NEET : Multiple Choice questions: Morphology of Leaf
1. Consider the following statements and select the number of correct statements.
1. Leaf is originated from the node of stem.
2. Axil of leaf bear axillary bud which is transformed into a new branch.
3.Leaf is developed from the activity of shoot apical meristem .
4. Leaves are arranged on branch in acropetal order.
5. Leaves are important vegetative organ for Photosynthesis.
A. Two B. Four
C. Three D. Five
Answer : D Explanation
1. Leaf is originated from the node of stem.
2. Axil of leaf bear axillary bud which is transformed into a new branch.
3.Leaf is developed from the activity of shoot apical meristem .
4. Leaves are arranged on branch in acropetal order.
5. Leaves are important vegetative organ for Photosynthesis.
A. Two B. Four
C. Three D. Five
Answer : D Explanation
2. Which one of the following is not a basic part of leaf.
A. Stipule. B. Leaf base
C. Petiole D. Leaf lamina
Answer : A Explanation
3. Which one of the following pair is not correctly matched.
A. Small leaf life appendages bear by the leaf base : Stipule
B. Leaf is attached with the stem : Petiole
C. Leaf base covered stem partially or completely: Monocot plants
D. Swollen leaf base in legune plants : Pulvinus
Answer : B Explanation
4. Leaf is attached with the stem by the
A. Leaf blade B. Leaf lamina
C. Leaf base D. Petiole
Answer: C Explanation
6. Which one of the following statement is not correct.
A. The petiole hold the leaf blade.
B. Leaf blade is most expanded part of leaf and bear stomata.
C. The petiole is also called leaf lamina.
D. Petiole allow the leaf blade to flutter in wind to make leaf cooling and provide fresh air to leaf surface.
Answer: C Explanation
7. Which one of the following structure is not present in leaf blade or leaf lamina.
A. Stipule B. Vein
C. Veinlets D. Stomata
Answer: C Explanation
8. Consider the following statement and select the correct code
1. Vein provide rigidity for the leaf blade.
2. Vein act as channel for transport of water mineral and food material.
3. The prominent mid vein of leaf is called as called Midrib.
A. 1 and 2 B. 2 and 3
C. 1 , 2 and 3. D. 1 and 3
Answer: C Explanation
9. Which one of the following statement is correct.
A. Simple leaves can be Palmately and Pinnately.
B. In simple leaves, incision does not touch the mid rib.
C. Compound leaves are not divided into leaflets.
D. In Compound leaves, incision does not touch the mid rib.
Answer: B Explanation
10. Which of the following statement is incorrect about the compound leaves.
A. In Compound leaves, Incision touch the midrib and leaves are divided into to various leaflets.
B. In Compound leaves, Incision touches the midrib which represent the rachis.
C. Leaflets are present on common rachis which may represent mid rib called pinnately compound leaf.
D. Leaflets are originated from a common point at tip of petiole called palmately compound leaf.
11. Pinnately compound leaves is present in
A. Silk cotton B. Neem
C. Clover D. Cassava
Answer: B Explanation
12. Palmately compound leaves is present in
A. Silk cotton B. Neem
C. Rose D. All of above
Answer: A Explanation
Statement I : A bud is present in axil of petiole of both simple or compound leaves..
Statement Il : This bud is absent in leaflet of compound leaves.
A. Statement l is true and statement ll is false.
B. Statement l is false and statement ll is true.
C. Both statement I and II is true.
D. Both statement I and II is false.
Answer: C Explanation
14. Venation is arrangement of
A. Leaflets on stem
B. Vein and Veinlets on leaf blade
C. Leaves on originating order.
D. Vein and Veinlets on leaf petiole.
Answer: B Explanation
15. Consider the following statement and select the correct code
1. Veinlets form a network on leaf lamina, called as Reticulate venation.
2. Reticulate venation is found in Monocotyledon leaf.
3. Veins are run parallel to each other on leaf lamina , called as Parallel venation.
4.Parallel venation is found in Dicotyledon leaf.
A. 1 and 3 B. 2 and 4
C. 1 and 2 D. 3 and 4
Answer: A Explanation
16. The arrangement of leaves on stem or branches is called as
A. Venation B. Phyllotaxy
C.Placentation D. Aestivation
Answer: B Explanation
17. Which one of the following is not a type of phyllotaxy.
A. Reticulate B. Alternate
C. Opposite. D. Whorled
Answer: A Explanation
18. In alternate phyllotaxy, leaves are arranged on stem in alternate manner as in
A. Mustard
B. China rose
C. Sun flower
D. All of the above
19. Consider the following statement and select the correct code
1. In opposite phyllotaxy, two leaves are present at each node and both leaves are originated at opposite to each other.
2. More than two leaves are present in a whorl at each node in Whorled phyllotaxy.
20. Whorled phyllotaxy is present in
A. Alstonia B. Calotropis
C. Guava D. Neem
Answer: A Explanation
21. In which of the following pair of plant, opposite phyllotaxy is present.
A. Mustard and calotropis
B. Mustard and Guava
C. China rose and Guava
D. Guava and Calotropis
Answer: A Explanation
22. In the given Diagram, identify the letter X and Y.
X Y
A. Leaf base Axillary bud
B. Axillary bud. Leaf base
C. Leaf blade Leaf base
D. Axillary bud. Leaf blade
Answer: A
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