Plant Kingdom – Daily Practice Problem (DPP)

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🎯 NEET 2026 Daily Practice Problem (DPP)

Topic: Plant Kingdom | 20 High-Yield MCQs

Q1. Natural system of classification for flowering plants was given by:

  1. Carolus Linnaeus
  2. Bentham and Hooker
  3. Engler and Prantl
  4. R.H. Whittaker
✅ View Answer & Explanation

Correct Answer: (2) Bentham and Hooker
Explanation: George Bentham and Joseph Dalton Hooker proposed the natural system of classification based on natural affinities, ultrastructure, anatomy, embryology, and phytochemistry.

Q2. Phylogenetic classification systems are based on:

  1. Floral characters
  2. Evolutionary relationships
  3. Morphological characters
  4. Chemical constituents
✅ View Answer & Explanation

Correct Answer: (2) Evolutionary relationships
Explanation: Phylogenetic systems assume that organisms belonging to the same taxa have a common ancestor.

Q3. Which of the following algae contains Mannitol as reserve food material?

  1. Ectocarpus
  2. Gracilaria
  3. Volvox
  4. Ulothrix
✅ View Answer & Explanation

Correct Answer: (1) Ectocarpus
Explanation: Ectocarpus is a Brown Alga (Phaeophyceae). Brown algae store food as Laminarin or Mannitol.

Q4. Agar, a commercial product used to grow microbes and in ice-creams/jellies, is obtained from:

  1. Gelidium and Gracilaria
  2. Chara and Volvox
  3. Laminaria and Sargassum
  4. Ectocarpus and Fucus
✅ View Answer & Explanation

Correct Answer: (1) Gelidium and Gracilaria
Explanation: These are Red Algae (Rhodophyceae) that produce Agar.

Q5. Which of the following pigments is characteristic of Rhodophyceae (Red Algae)?

  1. Fucoxanthin
  2. Chlorophyll b
  3. r-phycoerythrin
  4. Chlorophyll c
✅ View Answer & Explanation

Correct Answer: (3) r-phycoerythrin
Explanation: The red color of red algae is due to the predominance of the red pigment, r-phycoerythrin. Fucoxanthin is found in Brown algae.

Q6. Bryophytes are called ‘Amphibians of the Plant Kingdom’ because:

  1. They live in soil but depend on water for sexual reproduction
  2. They live in water but depend on soil for asexual reproduction
  3. They have swimming sperms
  4. They can live in both water and land equally
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Correct Answer: (1) They live in soil but depend on water for sexual reproduction
Explanation: Water is essential for the transfer of antherozoids (male gametes) to the archegonium.

Q7. The predominant stage of the life cycle of a moss is:

  1. Sporophyte
  2. Gametophyte
  3. Protonema
  4. Leafy stage
✅ View Answer & Explanation

Correct Answer: (2) Gametophyte
Explanation: The main plant body of bryophytes is haploid (gametophyte). It consists of two stages: Protonema and Leafy stage.

Q8. Peat Moss is the common name for:

  1. Sphagnum
  2. Funaria
  3. Polytrichum
  4. Marchantia
✅ View Answer & Explanation

Correct Answer: (1) Sphagnum
Explanation: Sphagnum provides peat that has long been used as fuel and packing material for trans-shipment of living material due to its water holding capacity.

Q9. In Pteridophytes, the main plant body is:

  1. Haploid Gametophyte
  2. Diploid Gametophyte
  3. Diploid Sporophyte
  4. Haploid Sporophyte
✅ View Answer & Explanation

Correct Answer: (3) Diploid Sporophyte
Explanation: Unlike Bryophytes, the dominant phase in Pteridophytes is the Sporophyte which is differentiated into true root, stem, and leaves.

Q10. Which of the following Pteridophytes is heterosporous?

  1. Dryopteris and Pteris
  2. Selaginella and Salvinia
  3. Equisetum and Adiantum
  4. Psilotum and Lycopodium
✅ View Answer & Explanation

Correct Answer: (2) Selaginella and Salvinia
Explanation: Heterospory (production of two kinds of spores: macro and micro) is a precursor to the seed habit. Selaginella and Salvinia are classic examples.

