1.
What do mammals use to breathe with? (choose the correct answer)
Correct Answer
C. Lungs
Explanation
Mammals use lungs to breathe with. Lungs are specialized organs that allow mammals to take in oxygen from the air and remove carbon dioxide from their bodies. This process, known as respiration, is essential for mammals to obtain the oxygen they need for energy production and to get rid of waste products. Unlike other animals such as fish that use gills to extract oxygen from water, mammals have lungs adapted for breathing in air. Lungs are composed of millions of tiny air sacs called alveoli, which provide a large surface area for gas exchange to occur.
2.
Where do most Mammals live? (choose the correct answer)
Correct Answer
B. Land
Explanation
Most mammals live on land. This is because mammals are terrestrial animals that have adapted to life on land. They have specialized features such as limbs for walking or running, lungs for breathing air, and bodies covered in fur or hair to keep them warm. While there are some mammals that live in the sea or sky, the majority of mammal species inhabit various terrestrial habitats across the globe.
3.
People belong to which Class of Animals? (choose the correct answer)
Correct Answer
D. Mammals
Explanation
Mammals are a class of animals that are characterized by having mammary glands, which produce milk to nourish their young. They are vertebrates and have hair or fur on their bodies. Mammals give birth to live young and are warm-blooded. They include animals such as humans, dogs, cats, elephants, and whales.
4.
How do Cold-blooded Animals get the heat? (choose the correct answer)
Correct Answer
C. From the surroundings
Explanation
Cold-blooded animals, also known as ectotherms, rely on external sources of heat to regulate their body temperature. They do not generate their own heat internally like warm-blooded animals. Instead, they absorb heat from their surroundings, such as the sun or warm surfaces. This allows them to increase their body temperature and become more active. Therefore, the correct answer is "From the surroundings."
5.
Which of the following belong to Mammals? (choose the correct answer)
Correct Answer
A. Humans/People
Explanation
Humans/People belong to the category of mammals because they possess certain characteristics that define mammals. Mammals are warm-blooded vertebrates that have hair or fur on their bodies, give birth to live young, and nurse their young with milk produced by mammary glands. Humans possess all of these characteristics, making them mammals. Birds, lizards, and frogs, on the other hand, do not possess these characteristics and belong to different animal groups.
6.
Who are Zoologists? (choose the correct answer)
Correct Answer
A. Scientists who study animals
Explanation
Zoologists are scientists who study animals. They specialize in researching various aspects of animal biology, behavior, and habitats. They may study a wide range of animals, from insects to mammals, in order to gain a better understanding of their anatomy, physiology, and ecological relationships. Zoologists often conduct fieldwork, observe animals in their natural habitats, and analyze data to draw conclusions about animal behavior and evolution. Their research findings are crucial for conservation efforts, understanding ecosystems, and improving our knowledge of the animal kingdom.
7.
All Reptiles... (choose the correct answer)
Correct Answer
B. Lay eggs
Explanation
Reptiles are a group of animals that lay eggs as part of their reproductive process. Unlike mammals, which give birth to live young, reptiles lay eggs and the embryos develop outside of the mother's body. This characteristic is one of the defining features of reptiles and distinguishes them from other groups of animals.
8.
All Birds... (choose the correct answer)
Correct Answer
B. Have Feathers
Explanation
Birds have feathers, which is a defining characteristic of this group of animals. Feathers serve various functions for birds, including flight, insulation, and display. Feathers are unique to birds and are not found in any other group of animals. Therefore, the correct answer is "Have Feathers."
9.
Which of the following animals lay eggs? (choose the correct answer)
Correct Answer
C. Snakes
Explanation
Snakes lay eggs. Unlike mammals, such as whales and tigers, snakes are reptiles and reproduce by laying eggs. This is a characteristic feature of reptiles, including snakes. People, being humans, do not lay eggs as they are mammals.
10.
How do fishes breathe? (choose the correct answer)
Correct Answer
C. Through their gills
Explanation
Fishes breathe through their gills, which are specialized organs that extract oxygen from the water. The gills are located on either side of the fish's head and consist of thin, feathery structures called filaments. As water passes over the gills, oxygen is extracted from the water and absorbed into the fish's bloodstream, while carbon dioxide is released back into the water. This process allows fishes to extract oxygen from their aquatic environment and is essential for their survival.
11.
Some Amphibians have... (choose the correct answer)
Correct Answer
A. Moist skin
Explanation
Amphibians have moist skin because they rely on their skin for respiration. Their skin needs to be moist in order to absorb oxygen from the environment. Additionally, the moist skin helps to keep amphibians hydrated and prevents them from drying out. This adaptation allows them to live both in water and on land, as they can breathe through their skin while in water and through their lungs while on land.
12.
What does Invertebrate mean? (choose the correct answer)
Correct Answer
A. Animals without backbone
Explanation
Invertebrate refers to animals without a backbone. This means that they do not possess a vertebral column or spine. Examples of invertebrates include insects, worms, mollusks, and crustaceans.
13.
What are Fish covered with? (choose the correct answer)
Correct Answer
C. Scales
Explanation
Fish are covered with scales, which are small, hard, and overlapping plates that provide protection and help reduce friction in the water. Scales also play a role in regulating the fish's body temperature and maintaining buoyancy. Unlike hair, feathers, or bones, scales are specifically adapted for aquatic life and are a distinctive characteristic of fish.