Nutrition in Plants and Animals
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Questions and Answers

Which tissue is responsible for transporting water and minerals in plants?

  • Cortex
  • Xylem (correct)
  • Phloem
  • Cambium
  • What is the primary role of the human circulatory system?

  • Producing hormones
  • Transporting substances (correct)
  • Digesting food
  • Regulating temperature
  • What is the function of the kidneys in the excretory system?

  • Absorb nutrients
  • Produce hormones
  • Filter blood (correct)
  • Regulate body temperature
  • Which system uses nerve impulses to transmit signals quickly in animals?

    <p>Nervous system (D)</p> Signup and view all the answers

    What is phototropism in plants?

    <p>Growth towards light (B)</p> Signup and view all the answers

    What role do hormones play in the endocrine system of animals?

    <p>Regulate various bodily functions (A)</p> Signup and view all the answers

    In which way do animals primarily exhibit movement?

    <p>Using muscles and skeletons (C)</p> Signup and view all the answers

    What is transpiration in plants?

    <p>Loss of water from leaves (C)</p> Signup and view all the answers

    What is the overall reaction formula for photosynthesis?

    <p>6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (C)</p> Signup and view all the answers

    Which of the following nutrients is NOT essential for plant growth?

    <p>Oxygen (A)</p> Signup and view all the answers

    What type of organisms are animals classified as in terms of nutrition?

    <p>Heterotrophs (D)</p> Signup and view all the answers

    What is the role of salivary amylase in the human digestive system?

    <p>Initiates carbohydrate digestion in the mouth (C)</p> Signup and view all the answers

    Which statement accurately describes aerobic respiration compared to anaerobic respiration?

    <p>It requires oxygen and produces more ATP. (B)</p> Signup and view all the answers

    Which of the following organs is NOT part of the human digestive system?

    <p>Kidney (A)</p> Signup and view all the answers

    Which nutrient is primarily responsible for energy storage and insulation in the human body?

    <p>Lipids (D)</p> Signup and view all the answers

    Which of these is NOT a characteristic of photosynthesis?

    <p>It absorbs carbon dioxide from the soil. (C)</p> Signup and view all the answers

    Flashcards

    What are autotrophs?

    Plants make their own food using sunlight, water, and carbon dioxide through photosynthesis.

    What is photosynthesis?

    The process where plants convert sunlight, water, and carbon dioxide into glucose and oxygen.

    What is chlorophyll?

    A green pigment found in chloroplasts that absorbs sunlight for photosynthesis.

    What are heterotrophs?

    Animals cannot make their own food and rely on other organisms for nutrition.

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    What is animal nutrition?

    The process in animals that breaks down food, absorbs nutrients, and eliminates waste.

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    What are the two types of digestion?

    Mechanical digestion involves physically breaking down food, while chemical digestion uses enzymes to break down food molecules.

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    What are the main types of nutrients and their functions?

    Carbohydrates provide energy, proteins are essential for building tissues, lipids provide insulation and store energy, vitamins and minerals support various metabolic functions.

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    What is respiration?

    Respiration is the process where living organisms break down food molecules to release energy in the form of ATP.

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    What does xylem transport in plants?

    The process by which plants transport water and minerals from the roots to the rest of the plant using specialized tissues called xylem.

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    What does phloem transport in plants?

    The process by which plants transport sugars produced during photosynthesis from the leaves to other parts of the plant using specialized tissues called phloem.

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    What is transpiration?

    The loss of water from the leaves by evaporation, which plays a significant role in water transport.

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    What is the human circulatory system?

    The system that transports substances throughout the body, consisting of the heart, blood vessels, and blood.

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    What is excretion?

    The removal of metabolic waste products from the body.

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    What is a tropism?

    A growth response in plants caused by a stimulus. For example, phototropism is the growth response to light.

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    How do animals move?

    The movement of animals using muscles and skeletons, coordinated by the nervous system.

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    What is the nervous system?

    The system of nerves and the brain that coordinates and controls bodily functions.