Q11. Coralloid roots associated with nitrogen-fixing cyanobacteria are found in:

  1. Pinus
  2. Cycas
  3. Cedrus
  4. Sequoia
✅ View Answer & Explanation

Correct Answer: (2) Cycas
Explanation: Cycas has specialized roots called coralloid roots that have a symbiotic association with N2-fixing cyanobacteria. Pinus has mycorrhiza.

Q12. The giant redwood tree (Sequoia) belongs to:

  1. Angiosperms
  2. Free ferns
  3. Pteridophytes
  4. Gymnosperms
✅ View Answer & Explanation

Correct Answer: (4) Gymnosperms
Explanation: Sequoia sempervirens is one of the tallest tree species and is a Gymnosperm.

Q13. In Gymnosperms, the endosperm is:

  1. Triploid
  2. Haploid
  3. Diploid
  4. Tetraploid
✅ View Answer & Explanation

Correct Answer: (2) Haploid
Explanation: In Gymnosperms, endosperm is formed before fertilization and is a haploid tissue. In Angiosperms, it is triploid (formed after double fertilization).

Q14. Double fertilization is a unique event to:

  1. Gymnosperms
  2. Pteridophytes
  3. Angiosperms
  4. Bryophytes
✅ View Answer & Explanation

Correct Answer: (3) Angiosperms
Explanation: Double fertilization (Syngamy + Triple Fusion) is a characteristic feature of Angiosperms.

Q15. Volvox and Spirogyra show which type of life cycle?

  1. Diplontic
  2. Haplontic
  3. Haplo-diplontic
  4. Diplo-haplontic
✅ View Answer & Explanation

Correct Answer: (2) Haplontic
Explanation: Most algae like Volvox and Spirogyra show Haplontic life cycle. Fucus (an alga) is an exception showing Diplontic life cycle.

Q16. The gametophyte is not an independent, free-living generation in:

  1. Polytrichum
  2. Adiantum
  3. Marchantia
  4. Pinus
✅ View Answer & Explanation

Correct Answer: (4) Pinus
Explanation: In Gymnosperms (Pinus) and Angiosperms, the gametophytes do not have an independent free-living existence. They remain within the sporangia.

Q17. Which of the following is responsible for the formation of ‘Prothallus’?

  1. Germination of spores in Pteridophytes
  2. Germination of seeds in Gymnosperms
  3. Fusion of gametes in Bryophytes
  4. Development of zygote in Algae
✅ View Answer & Explanation

Correct Answer: (1) Germination of spores in Pteridophytes
Explanation: In Pteridophytes, spores germinate to give rise to inconspicuous, small, multicellular, free-living, photosynthetic thalloid gametophytes called prothallus.

Q18. Floridean starch has a structure similar to:

  1. Amylopectin and Glycogen
  2. Mannitol and Algin
  3. Laminarin and Cellulose
  4. Starch and Cellulose
✅ View Answer & Explanation

Correct Answer: (1) Amylopectin and Glycogen
Explanation: Floridean starch is the stored food in Rhodophyceae, structurally very similar to amylopectin and glycogen.

Q19. Male and female gametophytes do not have an independent free-living existence in:

  1. Pteridophytes
  2. Algae
  3. Bryophytes
  4. Gymnosperms
✅ View Answer & Explanation

Correct Answer: (4) Gymnosperms
Explanation: In Gymnosperms and Angiosperms, gametophytes are dependent on the sporophyte.

Q20. Select the mismatch:

  1. Cycas – Dioecious
  2. Salvinia – Heterosporous
  3. Equisetum – Homosporous
  4. Pinus – Dioecious
✅ View Answer & Explanation

Correct Answer: (4) Pinus – Dioecious
Explanation: Pinus is monoecious (male and female cones on the same tree), whereas Cycas is dioecious (on different trees).

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