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Biology Olympiad Nutrition in Plants — practice questions

Explore 30 free Nutrition in Plants questions in Biology Olympiad Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Nutrition in Plants questions and exercises with answers

Showing questions 1–30 of 30.

A mango tree builds its own food using sunlight. Its mode of nutrition is:Read the answer and worked solution →A deer chews leaves because it cannot make food itself. Deer are called:Read the answer and worked solution →Tiny pores on a leaf surface let gases pass in and out. They are the:Read the answer and worked solution →A gardener notices leaves are green. The pigment that gives this colour is:Read the answer and worked solution →A leaf uses light to build food from carbon dioxide and water. The process is:Read the answer and worked solution →Iodine turns a tested leaf blue black. This shows the leaf has stored:Read the answer and worked solution →Bubbles rise from a pond plant standing in bright sunlight. The gas is:Read the answer and worked solution →Sunlight trapped by green leaves is the ultimate source of energy for:Read the answer and worked solution →Green algae floating on a pond can prepare their own food. Algae are:Read the answer and worked solution →Amarbel twines over a tree and draws food from it. Amarbel is a:Read the answer and worked solution →The tree on which Cuscuta climbs and feeds is known as the:Read the answer and worked solution →Cuscuta cannot cook its own food because its stem has no:Read the answer and worked solution →A jug shaped leaf traps a fly and digests it. Such plants are called:Read the answer and worked solution →In a pitcher plant the jug like pitcher is a modified part of the:Read the answer and worked solution →The apex of a pitcher plant leaf forms a lid that closes the pitcher's:Read the answer and worked solution →A fungus spreads over a rotting log and feeds on it. Its nutrition is:Read the answer and worked solution →Cottony growth appears on bread left damp for three days. These are:Read the answer and worked solution →Two organisms live together and share both shelter and nutrients. This is:Read the answer and worked solution →A crusty lichen on a rock is an alga living together with a:Read the answer and worked solution →A farmer spreads manure on a tired field because manure supplies:Read the answer and worked solution →Soil in a wheat field runs low in usable nitrogen. The bacterium that fixes it is:Read the answer and worked solution →Rhizobium lives in the root nodules of gram, peas and beans. These crops are:Read the answer and worked solution →Catch the food makersRead the answer and worked solution →Pop the raw materialsRead the answer and worked solution →Run the nutrition gatesRead the answer and worked solution →Slice the leaf wordsRead the answer and worked solution →Makes food or takes foodRead the answer and worked solution →Sort the feeding modesRead the answer and worked solution →Type the numberRead the answer and worked solution →Plant nutrition bingoRead the answer and worked solution →

Worked practice questions

A mango tree builds its own food using sunlight. Its mode of nutrition is:

  1. Autotrophic
  2. Saprotrophic
  3. Heterotrophic
  4. Symbiotrophic
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Correct answer: A. Autotrophic

1. Organisms that make their own food are autotrophs. 2. A mango tree makes food in its green leaves. 3. So its nutrition is autotrophic. _Source: syllabus Science Class VII, Chapter 1, Nutrition in Plants._

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A deer chews leaves because it cannot make food itself. Deer are called:

  1. Green cells
  2. Heterotrophs
  3. Autotrophs
  4. Producers
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Correct answer: B. Heterotrophs

1. Animals depend on plants or other animals for food. 2. Such food seekers are named heterotrophs. 3. So a deer is a heterotroph. _Source: syllabus Science Class VII, Chapter 1, Nutrition in Plants._

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Tiny pores on a leaf surface let gases pass in and out. They are the:

  1. Stomata
  2. Stigmas
  3. Sepals
  4. Stamens
Show answer and solution

Correct answer: A. Stomata

1. Gas exchange in a leaf happens through small pores. 2. These pores are named stomata. 3. So the answer is stomata. _Source: syllabus Science Class VII, Chapter 1, Nutrition in Plants._

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