Morphology of flower MCQs With Answer

Morphology of flower MCQs With Answer provides B. Pharm students a focused, exam-ready guide to floral structure and terminology essential in pharmacognosy and medicinal plant identification. This concise, keyword-rich introduction covers flower parts, whorls, symmetry, placentation, inflorescence types, and applied examples like clove and saffron, helping pharmacy undergraduates recognize drug-bearing floral organs. Understanding morphology aids in correct botanical identification, quality control of plant materials and interpretation of morphological descriptions in pharmacopeias. These MCQs are crafted to reinforce conceptual depth, clinical relevance and memorization. Now let’s test your knowledge with 50 MCQs on this topic.

Q1. Which statement best defines morphology of flower?

• Study of external structure and parts of flowers
• Study of internal cellular anatomy of flowers
• Study of biochemical pathways in floral tissues
• Study of genetic inheritance of flower color

Correct Answer: Study of external structure and parts of flowers

Q2. Which set lists the four floral whorls in a typical complete flower?

• Calyx, corolla, androecium, gynoecium
• Sepals, bracts, ovules, receptacle
• Petiole, lamina, petal, stamen
• Leaf, stem, root, flower

Correct Answer: Calyx, corolla, androecium, gynoecium

Q3. What is the collective term for the sepals of a flower?

• Calyx
• Corolla
• Androecium
• Gynoecium

Correct Answer: Calyx

Q4. What is the collective term for the petals of a flower?

• Corolla
• Calyx
• Perianth
• Pericarp

Correct Answer: Corolla

Q5. The collective term for all stamens in a flower is:

• Androecium
• Gynoecium
• Perianth
• Bracteome

Correct Answer: Androecium

Q6. The collective term for all carpels in a flower is:

• Gynoecium
• Androecium
• Corolla
• Receptacle

Correct Answer: Gynoecium

Q7. Which term describes an ovary positioned above the point of attachment of other floral parts?

• Superior ovary
• Inferior ovary
• Half-inferior ovary
• Epigynous ovary

Correct Answer: Superior ovary

Q8. Which term describes an ovary that is below the attachment of other floral parts?

• Inferior ovary
• Superior ovary
• Hypogynous ovary
• Perigynous ovary

Correct Answer: Inferior ovary

Q9. A flower with radial symmetry is termed:

• Actinomorphic
• Zygomorphic
• Asymmetric
• Pseudomorphic

Correct Answer: Actinomorphic

Q10. A flower with bilateral symmetry (one plane of symmetry) is called:

• Zygomorphic
• Actinomorphic
• Polymorphic
• Isomorphic

Correct Answer: Zygomorphic

Q11. Which inflorescence type has an elongated main axis with pedicellate flowers maturing acropetally?

• Raceme
• Umbel
• Capitulum
• Cyme

Correct Answer: Raceme

Q12. Which inflorescence is characteristic of the Apiaceae family?

• Umbel
• Spike
• Raceme
• Panicle

Correct Answer: Umbel

Q13. The composite head or capitulum is a diagnostic inflorescence of which family?

• Asteraceae
• Fabaceae
• Brassicaceae
• Cucurbitaceae

Correct Answer: Asteraceae

Q14. Which type of placentation has ovules attached to a central axis with septa partitioning the ovary?

• Axile placentation
• Parietal placentation
• Basal placentation
• Free-central placentation

Correct Answer: Axile placentation

Q15. Which placentation type is typical for many members of Cucurbitaceae?

• Parietal placentation
• Axile placentation
• Free-central placentation
• Basal placentation

Correct Answer: Parietal placentation

Q16. Free-central placentation is characterized by:

• Ovules attached to a central column with no septa
• Ovules attached to the ovary wall
• Single ovule at the base
• Ovules attached to septa

Correct Answer: Ovules attached to a central column with no septa

Q17. Which term describes placentation where a single ovule is attached at the base of the ovary?

• Basal placentation
• Axile placentation
• Parietal placentation
• Free-central placentation

Correct Answer: Basal placentation

Q18. Vexillary aestivation is a type of petal arrangement seen in which corolla?

• Papilionaceous corolla of Fabaceae
• Tubular corolla of Lamiaceae
• Rotate corolla of Solanaceae
• Campanulate corolla of Campanulaceae

Correct Answer: Papilionaceous corolla of Fabaceae

Q19. A papilionaceous corolla consists of which three distinct parts?

• Standard (banner), wings, and keel
• Tube, limb, and spur
• Lobe, claw, and filament
• Banner, column, and anther

Correct Answer: Standard (banner), wings, and keel

Q20. Which family commonly shows didynamous stamens (two long and two short)?

• Lamiaceae
• Fabaceae
• Brassicaceae
• Apiaceae

Correct Answer: Lamiaceae

Q21. Tetradynamous stamens (four long and two short) are typical of which family?

• Brassicaceae
• Asteraceae
• Fabaceae
• Solanaceae

Correct Answer: Brassicaceae

Q22. A hypogynous flower has floral parts attached where in relation to the ovary?

• Below the ovary (superior ovary)
• Above the ovary (inferior ovary)
• At the rim of a hypanthium
• Directly to the ovule

Correct Answer: Below the ovary (superior ovary)

Q23. In an epigynous flower the petals and stamens are attached:

• Above the ovary (ovary inferior)
• Below the ovary (ovary superior)
• To the ovary wall directly
• Only to the receptacle

Correct Answer: Above the ovary (ovary inferior)

Q24. Perigynous flowers are associated with which floral structure?

• Hypanthium (floral cup) with parts attached to its rim
• Completely free perianth parts
• Inferior ovary fused with receptacle
• Central column supporting ovules

Correct Answer: Hypanthium (floral cup) with parts attached to its rim

Q25. A complete flower is one that contains which of the following?

• All four whorls: calyx, corolla, androecium, gynoecium
• Only reproductive whorls
• Neither corolla nor calyx
• Only sterile floral parts

Correct Answer: All four whorls: calyx, corolla, androecium, gynoecium

Q26. An incomplete flower lacks:

• One or more of the four main whorls
• Both stamens and carpels always
• Only sepals but always has petals
• Only bracts and pedicels

Correct Answer: One or more of the four main whorls

Q27. A perfect flower is defined as:

• Bisexual, having both stamens and carpels
• Unisexual and male only
• Unisexual and female only
• Sterile and lacking reproductive organs

Correct Answer: Bisexual, having both stamens and carpels

Q28. A plant that bears both male and female flowers on the same individual is termed:

• Monoecious
• Dioecious
• Hermaphroditic
• Asexual

Correct Answer: Monoecious

Q29. A species with male and female flowers on separate plants is called:

• Dioecious
• Monoecious
• Bisexual
• Polygamous

Correct Answer: Dioecious

Q30. The term “syngenesious” refers to which androecial condition seen in Asteraceae?

• Anthers fused into a tube
• Filaments fused into a column
• Anthers free and separate
• Stamens reduced or absent

Correct Answer: Anthers fused into a tube

Q31. Epipetalous stamens are attached to which floral part?

• Petals
• Sepals
• Receptacle
• Ovary wall

Correct Answer: Petals

Q32. Connation refers to:

• Fusion of similar floral organs
• Fusion of dissimilar organs
• Separation of floral parts
• Abscission of petals

Correct Answer: Fusion of similar floral organs

Q33. A racemose inflorescence is characterized by which growth pattern?

• Indeterminate main axis with acropetal flower maturation
• Determinate main axis with terminal flower
• Basipetal flower maturation with cymose branches
• Solitary flowers only

Correct Answer: Indeterminate main axis with acropetal flower maturation

Q34. Cymose inflorescence differs from racemose by having:

• Determinate growth with terminal flower formation
• Indeterminate growth and basal flowering
• Only sessile flowers in a head
• All flowers opened simultaneously

Correct Answer: Determinate growth with terminal flower formation

Q35. A floral diagram is used to depict:

• Position, number and arrangement of floral parts
• Chemical constituents of floral oils
• Microscopic anatomy of ovules
• Genetic sequence of pollination genes

Correct Answer: Position, number and arrangement of floral parts

Q36. The stigma is the floral structure primarily responsible for:

• Receiving pollen
• Protecting the ovary
• Producing nectar
• Supporting petals

Correct Answer: Receiving pollen

Q37. After fertilization, an ovule develops into a:

• Seed
• Stigma
• Style
• Peduncle

Correct Answer: Seed

Q38. Self-pollination within the same flower is termed:

• Autogamy
• Xenogamy
• Geitonogamy
• Allogamy

Correct Answer: Autogamy

Q39. Cross-pollination between different plants of the same species is called:

• Xenogamy
• Autogamy
• Geitonogamy
• Apogamy

Correct Answer: Xenogamy

Q40. The typical inflorescence of Brassicaceae (mustard family) is:

• Raceme
• Umbel
• Head (capitulum)
• Solitary flower

Correct Answer: Raceme

Q41. The modified petal in Orchidaceae that often serves as a landing platform for pollinators is called:

• Labellum
• Corolla tube
• Androecium
• Hypanthium

Correct Answer: Labellum

Q42. The labellum in orchids is homologous to which floral whorl?

• Petal
• Sepal
• Stamen
• Carpel

Correct Answer: Petal

Q43. Which floral condition is associated with a prominent hypanthium?

• Perigynous flower
• Hypogynous flower
• Epigynous flower
• Monoecious inflorescence

Correct Answer: Perigynous flower

Q44. Which spice is obtained from the dried unopened flower buds of Syzygium aromaticum?

• Clove
• Saffron
• Cardamom
• Turmeric

Correct Answer: Clove

Q45. Saffron, a valuable medicinal and culinary product, is derived from which floral part of Crocus sativus?

• Stigma
• Petal
• Sepal
• Ovule

Correct Answer: Stigma

Q46. Chamomile (Matricaria/Chamomilla) used in herbal medicine is harvested for which floral structure?

• Flower heads (capitula)
• Only the corolla lobes
• Stem internodes
• Underground rhizomes

Correct Answer: Flower heads (capitula)

Q47. The keel, wings and standard are parts of which floral type important in identification of many medicinal legumes?

• Papilionaceous corolla
• Campanulate corolla
• Tubular corolla
• Labiate corolla

Correct Answer: Papilionaceous corolla

Q48. The term for fused petals forming a tubular corolla is:

• Gamopetalous
• Choripetalous
• Gamosepalous
• Apopetalous

Correct Answer: Gamopetalous

Q49. The term “choripetalous” indicates which condition of the corolla?

• Petals are free (not fused)
• Petals fused into tube
• Petals absent
• Petals reduced to scales

Correct Answer: Petals are free (not fused)

Q50. A modified leaf often found subtending a flower or inflorescence, sometimes mistaken for a petal, is called a:

• Bract
• Stipule
• Rachilla
• Perianth

Correct Answer: Bract

G S Sachin

I am a Registered Pharmacist under the Pharmacy Act, 1948, and the founder of PharmacyFreak.com. I hold a Bachelor of Pharmacy degree from Rungta College of Pharmaceutical Science and Research. With a strong academic foundation and practical knowledge, I am committed to providing accurate, easy-to-understand content to support pharmacy students and professionals. My aim is to make complex pharmaceutical concepts accessible and useful for real-world application.

Mail- Sachin@pharmacyfreak.com