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Standard IX
Biology
Question

Monocotyledons and dicotyledons are the two subdivisions of flowering plants. Which of the following differentiates monocotyledons from dicotyledons?
  1. Floral structures in multiples of fours and fives
  2. Netted leaf venation and floral structures in multiples of three
  3. Floral structures in multiples of three and long taproots
  4. Long taproots and parallel venation in their leaves
  5. Parallel leaf venation and fibrous roots

A
Floral structures in multiples of fours and fives
B
Netted leaf venation and floral structures in multiples of three
C
Floral structures in multiples of three and long taproots
D
Parallel leaf venation and fibrous roots
E
Long taproots and parallel venation in their leaves
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Solution
Verified by Toppr

Monocots have single embryonic leaf while dicots have two. The trimerous arrangement is a characteristic feature of monocots. Monocots leaves exhibit parallel venation while dicot leaves exhibit reticulate. Dicots have taproot system while fibrous root system is characteristic of monocots. Monocots have parallel leaf venation while reticulate venation is characteristic of dicots. Thus, the correct answer is D.

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Similar Questions
Q1
Monocotyledons and dicotyledons are the two subdivisions of flowering plants. Which of the following differentiates monocotyledons from dicotyledons?
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Q2
Monocotyledons and dicotyledons differ from each other in which of the following ways? Select the correct answer from the codes given below.
(a) Monocotyledons have a ring of vascular bundles in the stem while dicotyledons have scattered vascular bundles in the stem.
(b) Monocotyledons have a network of branching veins in the leaves while dicotyledons have parallel veins in the leaves.
(c) Monocotyledons have narrow leaves while dicotyledons have broad leaves.
(d) In monocotyledons, flower parts come in threes or in multiples of threes while in dicotyledons, flower parts are in fours or fives or multiples of these numbers.
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Q3
Which of the following combination of features would you observe in grass? Explain.
(a) Parallel venation and fibrous root.
(b) Parallel venation and taproot.
(c) Reticulate venation and fibrous root.
(d) Reticulate venation and taproot.
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Q4

Question 1

Which of the following combination of features would you observe in grass?
(a) Parallel venation and fibrous root.
(b) Parallel venation and taproot.
(c) Reticulate venation and fibrous root.
(d) Reticulate venation and taproot.

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Q5
Leaves of dicotyledonous plants possess _________ venation, while _________ venation is the characteristic of most monocotyledons.
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