Science mid-term exam – Grade 4 | Attempts: 365

2.

A food chain shows the transfer of energy from one organism to another.

True
False

Correct Answer

A. True

Explanation

A food chain is a representation of the flow of energy in an ecosystem, showing how energy is transferred from one organism to another as they consume each other. Each organism in the chain serves as a source of energy for the next organism in line. This transfer of energy is essential for the survival and functioning of the ecosystem. Therefore, the statement "A food chain shows the transfer of energy from one organism to another" is true.

Rate this question:

3.

Fishes breathe through..................

Correct Answer
gills

Explanation
Fish breathe through gills, which are specialized organs that extract oxygen from water. Gills are located on the sides of a fish's head and consist of thin filaments that are rich in blood vessels. As water passes over the gills, oxygen is extracted from the water and absorbed into the fish's bloodstream, while carbon dioxide is released. This allows fish to extract oxygen from their aquatic environment and survive underwater.

Rate this question:

1

4.

All of the following are cold-blooded Except:

Fish
Amphibians
Birds
Mammals

Correct Answer

A. Mammals

Explanation

Mammals are warm-blooded animals, meaning they can regulate their body temperature internally. Unlike cold-blooded animals such as fish, amphibians, and reptiles, mammals have the ability to generate and maintain their own body heat through metabolic processes. This allows them to live in a wide range of environments and climates.

Rate this question:

5.

Animal cells are surrounded by a solid wall called the cell wall.

True
False

Correct Answer

A. False

Explanation

Animal cells do not have a cell wall. Instead, they are surrounded by a flexible and permeable plasma membrane. The cell wall is a characteristic feature of plant cells and some other organisms, providing structural support and protection.

Rate this question:

2

6.

Attribute is one of the characteristics of living organisms.

True
False

Correct Answer

A. True

Explanation

Living organisms possess various attributes or characteristics that distinguish them from non-living things. These attributes include the ability to grow, reproduce, respond to stimuli, adapt to their environment, and maintain homeostasis, among others. Therefore, it is accurate to say that attribute is indeed one of the characteristics of living organisms.

Rate this question:

7.

All of the following are invertebrates Except for:

Sponges
Echinoderms
Reptiles
Mollusks

Correct Answer

A. Reptiles

Explanation

Reptiles are not invertebrates because they have a backbone or vertebral column, which classifies them as vertebrates. In contrast, sponges, echinoderms, and mollusks are all examples of invertebrates as they lack a vertebral column and are characterized by their soft bodies.

Rate this question:

1

8.

Which one do you like?

Option 1
Option 2
Option 3
Option 4

Correct Answer

A. Option 1

Explanation

The explanation for the given correct answer is not available.

Rate this question:

9.

The Ascaris worm is an example of:

Ringworms
Roundworms
Flatworms
Arthropods

Correct Answer

A. Roundworms

Explanation

The Ascaris worm is an example of a roundworm. Roundworms, also known as nematodes, are a type of worm that have a long, cylindrical body shape. They are found in various environments, including soil, water, and the bodies of animals and humans. Ascaris worms are one of the most common types of roundworms that infect humans. They typically live in the intestines and can cause symptoms such as abdominal pain, diarrhea, and weight loss.

Rate this question:

10.

Label the steps of photosynthesis on the following figure:

Correct Answer
Sunlight

11.

Bacteria are multicellular.

True
False

Correct Answer

A. False

Explanation

Bacteria are actually unicellular organisms, meaning they are made up of a single cell. They do not have specialized cells or tissues that make up a multicellular organism. Bacteria reproduce by dividing into two identical cells, and each individual cell is capable of carrying out all necessary functions for survival. Therefore, the statement that bacteria are multicellular is incorrect.

Rate this question:

12.

Which of the following regions is moderately cold in winter and warm to hot in summer, with moderate rainfall, and fertile soil:

Forest
Deserts
Grass lands
Biomes

Correct Answer

A. Grass lands

Explanation

Grasslands are moderately cold in winter and warm to hot in summer, with moderate rainfall, and fertile soil. This type of region is characterized by the presence of grasses and few to no trees. The moderate climate allows for the growth of grasses, while the fertile soil supports their growth. The moderate rainfall ensures that there is enough water for the grasses to thrive. Overall, grasslands provide a suitable environment for a variety of plant and animal species to flourish.

Rate this question:

13.

Type question here. Example: Practice makes you ________.

Correct Answer
Water

14.

……………..…. are heterotrophs with cell walls and most feed on dead or decaying organic matter

Correct Answer
Fungi

Explanation
Fungi are heterotrophs with cell walls and most feed on dead or decaying organic matter. This means that they obtain their nutrients by breaking down and absorbing organic material from their environment. Fungi play a crucial role in decomposition and nutrient cycling, as they break down complex organic compounds into simpler forms that can be used by other organisms. Their cell walls provide structural support and protection, similar to the cell walls found in plants. Overall, fungi are essential organisms in ecosystems due to their role in recycling nutrients and breaking down organic matter.

Rate this question:

1

15.

……………………………………. are plants that do not produce seeds.

Correct Answer
Non-seed plants

Explanation
Non-seed plants refer to plants that do not produce seeds for reproduction. These plants reproduce through spores or other means, such as fragmentation or vegetative propagation. Examples of non-seed plants include mosses, ferns, and algae. These plants have a different reproductive strategy compared to seed plants, which rely on the production and dispersal of seeds for reproduction. Non-seed plants are typically found in moist environments and play important roles in ecosystems as they contribute to soil formation, provide habitats for various organisms, and contribute to the overall biodiversity of the planet.

Rate this question:

1

16.

A group of individuals that belong to the same species and live in the same area.

Habitat
Ecosystem
Population
Community

Correct Answer

A. Population

Explanation

A population refers to a group of individuals that belong to the same species and live in the same area. It represents the total number of organisms of a particular species in a given location. This term specifically focuses on the number of individuals, rather than the interactions between different species or the physical environment. Therefore, population is the most appropriate answer in this context.

Rate this question:

17.

Type question here. Example: Practice makes you ________.

Correct Answer
Carbon dioxide

Explanation
Carbon dioxide is a colorless and odorless gas that is produced by the combustion of fossil fuels and the respiration of living organisms. It is a greenhouse gas that contributes to climate change and global warming. Additionally, carbon dioxide is also used in various industrial processes such as carbonation of beverages and as a fire extinguishing agent.

Rate this question:

18.

Correct Answer
Oxygen is released

19.

Scientists classify plants to vascular/non-vascular or …......

Correct Answer
Seed plants / seedless plants

Explanation
Scientists classify plants into two main groups: seed plants and seedless plants. Seed plants are those that reproduce through the formation of seeds, which contain the embryo and provide protection and nourishment. Seedless plants, on the other hand, do not produce seeds but reproduce through spores or other methods. This classification is important as it helps in understanding the reproductive strategies and evolutionary relationships among different plant species.

Rate this question:

20.

Design a food chain made up of 4 organisms:

21.

What does an energy pyramid represent?

22.

Read the case below to be able to answer for the following question: Layla has a plant. She puts it inside her locker in the room and locks the door of the locker. Layla and her brother Aziz were feeding the plant water for three days. But they noticed that the plant was withering instead of growing which was surprising Layla and Aziz. Q: Write a short paragraph including the reason behind that the plant did not grow and give recommendations for solving the problem:

23.

Science Mid-term Exam – Grade 4

Vertebrates are animals that do not have a backbone.

Quiz Preview

A food chain shows the transfer of energy from one organism to another.

Fishes breathe through..................

All of the following are cold-blooded Except:

Animal cells are surrounded by a solid wall called the cell wall.

Attribute is one of the characteristics of living organisms.

All of the following are invertebrates Except for:

Which one do you like?

The Ascaris worm is an example of:

Label the steps of photosynthesis on the following figure:

Bacteria are multicellular.

Which of the following regions is moderately cold in winter and warm to hot in summer, with moderate rainfall, and fertile soil:

Type question here. Example: Practice makes you ________.

……………..…. are heterotrophs with cell walls and most feed on dead or decaying organic matter

……………………………………. are plants that do not produce seeds.

A group of individuals that belong to the same species and live in the same area.

Type question here. Example: Practice makes you ________.

Scientists classify plants to vascular/non-vascular or …......

Design a food chain made up of 4 organisms:

What does an energy pyramid represent?

Design a food web consisting of at least 3 food chains: