Morphology of Flowering Plants MCQs with Explanations
Below are a few MCQs to help you practice and understand the core concepts of Morphology of Flowering Plants.
Q1. Which of the following is correct w.r.t racemose inflorescence?
A. Main axis continues to grow
B. Flowers are borne in a basipetal order
C. Main axis terminates in a flower
D. Growth of main axis is limited
Answer: A
Explanation: In racemose inflorescence, the main axis continues to grow, and flowers are arranged in acropetal order (from base to top).
Q2. Flowers cannot be divided into two similar halves by any vertical plane passing through the centre in:
A. Canna
B. Cassia
C. Datura
D. Mustard
Answer: A
Explanation: Canna flowers are asymmetrical, meaning they cannot be divided into two identical halves by a vertical plane.
Q3. Stamens are united into two bundles in:
A. China rose
B. Beans
C. Citrus
D. Brassica
Answer: A
Explanation: In China rose (Hibiscus), the stamens are united to form two bundles, a feature of the Malvaceae family.
Q4. In Bougainvillea, thorns are modified:
A. Leaf apex
B. Stem
C. Root
D. Leaf lamina
Answer: B
Explanation: In Bougainvillea, thorns are modified stems that help in protection and support.
Q5. Alternate type phyllotaxy is present in:
A. China rose
B. Calotropis
C. Alstonia
D. Guava
Answer: D
Explanation: Guava has alternate phyllotaxy, where leaves are arranged alternately on the stem.
Q6. Swollen leaf base found in some leguminous plants is called:
A. Leaf blade
B. Petiole
C. Stipules
D. Pulvinus
Answer: D
Explanation: In leguminous plants, the swollen leaf base is called a pulvinus, which helps in leaf movement.
Q7. How many seeds are endospermic? Gram, Pea, Bean, Wheat, Castor, Orchid
A. Two
B. Three
C. Four
D. Five
Answer: B
Explanation: Endospermic seeds contain a well-developed endosperm that nourishes the embryo. For example, in beans and peas, the seeds are non-endospermic, while wheat and castor are endospermic.
Q8. Which of the following families includes plants with leaves having parallel venation?
A. Cruciferae
B. Compositae
C. Graminae
D. Malvaceae
Answer: C
Explanation: The Graminae family (grasses) includes plants with leaves showing parallel venation.
Q9. Match List I with List II.
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List I
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List II
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A. K
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I. Zygomorphic
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B. C
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II. Superior ovary
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C. G
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III. Calyx
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D.%
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IV. Corolla
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Choose the correct answer from the options given below:
A. A-I, B-III, C-IV, D-II
B. A-II, B-I, C-III, D-IV
C. A-III, B-IV, C-II, D-I
D. A-II, B-III, C-IV, D-I
Answer: A
Explanation: The match correctly identifies the floral parts based on the types of symmetry and structure.
Q10. Which of the following families possess epipetalous condition and monoadelphous stamens?
A. Leguminosae
B. Malvaceae
C. Graminae
D. Cruciferae
Answer: B
Explanation: Malvaceae plants have epipetalous stamens and monoadelphous condition where stamens are fused into one bundle.
Q11. Find the incorrectly matched pair.
A. Graminae : Grass family
B. Malvaceae : Cotton family
C. Cruciferae : Pea family
D. Compositae : Sunflower family
Answer: C
Explanation: The Cruciferae family is also known as the mustard family, not the pea family.
Q12. Match List I with List II.
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List I
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List II
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A. Thimble-like
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I. Region of meristematic activity
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B. Thread-like
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II. Region of maturation
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C. Zone of Differentiation
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III. Root cap
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D. Cells are very small, thin walled and with dense
protoplasm
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IV. Root hair
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Choose the correct answer from the options given below:
A. A-I, B-III, C-IV, D-II
B. A-II, B-I, C-IV, D-III
C. A-III, B-I, C-II, D-IV
D. A-III, B-IV, C-II, D-I
Answer: C
Explanation: This match correctly associates the structure and region of root growth.
Q13. What is true for the floral diagram given below?
A. Flower belongs to Malvaceae family
B. Ovary is multilocular
C. It is found in the Leguminoceae family
D. The flower is bracteate
Answer: A
Explanation: The floral diagram indicates a flower belonging to the Malvaceae family, showing a multilocular ovary.
Q14. Palmately compound leaves are found in:
A. Alstonia
B. Guava
C. Silk cotton
D. Neem
Answer: C
Explanation: Palmately compound leaves are found in silk cotton trees, where multiple leaflets arise from a single point at the tip of the petiole.
Q15. Identify the correct features of mango and coconut fruits.
I. In both, fruit is a drupe.
II. Endocarp is edible in both.
III. Mesocarp in coconut is fibrous, and in mango is fleshy.
IV. In both, fruit develops from monocarpellary superior ovaries.
Choose the most appropriate answer from the options given below:
A. I, II and III only
B. I and IV only
C. I and II only
D. I, III and IV only
Answer: D
Explanation: Both mango and coconut are drupes, and the mesocarp in coconut is fibrous while it is fleshy in mango. They both develop from monocarpellary superior ovaries.
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