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    Study Notes

    Nutrition in Plants

    • Plants are autotrophs, synthesizing their own food using sunlight, water, and carbon dioxide through photosynthesis.
    • Photosynthesis occurs in chloroplasts, containing chlorophyll, a green pigment absorbing sunlight.
    • The overall photosynthesis reaction is: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (Carbon dioxide + Water → Glucose + Oxygen).
    • Plants require minerals (nitrogen, phosphorus, potassium, magnesium) for growth, absorbed through roots.

    Nutrition in Animals

    • Animals are heterotrophs, obtaining food from other organisms.
    • Animal nutrition involves intake, digestion, absorption, and assimilation of food.
    • Animals exhibit diverse feeding habits: herbivores (plant-eaters), carnivores (meat-eaters), and omnivores (eating both).

    Human Digestive System

    • The human digestive system breaks down food into absorbable molecules.
    • Key organs include mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas, and gallbladder.
    • Each organ plays a specific digestive role.
    • Mechanical digestion physically breaks down food; chemical digestion uses enzymes to break down molecules.
    • Salivary amylase initiates carbohydrate digestion in the mouth.

    Nutrition in Humans - Importance of Different Nutrients

    • Carbohydrates are the body's primary energy source.
    • Proteins are vital for growth, repair, and tissue maintenance.
    • Lipids (fats) provide insulation and energy storage.
    • Vitamins and minerals are essential for metabolic functions.
    • Nutrient deficiencies can cause health problems.
    • A balanced diet with all nutrients is crucial for health.

    Respiration

    • Respiration breaks down food molecules, releasing energy as ATP.
    • Aerobic respiration needs oxygen; anaerobic respiration doesn't.
    • Aerobic respiration is more efficient, producing more ATP.
    • The human respiratory system takes in oxygen and expels carbon dioxide.
    • Involved organs include the nose, trachea, bronchi, and lungs.

    Transportation in Plants

    • Plants transport water, minerals, and food through xylem and phloem.
    • Xylem carries water and minerals from roots to the plant.
    • Phloem transports sugars (made during photosynthesis) from leaves to other parts.
    • Transpiration, water loss from leaves through evaporation, is crucial for water transport.

    Transportation in Humans

    • The human circulatory system transports substances throughout the body.
    • This system consists of the heart, blood vessels (arteries, veins, capillaries), and blood.
    • Blood carries oxygen, nutrients, hormones, and waste products.
    • The heart is a muscular pump circulating blood.
    • The circulatory system maintains internal balance (homeostasis).

    Excretion in Humans

    • Excretion removes metabolic waste from the body.
    • The excretory system includes kidneys, ureters, bladder, and urethra.
    • Kidneys filter blood, producing urine containing waste.
    • Urine is stored in the bladder and eliminated through the urethra.
    • Excretion maintains a healthy internal environment.

    Control and Coordination in Animals

    • Control and coordination are crucial for homeostasis and responding to stimuli.
    • The nervous and endocrine systems play key roles.
    • The nervous system uses nerve impulses for quick signals.
    • The endocrine system uses hormones for regulatory functions.
    • Coordination handles internal and external stimuli.

    Control and Coordination in Plants

    • Plants display growth responses (tropisms).
    • Phototropism is the response to light.
    • Geotropism is the response to gravity.
    • Plants react to touch, water, and other stimuli.
    • Plants lack nervous tissue and hormones as in animals.
    • Plant growth regulators, such as auxins, coordinate responses.

    Movement in Plants and Animals

    • Plants have limited movement, primarily growth responses.
    • Animals have diverse movements: walking, running, flying, swimming.
    • Muscles and skeletons enable animal movement.
    • Coordination between the nervous system and muscles is essential for movement.
    • Skeletal systems provide support and protection.

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    Description

    Explore the fascinating processes of nutrition in plants and animals. This quiz covers photosynthesis in plants and the diverse feeding habits and digestive processes of animals, including humans. Test your knowledge on how different organisms obtain and utilize nutrients!

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