Organisms Nutrition and Photosynthesis Quiz

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Questions and Answers

What type of organisms derive nutrition from dead and decaying matter?

  • Autotrophs
  • Saprotrophs (correct)
  • Heterotrophs
  • Parasites

Why are a few plants and all animals considered heterotrophs?

  • Because they feed on other organisms for nutrition (correct)
  • Because they release oxygen during respiration
  • Because they are microscopic in size
  • Because they can perform photosynthesis

Which term best describes a plant that traps and feeds on insects?

  • Saprotroph
  • Parasite (correct)
  • Heterotroph
  • Autotroph

What is the term used for green plants that synthesise their own food?

<p>Autotrophs (C)</p> Signup and view all the answers

Which organism is an example of a parasite?

<p>Cuscuta (Dodder plant) (D)</p> Signup and view all the answers

In photosynthesis, what gas do plants take in and release respectively?

<p>Take in carbon dioxide, release oxygen (A)</p> Signup and view all the answers

What is the main feature of plants that can trap insects and digest them?

<p>They have pitcher-like structures on their leaves (B)</p> Signup and view all the answers

Why do plants that can trap insects and digest them not resemble green plants?

<p>They lack mouths like animals (C)</p> Signup and view all the answers

What type of organisms lack chlorophyll and cannot make food by photosynthesis?

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

What is the mode of nutrition in which organisms take in nutrients from dead and decaying matter called?

<p>Saprotrophic nutrition (B)</p> Signup and view all the answers

What is the main distinction between green plants and organisms like fungi?

<p>Possession of chlorophyll (A)</p> Signup and view all the answers

What are organisms with saprotrophic mode of nutrition called?

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

How do fungi acquire nutrients?

<p>By absorbing nutrients from their surroundings (B)</p> Signup and view all the answers

Fungi growing on pickles, leather, and clothes due to hot and humid weather represent which mode of nutrition?

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

What is the color of the fluffy umbrella-like patches that grow on rotting wood during the rainy season?

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

Which term describes the relationship where some fungi live inside the roots of plants and share shelter and nutrients?

<p>Symbiosis (C)</p> Signup and view all the answers

Paheli wants to know if fungi cause diseases. What category do fungi belong to when they cause harm to other organisms?

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

Boojho's grandfather mentioned his wheat fields were spoiled by a fungus. What type of organism is a fungus in this context?

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

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Study Notes

Modes of Nutrition

  • Organisms that derive nutrition from dead and decaying matter are saprotrophs.
  • A few plants and all animals are considered heterotrophs because they cannot synthesise their own food.

Carnivorous Plants

  • A plant that traps and feeds on insects is known as an insectivorous plant.
  • Green plants that synthesise their own food are autotrophs.
  • The main feature of plants that can trap insects and digest them is the presence of digestive enzymes.
  • Insectivorous plants do not resemble green plants because they have adapted to obtain nutrients from insects due to a lack of essential nutrients in their environment.

Photosynthesis

  • In photosynthesis, plants take in carbon dioxide and release oxygen respectively.

Fungi

  • Fungi are organisms that lack chlorophyll and cannot make food by photosynthesis.
  • Fungi acquire nutrients by breaking down dead and decaying organic matter.
  • The mode of nutrition in which organisms take in nutrients from dead and decaying matter is called saprotrophic nutrition.
  • Fungi growing on pickles, leather, and clothes due to hot and humid weather represent saprotrophic mode of nutrition.
  • The fluffy umbrella-like patches that grow on rotting wood during the rainy season are white in color.

Fungi-Plant Relationships

  • The relationship where some fungi live inside the roots of plants and share shelter and nutrients is known as mycorrhizal relationship.

Fungi and Disease

  • Fungi can cause diseases in other organisms.
  • Fungi that cause harm to other organisms are categorized as pathogens.
  • In the context of Boojho's grandfather's wheat fields being spoiled, a fungus is an example of a pathogen.

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