Plant Kingdom

Q1. Laminaria (kelp) and Fucus (rock weed) are the examples of:

  1. Green algae.
  2. Brown algae.
  3. Golden brown algae
  4. Red algae.
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Ans: 2. Brown algae.

Q2. If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm:

  1. 36
  2. 18
  3. 54
  4. 72
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Ans: 3. 54
Explanation:
Endosperm is formed after fusion between a haploid male gamete and diploid secondary nucleus. Thus, endosperm has triploid
nucleus; which will have three times the number of chromosomes as in a haploid nucleus.

Q3. Diploid sporophyte is dominant phase in the life cycle of which plant?

  1. Angiosperm.
  2. Bryophlta.
  3. Pteridophyta.
  4. Algae.
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Ans: 1. Angiosperm.

Q4. Cyanobacteria are classified under:

  1. Protista.
  2. Plantae.
  3. Monera.
  4. Algae.
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Ans: 3. Monera.

Explanation:
Cyanobacteria are classified under Kingdom Monera as they are prokaryotes. They are generally photosynthetic in nature and contain
pigments, chlorophyll a, and carotenoids, etc. Nostoc and Oscillatoria are examples of this category.

Q5. The giant Redwood tree (Sequoia sempervirens) is a/ an:

  1. Angiosperm.
  2. Free fern.
  3. Pteridophyte.
  4. Gymnosperm.
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Ans: 4. Gymnosperm.

Explanation:
Redwood trees is a Gymnosperm which have earned many sobriquets; like tallest tree, oldest tree, largest by trunk volume, etc.

Q6. Which one of the following is a living fossil?

  1. Pinus longifolia.
  2. Dalbergia sissoo.
  3. Mirabilis.
  4. Ginkgo biloba.
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Ans: 4. Ginkgo biloba.

Q7. Peat moss is another name of:

  1. Riccia.
  2. Sphagnum.
  3. Marchantia.
  4. Dryopteris.
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Ans: 2. Sphagnum.

Q8. Iodine is found in:

  1. Spirogyra.
  2. Laminaria.
  3. Polysiphonia.
  4. Chlorella.
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Ans: 2. Laminaria.

Q9. Largest sperms in the plant world are found in:

  1. Pinus.
  2. Banyan.
  3. Cycas.
  4. Thuja.
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Ans: 3. Cycas.

Q10. Which of the following is not among cryptogams?

  1. Algae.
  2. Bryophyta.
  3. Pteridophyta.
  4. Gymnosperm.
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Ans: 4. Gymnosperm.

Q11. Which plays an important role in the dispersal of spores in Funaria?

  1. Sporogonium.
  2. Capsule.
  3. Peristome and annulus.
  4. Operculum.
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Ans: 3. Peristome and annulus.

Q12. Transgenic plants are the ones:

  1. Grown in artificial medium after hybridization in the field.
  2. Produced by a somatic embryo in artificial medium.
  3. Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell.
  4. Produced after protoplast fusion in artificial medium.
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Ans: 3. Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell.

Q13. Sperms of both Funaria and Pteris were released together near the archegonia of Pteris.Only Pteris sperms enter
the archegonia as:

  1. Pteris archegonia repel Funaria sperms.
  2. Funaria sperms get killed by Pteris sperms.
  3. Funaria sperms are less mobile.
  4. Pteris archegonia release chemical to attract its sperms.
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Ans: 4. Pteris archegonia release chemical to attract its sperms.

Q14. In a monoecious plant:

  1. Male and female sex organs are on the same individual.
  2. Male and female gametes are of two morphologically distinct types.
  3. Male and female sex organs are on different individuals.
  4. All the stamens are fused to form one unit.
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Ans: 1. Male and female sex organs are on the same individual.

Q15. Which of the following play an important role in soil formation?

  1. Algae.
  2. Bryophyta.
  3. Pteridophyta.
  4. Gymnosperm.
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Ans: 2. Bryophyta.

Q16. Antheridia and Archegonia are sex organs of:

  1. Moss.
  2. Mucor.
  3. Spirogyra.
  4. Puccinia.
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Ans: 1. Moss.

Q17. Spirullina is used in medicines, from which type of plants it is derived?

  1. Algae.
  2. Bryophytes.
  3. Pteridophytes.
  4. Fungi.
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Ans: 1. Algae.

Q18. Which one of the following is a vascular cryptogram?

  1. Cedrus.
  2. Equisetum.
  3. Ginkgo.
  4. Marchantia.
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Ans: 2. Equisetum.

Q19. Multicellular branched rhizoids and leafy gametophytes are characteristics of:

  1. All bryophytes.
  2. Some bryophytes.
  3. All pteridophytes.
  4. Some pteridophytes.
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Ans: 2. Some bryophytes.

Q20. Isogamous condition with non-flagellated gametes is found in:

  1. Chlamydomonas.
  2. Spirogyra.
  3. Volvox.
  4. Fucus.
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Ans: 2. Spirogyra.

Q21. In fern, spores are formed in:

  1. Sporangium.
  2. Archegonium.
  3. Oogonium.
  4. Stomium.
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Ans: 1. Sporangium.

Q22. In Pinus, the pollen grain has 6 chromosomes then its endosperm will have the chromosome:

  1. 12
  2. 18
  3. 6
  4. 24
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Ans: 3. 6

Q23. Chloroplast of Chlamydomonas is:

  1. Stellate.
  2. Cup-shaped.
  3. Collar-shaped.
  4. Spiral.
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Ans: 2. Cup-shaped.

Q24. In which of the following would you place the plants having vascular tissue, lacking seeds?

  1. Algae.
  2. Bryophytes.
  3. Pteridophytes.
  4. Gymnosperms.
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Ans: 3. Pteridophytes.

Q25. Ulothrix can be described as a:

  1. Non-motile colonial alga lacking zoospores.
  2. Filamentous alga lacking flagellated reproductive stages.
  3. Membranous alga producing zoospores.
  4. Filamentous alga with flagellated reproductive stages.
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Ans: 4. Filamentous alga with flagellated reproductive stages.

Q26. Phycoerythrin, chlorophyll a and chlorophylld are characteristics of:

  1. Chlorophyceae.
  2. Rhodophyceae.
  3. Phaeophyceae.
  4. Cyanophyceae.
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Ans: 2. Rhodophyceae.

Q27. A water fern which is used as a green manure in rice fields is:

  1. Mucor.
  2. Salvinia.
  3. Aspergillus.
  4. Azolla.
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Ans: 4. Azolla.

Q28. Which of the following shows no segregation of plant parts?

  1. Algae.
  2. Bryophlta.
  3. Pteridophyta.
  4. Gymnosperm.
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Ans: 1. Algae

Q29. A plant having seeds but lacking flowers and fruits belongs to:

  1. Pteridophytes.
  2. Mosses.
  3. Ferns.
  4. Gymnosperms.
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Ans: 4. Gymnosperms.

Q30. In Pinus / gymnosperms, the haploid structure are:

  1. Megaspore, endosperm and embryo.
  2. Megaspore, pollen grain and endosperm.
  3. Megaspore, integument and root.
  4. Pollen grain, leaf and root.
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Ans: 2. Megaspore, pollen grain and endosperm.