NCERT Class 10 Science — Chapter 3: How do Organisms Reproduce?

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The male reproductive unit of a flower is technically termed the:

Official previous-year question

Verified 1 Aug 2026.

Options

APistil
BStamen
CSepal
DPetal

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Solution

The correct option is Stamen.

Explanation

A typical flower in angiosperms consists of four distinct whorls arranged on the thalamus: calyx, corolla, androecium, and gynoecium. The androecium and gynoecium constitute the essential reproductive organs, while the calyx and corolla are accessory organs.

Detailed Analysis:

Stamen (Correct): The stamen represents the male reproductive unit of the flower. Collectively, stamens form the androecium. Each stamen typically consists of two parts: a long, slender stalk called the filament and a terminal, generally bilobed structure called the anther, where pollen grains are produced.
Pistil (Incorrect): The pistil (or carpel) is the female reproductive unit of the flower. Collectively, pistils form the gynoecium. It consists of the stigma, style, and ovary.
Sepal (Incorrect): Sepals are the individual units of the calyx, the outermost whorl of the flower. They are typically green and leaf-like, serving to protect the flower during the bud stage.
Petal (Incorrect): Petals are the individual units of the corolla. They are usually brightly colored to attract insects and other agents for pollination.

Key Takeaway:

In floral morphology, the stamen is the male reproductive organ (androecium), whereas the pistil or carpel is the female reproductive organ (gynoecium).

Your note

More from Chapter 3: How do Organisms Reproduce?

With reference to vegetative propagation in plants, consider the following statements: 1. It can result in earlier flowering and fruiting than seed propagation. 2. It enables multiplication of plants that no longer produce seeds. 3. It helps maintain parental traits due to genetic similarity. 4. It is not used for grapes. Which of the statements given above are correct?

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Consider the following statements about the male reproductive tract: 1. The vas deferens enters the kidney directly. 2. The urethra serves as a common passage for sperm and urine. 3. Secretions from accessory glands make transport easier and provide nutrition. Which of the statements given above are correct?

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In human reproduction, fertilisation normally occurs at, and implantation occurs at, respectively:

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How many of the following are listed as bacterial sexually transmitted infections: gonorrhoea, syphilis, warts, HIV-AIDS?

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In which of the following organisms does the body break into fragments upon maturation, with each fragment growing into a new individual?

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The correct option is Stamen.

Explanation

Detailed Analysis:

Stamen (Correct): The stamen represents the male reproductive unit of the flower. Collectively, stamens form the androecium. Each stamen typically consists of two parts: a long, slender stalk called the filament and a terminal, generally bilobed structure called the anther, where pollen grains are produced.
Pistil (Incorrect): The pistil (or carpel) is the female reproductive unit of the flower. Collectively, pistils form the gynoecium. It consists of the stigma, style, and ovary.
Sepal (Incorrect): Sepals are the individual units of the calyx, the outermost whorl of the flower. They are typically green and leaf-like, serving to protect the flower during the bud stage.
Petal (Incorrect): Petals are the individual units of the corolla. They are usually brightly colored to attract insects and other agents for pollination.

Key Takeaway:

In floral morphology, the stamen is the male reproductive organ (androecium), whereas the pistil or carpel is the female reproductive organ (gynoecium).