MCQ Detailed View

Seed morphology is an important aspect of plant biology and helps in identifying and classifying crops. Among common vegetable crops, onion (Allium cepa) produces seeds that are generally rectangular in shape, which is a distinguishing feature compared to seeds of other vegetables.

Onion seeds are small, black, and have a slightly rectangular or angular appearance, making them easy to identify. These seeds are produced in the flower umbels of the onion plant after pollination. Rectangular-shaped seeds provide a compact structure that can store nutrients efficiently, supporting germination when planted.

Other vegetable crops listed in the options have different seed shapes:

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  Carrot (Daucus carota) produces small, elongated or oval seeds.

  
  


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  Turnip (Brassica rapa) produces round or slightly oblong seeds.

  
  


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  Cucumber (Cucumis sativus) has flat, oval seeds that are not rectangular.

  
  

Seed shape plays an important role in plant identification, agriculture, and seed selection for cultivation. Farmers and horticulturists use characteristics like seed shape, size, and color to select quality seeds for better yield. Understanding these morphological differences also helps students learn about plant taxonomy, reproduction, and crop science.

Onion seeds are not only significant for vegetable propagation but are also widely used in agriculture education and plant biology experiments. Knowledge of seed shape, like the rectangular seeds of onions, forms a fundamental part of everyday biology and helps learners connect scientific observations with practical agricultural applications.