Nutrition In Plants Quiz: 7th Grade!

Animals and human beings are an example of heterotrophs as they depend on plants in many ways for their food. Animals obtain their nutrition by consuming plants or other animals that have consumed plants. Similarly, human beings also rely on plants directly or indirectly for their food, as they consume plant-based products or animals that have been fed with plants. Both animals and human beings are unable to produce their own food through photosynthesis, making them heterotrophs.

Carbon dioxide is taken in by plants through small openings on the surface of their leaves called stomata. These stomata allow for the exchange of gases, with carbon dioxide entering the plant and oxygen and water vapor exiting. The stomata open and close to regulate the amount of gas exchange and prevent excessive water loss.

Photosynthesis is the process by which green plants synthesize food. Through this process, plants convert sunlight, carbon dioxide, and water into glucose and oxygen. This glucose is then used as a source of energy for the plant's growth and development. Photosynthesis is a vital process for the survival of plants and is responsible for the production of oxygen in the atmosphere.

Plants undergo photosynthesis to produce glucose, which is a form of sugar. Glucose is then converted into starch, a complex carbohydrate, and stored in various parts of the plant such as roots, stems, and leaves. This stored starch serves as an energy reserve for the plant, which can be utilized during periods of low sunlight or when the plant requires extra energy for growth and development.

Fungi and mushrooms are examples of saprotrophic nutrition because they obtain their nutrients by decomposing organic matter. They secrete enzymes that break down dead organic material, such as dead plants or animals, into simpler substances that they can absorb and use for their own growth and metabolism. This process of decomposition plays a crucial role in nutrient cycling and the recycling of organic matter in ecosystems.

The organism from whose body food is obtained by a parasite is called the host. A host is an organism that provides nourishment and shelter to another organism, known as a parasite. The parasite relies on the host for its survival and reproduction, often causing harm or disease to the host in the process. The relationship between a parasite and its host is a complex interaction that can have significant effects on both organisms involved.

Nutrition provides energy for carrying out various functions in the body. Energy is required for all bodily processes, including growth, repair, and movement. It is obtained from the food we eat, which is broken down into molecules that can be used by cells to produce energy. Without adequate nutrition and energy intake, the body would not be able to perform essential functions and maintain overall health and well-being.

Nutrition helps in the process of repairing damaged parts and organs. When our body experiences injury or damage, it requires essential nutrients to initiate the healing process. These nutrients provide the necessary building blocks for the body to repair and regenerate damaged tissues. Adequate nutrition, including a balanced diet with essential vitamins, minerals, and proteins, plays a crucial role in supporting the body's natural repair mechanisms. Without proper nutrition, the body may struggle to heal and recover from injuries or damage efficiently.

Autotrophs are organisms that have the ability to produce their own food through photosynthesis or chemosynthesis. They can convert inorganic substances into organic compounds, such as glucose, which they use as a source of energy. This process allows autotrophs to sustain themselves without relying on consuming other organisms. Examples of autotrophs include plants, algae, and some bacteria.

Chlorophyll is the green pigment found in plants that is essential for photosynthesis. During photosynthesis, chlorophyll absorbs sunlight energy, which is used to convert carbon dioxide and water into glucose and oxygen. Without chlorophyll, plants would not be able to carry out photosynthesis and produce their own food. Therefore, chlorophyll is necessary for the process to occur.

Chlorophyll is a pigment found in green plants that plays a crucial role in photosynthesis. It absorbs sunlight and uses its energy to convert water and carbon dioxide into glucose and oxygen. This process is essential for plants to produce food and release oxygen into the atmosphere. Therefore, sunlight is necessary for chlorophyll to carry out photosynthesis and synthesize food in green plants.

Nutrition refers to the process of taking in food by an organism and utilizing it in the body. It involves the ingestion, digestion, absorption, and metabolism of nutrients to provide energy and support various bodily functions. In this context, nutrition is the correct answer as it encompasses the entire process of food intake and utilization by the body.

Oxygen is released as a byproduct of this process. This suggests that during the mentioned process, oxygen is produced and released.

Organisms that live together and share their shelter and nutrients are said to be in a symbiotic relationship. In a symbiotic relationship, two or more different species interact with each other and benefit from the relationship. This can include mutualistic relationships, where both species benefit, or parasitic relationships, where one species benefits at the expense of the other. Symbiotic relationships are common in nature and can be found in various ecosystems, such as coral reefs, where coral and algae have a mutualistic symbiotic relationship.

