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Olympiad (Class 7) Reproduction in Plants — practice questions — page 2

Explore 70 free Reproduction in Plants questions in Olympiad (Class 7) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Reproduction in Plants questions and exercises with answers

Showing questions 31–60 of 70.

Pollen moves from the anther to the stigma of the same flower. What is this called?Read the answer and worked solution →A flower pollinates itself before it even opens. What is this behaviour called?Read the answer and worked solution →A flower has no petals or scent and makes huge amounts of pollen. What is its likely pollinator?Read the answer and worked solution →Which of these plants is pollinated by wind?Read the answer and worked solution →What is pollination by wind called?Read the answer and worked solution →Pollen floats on the surface of a pond to reach a female flower. What is this pollination called?Read the answer and worked solution →Bees and butterflies carry pollen between flowers. What is pollination by insects called?Read the answer and worked solution →A sunbird carries pollen from one flower to another. What is bird pollination called?Read the answer and worked solution →A flower has white petals, a strong scent and opens at night. Which pollinators suit it best?Read the answer and worked solution →Which of these pollinating agents is nonliving?Read the answer and worked solution →Some orchid flowers copy the shape of insects. What does this make insects try to do?Read the answer and worked solution →A commercial apple orchard needs which kind of pollination to give a crop?Read the answer and worked solution →Why can a peach crop be produced without cross-pollination?Read the answer and worked solution →Honey bees often visit flowers of one species during a trip. What is this habit called?Read the answer and worked solution →A dry pollen grain begins to germinate only after it takes up what?Read the answer and worked solution →In a flowering plant, a male nucleus fuses with the egg cell. What does this produce?Read the answer and worked solution →Through which pore does the pollen tube enter an ovule?Read the answer and worked solution →What do we call the movement of seeds away from the parent plant?Read the answer and worked solution →Why does a plant gain from scattering its seeds far from itself?Read the answer and worked solution →Heavy ripe apples and coconuts drop from the plant. Which force disperses them?Read the answer and worked solution →A dry fruit splits with a snap and flings its seeds out. How are the seeds dispersed?Read the answer and worked solution →What inside the fruit often supplies the force for explosive seed dispersal?Read the answer and worked solution →The fruit of a dandelion has a feathery tuft. By which agent is it carried far?Read the answer and worked solution →Why must wind-dispersed plants make a huge number of seeds?Read the answer and worked solution →Which fruit feature helps dispersal by water?Read the answer and worked solution →A seed with hooks clings to a passing animal. How is it dispersed?Read the answer and worked solution →Why do many trees wrap their seeds in an edible, nutritious fruit?Read the answer and worked solution →Ants carry certain seeds into their nests. Which lipid-rich attachment attracts them?Read the answer and worked solution →A squirrel buries seeds and some are never eaten. What happens?Read the answer and worked solution →Which agent can carry palm seeds from an ocean shore to another continent?Read the answer and worked solution →

Worked practice questions

Pollen moves from the anther to the stigma of the same flower. What is this called?

  1. Geitonogamy
  2. Allogamy
  3. Autogamy
  4. Hydrophily
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Correct answer: C. Autogamy

Autogamy is self-pollination within one flower, while geitonogamy involves different flowers of one plant.

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A flower pollinates itself before it even opens. What is this behaviour called?

  1. Cleistogamy
  2. Hydrophily
  3. Anemophily
  4. Allogamy
Show answer and solution

Correct answer: A. Cleistogamy

Self-pollination inside an unopened flower is called cleistogamy.

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A flower has no petals or scent and makes huge amounts of pollen. What is its likely pollinator?

  1. Sunbirds
  2. Blowing wind
  3. Fruit bats
  4. Honey bees
Show answer and solution

Correct answer: B. Blowing wind

Wind-pollinated flowers lack showy petals and produce large amounts of pollen to compensate for chance.

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