Question:
Red colour in apple arise from product known as:
Red colour in apple arise from product known as:
Show Hint
Cool nights and sunny days just before harvest are essential for red color development in apples.
This temperature drop stimulates the phenylalanine ammonia-lyase (PAL) enzyme, which is the key enzyme in the flavonoid pathway.
This temperature drop stimulates the phenylalanine ammonia-lyase (PAL) enzyme, which is the key enzyme in the flavonoid pathway.
Updated On: Jul 29, 2026
- Chromogen
- Florigen
- Carotenoids
- Flavonoids
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
The color of fruit skin is determined by various pigments, including chlorophylls, carotenoids, and anthocyanins.
The development of these pigments is controlled by genetic and environmental factors.
Step 2: Detailed Explanation:
The prominent red color of apple skin is due to the accumulation of anthocyanin pigments (primarily cyanidin-3-galactoside).
Anthocyanins are water-soluble pigments that belong to the larger chemical class of flavonoids.
The synthesis of these flavonoids in the apple skin is stimulated by light (specifically UV-B light) and cool temperatures as the fruit approaches maturity.
Let us analyze the other options:
- Chromogen (A): A colorless substance that can be chemically converted into a pigment, but is not the specific pigment class itself.
- Florigen (B): A systemic plant hormone responsible for inducing flowering, not pigmentation.
- Carotenoids (C): Fat-soluble pigments responsible for yellow, orange, and warm red colors (such as in tomatoes and carrots), but not the bright red of apples.
- Flavonoids (D): The broad biochemical group that includes anthocyanins.
Since anthocyanins are structurally classified as flavonoids, the red pigmentation in apples originates from flavonoid compounds.
Therefore, option (D) is the correct choice.
Step 3: Final Answer:
The red color of apple skin is due to anthocyanins, which are a class of Flavonoids.
The color of fruit skin is determined by various pigments, including chlorophylls, carotenoids, and anthocyanins.
The development of these pigments is controlled by genetic and environmental factors.
Step 2: Detailed Explanation:
The prominent red color of apple skin is due to the accumulation of anthocyanin pigments (primarily cyanidin-3-galactoside).
Anthocyanins are water-soluble pigments that belong to the larger chemical class of flavonoids.
The synthesis of these flavonoids in the apple skin is stimulated by light (specifically UV-B light) and cool temperatures as the fruit approaches maturity.
Let us analyze the other options:
- Chromogen (A): A colorless substance that can be chemically converted into a pigment, but is not the specific pigment class itself.
- Florigen (B): A systemic plant hormone responsible for inducing flowering, not pigmentation.
- Carotenoids (C): Fat-soluble pigments responsible for yellow, orange, and warm red colors (such as in tomatoes and carrots), but not the bright red of apples.
- Flavonoids (D): The broad biochemical group that includes anthocyanins.
Since anthocyanins are structurally classified as flavonoids, the red pigmentation in apples originates from flavonoid compounds.
Therefore, option (D) is the correct choice.
Step 3: Final Answer:
The red color of apple skin is due to anthocyanins, which are a class of Flavonoids.
Was this answer helpful?
0
0
Top ICAR AIEEA Horticulture Questions
- In banana:
Statement (A): Bunch feeding is a simple and low-cost method.
Statement (B): It is the direct way to supply nutrients to the bunch.
Statement (C): Only micronutrients can be given through this method.
Choose the correct answer from the options given below. - The softwood grafting
Statement (I): Is done with mature, procured scion on the emerging soft, coppery-red shoot of the rootstock, which is 60-70 days old.
Statement (II): Is used for raising desired varieties of mango, sapota, tamarind and cashew.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): In garlic modified roots are economic part.
Statement (II): Characteristic odour in garlic is due to volatile organic sulfur-containing compounds that are rapidly produced upon tissue damage and diffuse into the air.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The flowers of ridge gourd start opening in the evening and remain open throughout the night.
Statement (II): Pollination of ridge gourd is done in the day time.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The first gynoecious based hybrid of bitter gourd is Pusa Hybrid-4 developed by ICAR-IARI, New Delhi.
Statement (II): The male:female ratio of the gynoecious based hybrids of bitter gourd is 25:1.
In light of the above statements, choose the most appropriate answer from the options given below.
View More Questions
Top ICAR AIEEA Plant Chemistry Questions
- What is the edible portion of cauliflower?
- The bitterness in colocasia corms is due to
- What is the approximately average protein content (on dry weight basis) in potato?
- Given below are two statements:
Statement (I): The typical vegetable cowpea has higher polysaccharides : monosaccharide ratio.
Statement (II): Amino acid profile particularly lycin, leucin and phenylalanine contents are relatively high in cowpea.
In light of the above statements, choose the most appropriate answer from the options given below. - The pungency of onion is due to
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions