Study Guides/Biology/Unisexual Flowers
Study Guide · Biology

Unisexual and Bisexual Flowers

In Class 10 Biology (How do Organisms Reproduce?), flowers are classified based on whether they contain both male and female reproductive organs, or only one.

Question (Click to Flip)

What are unisexual flowers? Give examples.

Answer

Unisexual flowers are those that contain either only the male organ (stamen) or only the female organ (pistil). Examples: Papaya, Watermelon, and Maize.

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Key Facts

Unisexual: Either male or female only. Example: Papaya, Watermelon.

Bisexual: Both organs in same flower. Example: Rose, Hibiscus.

Stamens: Male part. Pistil: Female part.

Unisexual Flowers

Definition: Flowers that have either only male (stamen) or only female (pistil) reproductive organs, but NOT both.

  • Male flower: Contains only the stamen (produces pollen).
  • Female flower: Contains only the pistil (receives pollen, forms seed).

Examples of Unisexual Flowers: Papaya, Watermelon, Maize (Corn), Cucumber, Pumpkin (both male and female flowers exist on the same plant but separately).

Bisexual Flowers

Definition: Flowers that contain BOTH the stamen (male) and pistil (female) in the same flower. Also called perfect flowers or hermaphrodite flowers.

Examples of Bisexual Flowers: Rose, Hibiscus (Gudhal), Mustard, Petunia, Tomato.

Quick Comparison

FeatureUnisexualBisexual
Organs presentOnly stamens OR only pistilBoth stamen AND pistil
Also calledImperfect flowersPerfect flowers
ExamplesPapaya, MaizeRose, Hibiscus

Questions and Answers

What are unisexual flowers? Give examples.+

Unisexual flowers are those that contain either only the male organ (stamen) or only the female organ (pistil). Examples: Papaya, Watermelon, and Maize.

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