1. What are parthenocarpic fruits?
A.
Fruits that develop without fertilization
B.
Fruits that develop only after seed germination
C.
Fruits that contain many large seeds
D.
Fruits that develop from roots
Correct Answer:
Fruits that develop without fertilization
Explanation:
Parthenocarpic fruits develop without fertilization and are usually seedless.
2. What is a common feature of parthenocarpic fruits?
A.
They are always dry fruits
B.
They are generally seedless
C.
They develop only underground
D.
They always have a hard outer covering
Correct Answer:
They are generally seedless
Explanation:
Since parthenocarpic fruits develop without fertilization, seeds usually do not form in them.
3. Which plant hormone can induce parthenocarpy in some plants?
A.
Gibberellin
B.
Ethylene
C.
Abscisic acid
D.
Cytokinin
Correct Answer:
Gibberellin
Explanation:
Gibberellin treatment can stimulate fruit development without fertilization, producing parthenocarpic fruits.
4. Parthenocarpy results in fruit development without which process?
A.
Photosynthesis
B.
Fertilization
C.
Respiration
D.
Transpiration
Correct Answer:
Fertilization
Explanation:
Parthenocarpic fruits form without the fusion of male and female gametes, which is fertilization.
5. Why are parthenocarpic fruits often preferred as food crops?
A.
They are usually seedless
B.
They always have a sour taste
C.
They cannot be eaten fresh
D.
They always grow below the soil
Correct Answer:
They are usually seedless
Explanation:
The absence of seeds makes parthenocarpic fruits convenient and desirable for consumption.
6. Which condition is absent during the formation of a typical parthenocarpic fruit?
A.
Fruit enlargement
B.
Cell division
C.
Fertilization
D.
Fruit development
Correct Answer:
Fertilization
Explanation:
Parthenocarpic fruit development involves fruit growth but does not require fertilization.
7. A farmer applies gibberellin to flowers and obtains seedless fruits. This is an example of:
A.
Parthenocarpy
B.
Seed dormancy
C.
Leaf fall
D.
Root formation
Correct Answer:
Parthenocarpy
Explanation:
The production of seedless fruits after hormone treatment without fertilization is called parthenocarpy.
8. Which type of fruit is produced when the ovary develops into a fruit without fertilization?
A.
Parthenocarpic fruit
B.
Dry fruit with seeds
C.
Dehiscent fruit
D.
Aggregate fruit with many embryos
Correct Answer:
Parthenocarpic fruit
Explanation:
Parthenocarpic fruits arise from the ovary without fertilization and are commonly seedless.
9. The agricultural use of gibberellin to produce seedless fruits is based on its ability to promote:
A.
Fruit development without fertilization
B.
Seed formation after fertilization
C.
Leaf separation from the stem
D.
Root branching only
Correct Answer:
Fruit development without fertilization
Explanation:
Gibberellin can induce fruit growth in the absence of fertilization, leading to parthenocarpic fruits.
10. Which statement about parthenocarpic fruits is correct?
A.
They develop only after seed formation
B.
They develop without fertilization and usually lack seeds
C.
They are produced only from roots
D.
They cannot be induced by plant hormones
Correct Answer:
They develop without fertilization and usually lack seeds
Explanation:
Parthenocarpic fruits form without fertilization and therefore generally do not contain normally developed seeds.
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