The Leaf — NEET Biology MCQs with Solutions
Free NEET Biology The Leaf MCQs with step-by-step solutions (6 questions). Part of Morphology of Flowering Plants. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — The Leaf · easy · theory
In monocots such as grasses, the venation of the leaf is typically:
A. Parallel ✓ Correct
B. Reticulate
C. Furcate
D. Absent
Solution: Monocots show parallel venation; dicots usually show reticulate venation.
Q2 — The Leaf · easy · theory
The arrangement of leaves on a stem or branch is called:
A. Venation
B. Phyllotaxy ✓ Correct
C. Aestivation
D. Vernation
Solution: Phyllotaxy may be alternate, opposite or whorled.
Q3 — The Leaf · medium · theory
In a pinnately compound leaf (e.g. neem), the leaflets are borne on a:
A. Stipule
B. Common axis (rachis) ✓ Correct
C. Node directly
D. Common point at the tip of the petiole
Solution: In pinnately compound leaves leaflets are along a rachis; in palmately compound leaves they attach at a common point (e.g. silk cotton).
Q4 — The Leaf · medium · theory
The tendrils of pea and the spines of cactus are examples of modified:
A. Stems
B. Leaves ✓ Correct
C. Stipules only
D. Roots
Solution: In pea the terminal leaflets become tendrils; in cactus leaves become spines — both are leaf modifications (compare stem tendrils/thorns).
Q5 — The Leaf · hard · theory
The fleshy leaves of onion and garlic are modified for:
A. Photosynthesis only
B. Food and water storage ✓ Correct
C. Nitrogen fixation
D. Support
Solution: The scale leaves of onion/garlic bulbs are swollen with stored food; the pitcher of Nepenthes is an insect-trapping leaf modification.
Q6 — The Leaf · hard · theory
Which phyllotaxy is shown by China rose (alternate), Calotropis (opposite) and Alstonia (whorled)? The whorled arrangement means:
A. One leaf per node in alternating fashion
B. More than two leaves arise at a node ✓ Correct
C. Two leaves at each node
D. No leaves at nodes
Solution: Whorled phyllotaxy (Alstonia) has more than two leaves per node; alternate (China rose) one per node; opposite (Calotropis) two per node.