🎯 NEET 2026 Daily Practice Problem (DPP)
Topic: Morphology of Flowering Plants | 20 High-Yield MCQs
Q1. Pneumatophores are found in:
- Vegetation which is found in marshy and saline lake
- Vegetation which is found in acidic soil
- Xerophytes
- Epiphytes
✅ View Answer & Explanation
Correct Answer: (1) Vegetation found in marshy and saline lake
Explanation: Pneumatophores (respiratory roots) are found in mangroves (e.g., Rhizophora) growing in swampy areas to get oxygen for respiration.
Q2. Stems modified into flat green organs performing the functions of leaves are known as:
- Phyllodes
- Phylloclades
- Scales
- Cladodes
✅ View Answer & Explanation
Correct Answer: (2) Phylloclades
Explanation: Phylloclades are flattened (Opuntia) or cylindrical (Euphorbia) green stems of indefinite growth performing photosynthesis. Phyllode is a modified petiole.
Q3. Edible part of mango is:
- Endocarp
- Receptacle
- Epicarp
- Mesocarp
✅ View Answer & Explanation
Correct Answer: (4) Mesocarp
Explanation: Mango is a drupe fruit. The outer epicarp is skin, middle mesocarp is fleshy and edible, and inner endocarp is stony.
Q4. Placentation in which ovules develop on the inner wall of the ovary or in peripheral part is:
- Free central
- Basal
- Axile
- Parietal
✅ View Answer & Explanation
Correct Answer: (4) Parietal
Explanation: In parietal placentation, the ovules develop on the inner wall of the ovary. Example: Mustard and Argemone.
Q5. Which of the following is correct regarding the aestivation in the family Fabaceae?
- Valvate
- Twisted
- Imbricate
- Vexillary
✅ View Answer & Explanation
Correct Answer: (4) Vexillary
Explanation: Fabaceae (Papilionaceae) shows Vexillary aestivation (1 Standard, 2 Wings, 2 Keel petals). Also called Papilionaceous.
Q6. Coconut fruit is a:
- Berry
- Nut
- Capsule
- Drupe
✅ View Answer & Explanation
Correct Answer: (4) Drupe
Explanation: Coconut is a fibrous drupe developed from monocarpellary superior ovary.
Q7. Which one of the following statements is correct?
- The seed in grasses is not endospermic
- Mango is a parthenocarpic fruit
- A proteinaceous aleurone layer is present in maize grain
- A sterile pistil is called a staminode
✅ View Answer & Explanation
Correct Answer: (3) A proteinaceous aleurone layer is present in maize grain
Explanation: Grass seeds are endospermic. Mango is a fertilized fruit. Sterile stamen is staminode (not pistil).
Q8. The term ‘Polyadelphous’ is related to:
- Gynoecium
- Androecium
- Corolla
- Calyx
✅ View Answer & Explanation
Correct Answer: (2) Androecium
Explanation: Polyadelphous condition means stamens are united into more than two bundles (e.g., Citrus).
Q9. In Bougainvillea, thorns are the modifications of:
- Adventitious root
- Stem
- Leaf
- Stipules
✅ View Answer & Explanation
Correct Answer: (2) Stem
Explanation: Thorns in Bougainvillea and Citrus are axillary stem modifications for protection.
Q10. Radial symmetry is found in the flowers of:
- Brassica
- Trifolium
- Pisum
- Cassia
✅ View Answer & Explanation
Correct Answer: (1) Brassica
Explanation: Brassica (Mustard) has actinomorphic (radial) symmetry. Pea, Bean, Cassia have zygomorphic (bilateral) symmetry.
Q11. Cotyledon of maize grain is called:
- Coleoptile
- Scutellum
- Plumule
- Coleorhiza
✅ View Answer & Explanation
Correct Answer: (2) Scutellum
Explanation: In monocots (grasses), the large shield-shaped single cotyledon is known as Scutellum.
Q12. Tricarpellary, syncarpous gynoecium is found in flowers of:
- Fabaceae
- Poaceae
- Liliaceae
- Solanaceae
✅ View Answer & Explanation
Correct Answer: (3) Liliaceae
Explanation: Family Liliaceae is characterized by Tricarpellary, syncarpous, superior ovary with axile placentation.
Q13. Which of the following is not a stem modification?
- Tendrils of cucumber
- Flattened structures of Opuntia
- Pitcher of Nepenthes
- Thorns of Citrus
✅ View Answer & Explanation
Correct Answer: (3) Pitcher of Nepenthes
Explanation: The pitcher of Nepenthes (Pitcher plant) is a modification of the Leaf (lamina), not the stem.
Q14. The standard petal of a papilionaceous corolla is also called:
- Vexillum
- Corona
- Carina
- Pappus
✅ View Answer & Explanation
Correct Answer: (1) Vexillum
Explanation: The largest posterior petal is called Standard or Vexillum. Lateral petals are Wings/Alae, and anterior fused petals are Keel/Carina.
Q15. The morphological nature of the edible part of coconut is:
- Cotyledon
- Endosperm
- Pericarp
- Perisperm
✅ View Answer & Explanation
Correct Answer: (2) Endosperm
Explanation: Coconut water is free-nuclear endosperm, and the white kernel is cellular endosperm.
Q16. Stems are modified into tendrils in:
- Pumpkins and Watermelons
- Sweet Pea and Garden Pea
- Australian Acacia
- Opuntia
✅ View Answer & Explanation
Correct Answer: (1) Pumpkins and Watermelons
Explanation: In Gourds (Cucumber, Pumpkin, Watermelon) and Grapevines, axillary buds are modified into stem tendrils. In Peas, leaves are modified into tendrils.
Q17. In Cymose inflorescence, the main axis:
- Has unlimited growth
- Bears a solitary flower
- Has unlimited growth but lateral branches end in flowers
- Terminates in a flower
✅ View Answer & Explanation
Correct Answer: (4) Terminates in a flower
Explanation: In Cymose, the main axis ends in a flower (determinate growth). In Racemose, it continues to grow.
Q18. Epipetalous stamens with free filaments are found in:
- Asteraceae
- Liliaceae
- Solanaceae
- Fabaceae
✅ View Answer & Explanation
Correct Answer: (3) Solanaceae
Explanation: In Solanaceae (e.g., Brinjal, Chilli), stamens are attached to the petals (Epipetalous). In Liliaceae, they are Epiphyllous.
Q19. Persistent calyx is the character of:
- Fabaceae
- Solanaceae
- Liliaceae
- Brassicaceae
✅ View Answer & Explanation
Correct Answer: (2) Solanaceae
Explanation: The calyx (sepals) persists and remains attached to the fruit (e.g., Brinjal, Tomato, Chilli).
Q20. When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:
- Vexillary
- Imbricate
- Twisted
- Valvate
✅ View Answer & Explanation
Correct Answer: (2) Imbricate
Explanation: In Imbricate aestivation (e.g., Cassia, Gulmohar), margins overlap but not in any particular direction. In twisted, they overlap regularly.