Introduction to Olericulture MCQs (Quiz 6)

Introduction to Olericulture MCQs (Quiz 6) [Explore all MCQs]
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1. Which environmental factor is the most common trigger for bolting in cool-season biennial vegetables?

 Extended cold period followed by warm temperatures

 Frost followed by sudden warming

 High soil salinity

 Prolonged drought

2. What does the term “roguing” mean in vegetable crop production?

 Applying water to the field

 Harvesting mature fruits

 Adding fertilizers to the soil

 Removing diseased or off-type plants from the crop

3. Which of the following is botanically classified as a berry?

 Strawberry

 Onion

 Carrot

 Eggplant

4. What is the most immediate effect of reducing plant spacing (higher planting density) in a vegetable crop?

 Decreased competition for light

 Increased light interception per plant

 Increased competition among plants for light, water, and nutrients

 No change in yield

5. Why does calcium deficiency cause blossom end rot in tomato fruits rather than yellowing of older leaves?

 Calcium is immobile; fruits have low transpiration and receive less calcium than leaves

 Older leaves store excess calcium

 Fruits produce their own calcium

 Calcium is mobile and moves to fruits first

6. In which of the following situations is transplanting most beneficial?

 When seeds are extremely cheap and abundant

 When irrigation is completely unavailable

 When the growing season is very short

 When the vegetable has very tiny seeds

7. Which of the following plant species is classified as a corm?

 Sweet potato

 Taro

 Potato

 Ginger

8. A student writes the scientific name of brinjal (eggplant) in four ways. Which one follows the correct format of binomial nomenclature?

 Solanaceae Solanum

 Solanum melongena

 solanum Melongena

 Solanaceae melongena

9.

Under which environmental condition do C₃ plants show the greatest increase in photorespiration?

 Low temperature and high CO₂

 High CO₂ and low O₂

 Low light and high humidity

 High temperature and low CO₂

10. In protected cultivation, which modification helps reduce the risk of frost damage to vegetable seedlings?

 Increasing soil nitrogen

 Changing day length artificially

 Raising night temperature by trapping longwave radiation

 Increasing wind circulation

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