Algae prepare food for fungi. Algae are photosynthetic organisms that can produce their own food through photosynthesis. Fungi, on the other hand, are non-photosynthetic organisms that rely on external sources for nutrition. In a mutualistic relationship known as mutualism, algae provide food (carbohydrates) to fungi, while fungi provide a protected environment and minerals to algae. This symbiotic relationship benefits both organisms involved.

Photosynthesis is the process by which plants convert sunlight into energy. It occurs in the chloroplasts, which are primarily located in the leaves of plants. The leaves have specialized structures called stomata, which allow for the exchange of gases necessary for photosynthesis. Additionally, the leaves have a large surface area, which maximizes the absorption of sunlight. Therefore, the correct answer is "leaves."

Chloroplasts are organelles that exist in plants. These organelles contain chlorophyll, the colored pigment that is responsible for carrying out the process of photosynthesis in plants.

Plants that feed on insects are called "insectivorous" plants. This term is used to describe plants that have adapted to obtain nutrients by trapping and digesting insects. They have specialized structures such as sticky leaves, pitcher-shaped leaves, or snap traps to capture their prey. Insectivorous plants typically live in nutrient-poor environments and rely on insects to supplement their diet.

Plants are an example of autotrophs because they have the ability to produce their own food through the process of photosynthesis. They use carbon dioxide from the atmosphere, water from the soil, and light energy from the sun to convert these raw materials into glucose (food) and oxygen. This process allows plants to sustain themselves and also release oxygen into the environment, making them vital for the survival of other organisms.

Nitrogen in the atmosphere is not easily accessible because it exists as a diatomic molecule, N2, which is highly stable and does not readily react with other elements or compounds. This makes it difficult for plants and animals to directly obtain nitrogen from the atmosphere. Instead, nitrogen fixation processes, such as lightning strikes or biological nitrogen fixation by certain bacteria, are required to convert atmospheric nitrogen into forms that can be utilized by living organisms.

Fungi have a symbiotic relationship with algae, known as lichens. In this relationship, fungi provide water, minerals, and shelter to the algae. The fungi absorb water from the environment and provide it to the algae, ensuring their hydration. They also absorb minerals from the surroundings and transfer them to the algae, which is essential for their growth and survival. Additionally, fungi provide shelter by forming a protective structure around the algae, shielding them from harsh environmental conditions and predators.

Cuscuta, commonly known as Amarbel, is a parasitic plant that lacks chlorophyll and cannot produce its own food through photosynthesis. Instead, it relies on other plants for its nutrition. It attaches itself to a host plant and extracts nutrients and water from it. This makes Cuscuta a non-green plant that obtains ready-made food from the plant it is growing on.

The bacteria provide a plant with nitrogen that they fix from the atmosphere. Nitrogen is an essential nutrient for plants, as it is a key component of proteins and DNA. The bacteria have the ability to convert atmospheric nitrogen into a form that plants can use, through a process called nitrogen fixation. In return for providing the plant with nitrogen, the bacteria receive shelter and food from the plant. This is a mutually beneficial relationship known as symbiosis.

Heterotrophs are organisms that rely on others for their food and nutrition, typically consuming ready-made food produced by autotrophs. Unlike autotrophs, which can produce their own food through photosynthesis or chemosynthesis, heterotrophs cannot synthesize organic compounds and must obtain them from other sources. They can be classified into various categories based on their feeding habits, such as herbivores, carnivores, and omnivores. Heterotrophs play a crucial role in the food chain as consumers, breaking down organic matter and recycling nutrients back into the ecosystem.

Chloroplast is the cell organelle that carries out photosynthesis. It contains chlorophyll, a pigment that captures sunlight and converts it into chemical energy through the process of photosynthesis. Inside the chloroplast, the light-dependent reactions occur in the thylakoid membranes, where sunlight is absorbed and converted into ATP and NADPH. The light-independent reactions, also known as the Calvin cycle, take place in the stroma of the chloroplast, where carbon dioxide is fixed and converted into glucose. Overall, chloroplasts play a crucial role in the production of food and oxygen in plants.

Saprotrophs are organisms that obtain their nutrition by decomposing and feeding on dead and decaying organic matter. They play a crucial role in the ecosystem by breaking down organic material and recycling nutrients back into the environment. Examples of saprotrophs include fungi and bacteria.

Chlorophyll, the pigment responsible for photosynthesis in plants, is located inside the chloroplast. The chloroplast is a specialized organelle found in plant cells that contains chlorophyll and other pigments necessary for capturing sunlight and converting it into energy through the process of photosynthesis. This energy is then used by the plant for various metabolic activities. Therefore, the correct answer is chloroplast.

