Which among the following is correct about the anatomy of monocot root...
Ascending order of plants based on the number of xylem strands in their roots:
(I) Trapa
(II) Pisum
(III) Castanea
(IV) Nicotiana
The correct answer is option 'A': I, IV, II, III.
Explanation:
To arrange the plants in ascending order based on the number of xylem strands in their roots, we need to determine the number of xylem strands present in each plant and then sort them in ascending order.
Xylem strands are responsible for transporting water and minerals from the roots to the rest of the plant. The number of xylem strands can vary among different plant species, depending on their requirements.
Let's analyze each plant individually:
(I) Trapa:
Trapa is commonly known as water chestnut. It belongs to the family Lythraceae. The roots of Trapa contain a single xylem strand. Therefore, Trapa has the fewest number of xylem strands among the given plants.
(II) Pisum:
Pisum is commonly known as pea. It belongs to the family Fabaceae. The roots of Pisum contain several xylem strands. While the exact number of strands may vary, Pisum has more xylem strands compared to Trapa.
(III) Castanea:
Castanea is commonly known as chestnut. It belongs to the family Fagaceae. The roots of Castanea contain a higher number of xylem strands compared to Pisum.
(IV) Nicotiana:
Nicotiana is commonly known as tobacco. It belongs to the family Solanaceae. The roots of Nicotiana contain the highest number of xylem strands among the given plants.
Arranging the plants in ascending order based on the number of xylem strands:
Trapa (I) has the fewest xylem strands, followed by Pisum (II) with more strands, then Nicotiana (IV) with even more strands, and finally Castanea (III) with the highest number of xylem strands.
Therefore, the correct order is: I, IV, II, III.
Which among the following is correct about the anatomy of monocot root...
Trapa < Nicotiana < Pisum < Castanea
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