To perform an experiment to identify the different parts of an embryo of a dicot seed, first of all you require a dicot seed. Select dicot seeds from the following group: Wheat, Gram, Maize, Pea, Barley, Ground-nut
To perform an experiment to identify the different parts of an embryo of a dicot seed, first of all you require a dicot seed. Select dicot seeds from the following group: Wheat, Gram, Maize, Pea, Barley, Ground-nut
Options
Option B is correct because Gram, Pea, and Ground-nut are all dicotyledonous (dicot) seeds, meaning their embryos have two cotyledons.
Marking Scheme
- 11 Mark for selecting the correct option (B) and identifying Gram, Pea, and Ground-nut as dicot seeds.
Hint
Dicot seeds can be easily split into two equal halves (cotyledons), such as peanuts (ground-nut), peas, and grams. Monocots like wheat and maize cannot be split this way.
Quick Oral Answer
Gram, Pea, and Ground-nut are dicot seeds because they contain two cotyledons in their embryo, whereas wheat, maize, and barley are monocot seeds with only one cotyledon.
Analysis & Explanation
Flowering plants (angiosperms) are classified into monocotyledons (monocots) and dicotyledons (dicots) based on the number of cotyledons present in their seeds. Dicot seeds have two cotyledons (seed leaves) which store food for the developing embryo. Examples include Gram, Pea, Ground-nut, beans, etc. Monocot seeds have only one cotyledon. Examples include cereals like Wheat, Maize, Barley, Rice, etc. Therefore, the group containing only dicot seeds is Gram, Pea, and Ground-nut (Option B).
Why other options are incorrect:
- Option A: Wheat is a monocot seed.
- Option C: Maize and Barley are monocot seeds.
- Option D: Maize is a monocot seed.
Common Mistakes
- 1Confusing maize or wheat as dicots.
- 2Not remembering that cereals are generally monocots.
Interesting Facts
The cotyledons in dicot seeds often act as the first photosynthetic leaves after germination, helping the young seedling grow before its true leaves develop.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2017?
This question carries 1 mark in the CBSE Class 10 Science 2017 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Dicot and Monocot Seeds" from CBSE Class 10 Science.
Has this question appeared in other CBSE Science papers?
Yes, a similar question appeared in the 2017 CBSE Class 10 Science paper.
What type of question is this in the CBSE Class 10 Science 2017 paper?
This is a MCQ question from Section B in the CBSE Class 10 Science 2017 paper.