Nitrogen fixation is the process through which nitrogen is converted into a form that can be utilized by plants and other living organisms. This process is essential because nitrogen gas, which makes up about 78% of the Earth's atmosphere, is not directly usable by most organisms. Nitrogen-fixing bacteria play a crucial role in this process by converting atmospheric nitrogen into ammonia or other nitrogen compounds that can be used by plants to synthesize proteins and other essential molecules. This allows for the cycling of nitrogen in ecosystems and ensures a continuous supply of this vital nutrient for living organisms.

Stomata are small openings on the surface of leaves and stems that allow for the exchange of gases between the plant and its environment. Through stomata, plants can take in carbon dioxide for photosynthesis and release oxygen as a byproduct. This process is essential for the plant's respiration and overall metabolism. Additionally, stomata also play a role in transpiration, which is the loss of water vapor from the plant. Transpiration helps to regulate the plant's temperature and transport nutrients throughout the plant. Therefore, the correct functions of stomata are the exchange of gases and transpiration.

The leaf is the part of the plant primarily responsible for photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy, using chlorophyll in the chloroplasts to capture sunlight. The leaves contain numerous chloroplasts, which house the photosynthetic machinery. This process produces glucose, which is used by the plant for energy and growth, and oxygen, which is released into the atmosphere.

Fungi are used in the production of antibiotics. Antibiotics are medications that are used to treat bacterial infections. Some fungi, such as Penicillium and Streptomyces, produce compounds that have antibacterial properties. These compounds are isolated and used to create antibiotics that can be used to fight bacterial infections in humans and animals. Therefore, it is correct to say that some fungi are used in the production of antibiotics.

Rafflesia and Cuscuta are examples of total parasitizing plants. Rafflesia is a genus of flowering plants that are parasitic on the roots of other plants. They lack leaves, stems, and roots of their own and obtain nutrients and water from their host plants. Cuscuta, also known as dodder, is a genus of parasitic plants that wrap around the stems of other plants and penetrate their host's vascular system to extract nutrients. Both Rafflesia and Cuscuta rely entirely on their host plants for survival and are considered total parasites.

A parasite is an organism that relies entirely on another organism for its food. It cannot produce its own food and instead feeds off the nutrients and resources provided by its host. This dependency is crucial for the survival and sustenance of the parasite.

Rhizobium is a type of bacteria that convert atmospheric nitrogen into a soluble form that can be utilized by plants through a process called nitrogen fixation. This process involves the conversion of atmospheric nitrogen gas (N2) into ammonia (NH3) or nitrate (NO3-), which can then be taken up by plants and used to synthesize proteins and other essential molecules. This ability of Rhizobium to fix nitrogen is particularly important in the context of legume plants, as they form a symbiotic relationship with these bacteria, allowing them to access a vital nutrient source that is otherwise inaccessible to most plants.

Rhizobium bacteria are the most common example of bacteria that reside in the root nodules of leguminous plants. These bacteria have a symbiotic relationship with the plants, where they fix atmospheric nitrogen into a usable form for the plants, while the plants provide the bacteria with nutrients. This symbiotic relationship is essential for the growth and development of leguminous plants, as it allows them to thrive in nitrogen-deficient soils.

A haustorium is a root-like structure or a structure that grows into or around another structure to absorb water or nutrients from the host. It is commonly found in parasitic plants and fungi, allowing them to obtain the necessary resources from their host organism. This specialized structure enables the parasite to establish a connection with the host's vascular system, facilitating the transfer of nutrients and water.

Organelles are tiny cellular structures inside a cell that perform specific functions important for the cell. These structures are like specialized compartments within the cell, each with its own unique function. Examples of organelles include the nucleus, which contains the cell's genetic material, and the mitochondria, which produce energy for the cell. Organelles help to maintain the overall structure and function of the cell, allowing it to carry out its necessary tasks and processes.

Total parasitic plants are the heterotrophic plants that rely entirely on a host plant for all their needs, including shelter, water, and food. These plants do not have the ability to produce their own food through photosynthesis and instead obtain nutrients from their host plants. They establish a physical connection with the host plant, usually through specialized structures called haustoria, to extract water and nutrients. This dependence on the host plant for survival is what distinguishes total parasitic plants from other types of parasitic plants.

Partial parasitic plants have chlorophyll, which allows them to carry out photosynthesis and produce their own food. However, they still rely on their hosts for water and nutrients. This means that while they can generate some energy on their own, they are not completely independent and need the support of their host plants to survive.