a mate is not readily available.

Reptiles are ectotherms, meaning they rely on external sources of heat to regulate their body temperature. They have dry scaly skin, which helps to prevent water loss. Reptiles also lay shelled eggs, which are typically laid on land. This combination of characteristics is unique to reptiles and distinguishes them from fish, amphibians, birds, and mammals.

An exoskeleton is a thick, hard outer covering that protects and supports arthropods. Unlike vertebrates, which have an internal skeleton called an endoskeleton, arthropods have their skeleton on the outside. This exoskeleton provides a strong and rigid structure that allows arthropods to move and function effectively. It also serves as a protective barrier against predators and the environment.

Amphibians are the class that means "double life" because they are adapted to living on land and in water. They have the ability to breathe through their skin and have both lungs and gills, allowing them to live in both terrestrial and aquatic environments. Examples of amphibians include frogs, toads, and salamanders.

Earthworms have a specialized organ called a gizzard, which is responsible for grinding the soil and breaking it down into smaller particles. The gizzard contains small stones or grit that help in the mechanical breakdown of the soil. This grinding process is important for the earthworms as it helps them extract nutrients from the soil and aids in the decomposition of organic matter. The gizzard acts as a powerful digestive organ in earthworms, allowing them to process the soil efficiently.

The animal would be classified as an annelid because annelids are segmented worms that have a cylindrical body and bristle-like structures called setae. This animal is likely to have these characteristics based on the given options.

Amphibians are ectotherms that spend time in both water and on land, and they have moist skin. Unlike fish, amphibians have lungs and can breathe air. Reptiles are also ectotherms, but they have dry scaly skin and do not have a moist skin like amphibians. Birds and mammals are endotherms, meaning they can regulate their body temperature internally, and they do not have moist skin like amphibians. Therefore, the correct answer is amphibians.

An omnivore is an organism that consumes both plants and animals as part of its diet. This means that it has the ability to obtain nutrients from a wide range of sources, including fruits, vegetables, meat, and insects. Unlike herbivores, which only eat plants, and carnivores, which only eat meat, omnivores have a more varied diet. They have adaptations that allow them to digest and utilize both plant and animal matter efficiently. Some examples of omnivores include humans, bears, and raccoons.

The hydra is using budding as a type of reproduction. Budding is a form of asexual reproduction where a new individual grows out of the parent organism. In this process, a small bud forms on the parent organism and eventually develops into a genetically identical offspring. This method allows the hydra to produce multiple offspring without the need for a mate.

Earthworms store food in their crop. The crop is a specialized organ in the earthworm's digestive system where food is temporarily stored before it moves on to the gizzard for further digestion. The crop allows the earthworm to store and regulate the amount of food it consumes, ensuring a steady supply of nutrients for its survival.

The animal would be classified as an arachnid because arachnids are a class of joint-legged invertebrate animals, which includes spiders, scorpions, and ticks. Arachnids have two body segments, eight legs, and no antennae. This animal fits the description of an arachnid based on these characteristics.

An endotherm is an animal whose internal body temperature stays relatively the same. This means that the animal can regulate its body temperature internally, regardless of the external temperature. Endotherms typically have a higher metabolic rate and generate their own body heat through processes like shivering or sweating. This allows them to maintain a constant body temperature, which is important for their overall physiological functioning.

The animal in question would be classified as a cnidarian because it belongs to the phylum Cnidaria. Cnidarians are characterized by their radial symmetry, presence of specialized cells called cnidocytes that contain stinging structures called nematocysts, and a simple body plan with a central digestive cavity. Examples of cnidarians include jellyfish, sea anemones, and coral.

A sea star has radial symmetry because its body parts are arranged around a central point, like the spokes of a wheel. This means that if you were to draw a line through the center of the sea star, any section you cut would be symmetrical.

A fish would be classified as a vertebrate because it possesses a backbone, which is a defining characteristic of vertebrates. Vertebrates are animals that have an internal skeleton made of bone or cartilage, and they also have a well-developed nervous system. Fish, along with other animals such as mammals, birds, reptiles, and amphibians, belong to the vertebrate group.

An ectotherm is an animal whose internal body temperature changes with the temperature of its surroundings. This means that ectotherms rely on external sources of heat to regulate their body temperature. Unlike endotherms, which can generate and maintain their own body heat, ectotherms are unable to internally regulate their temperature. Instead, they adjust their body temperature by behaviorally seeking out warm or cool environments. Examples of ectotherms include reptiles, amphibians, and most fish.

Amphibians need moisture to obtain oxygen because they have a permeable skin that allows gas exchange. They can absorb oxygen directly from the environment through their skin, in addition to using their lungs. This is important for their survival as they rely on oxygen for respiration.

The lateral line system in fish is a sensory system that runs along the sides of their bodies. It consists of a series of small sensory organs called neuromasts, which are sensitive to changes in water pressure and movement. This system allows fish to detect movement in the water, including the movement of prey, predators, or other objects in their environment. By detecting these movements, fish can navigate, hunt for food, and avoid potential dangers.

An echinoderm is a marine animal characterized by a spiny exoskeleton and a radial symmetry. Examples of echinoderms include starfish, sea urchins, and sea cucumbers. Based on the given options, the animal in question would be classified as an echinoderm.