You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.
You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.
Options
The correct option is D (Carrot and radish).
Marking Scheme
- 1Identifying that carrot and radish are both modified taproots. (0.5 marks)
- 2Concluding that they share a common structural origin and are therefore homologous. (0.5 marks)
Hint
Look for two vegetables that are modifications of the same plant organ (e.g., both are roots or both are stems).
Quick Oral Answer
Carrot and radish are homologous because both are modified taproots that serve the function of food storage, sharing the same basic anatomical origin.
Analysis & Explanation
To identify homologous structures, we must look for organs that share the same basic structural design and origin, even if they perform similar or different functions. Let's analyze the options:
- Option A (Potato and tomato): Potato is a modified stem (tuber) and tomato is a fruit (developed from an ovary). They do not share a homologous relationship of this type.
- Option B (Carrot and tomato): Carrot is a modified root and tomato is a fruit. They do not represent homologous structures.
- Option C (Potato and sweet potato): Potato is a modified stem (tuber) while sweet potato is a modified root (tuberous root). Since they have different structural origins but perform the same function (food storage), they are analogous structures.
- Option D (Carrot and radish): Both carrot and radish are modified taproots. Since they share the same anatomical origin (root modifications for food storage), they represent homologous structures.
Thus, Carrot and Radish are the correct pair of homologous structures.
Common Mistakes
- 1Choosing potato and sweet potato as homologous because they are both underground food-storing structures. In reality, potato is a stem and sweet potato is a root, making them analogous.
- 2Not recognizing that carrot and radish are both root modifications.
Interesting Facts
Both carrots and radishes are biennial plants that store food reserves in their taproots during the first year of their growth cycle to support flowering and seed production in the second year.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2013?
This question carries 1 mark in the CBSE Class 10 Science 2013 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Heredity" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Homologous and Analogous Organs" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2013 paper?
This is a MCQ question from Section B in the CBSE Class 10 Science 2013 paper.