Diversity of Living Organisms – Plant Kingdom Quiz - ICSE Class 11 Biology

Free practice quiz: Diversity of Living Organisms – Plant Kingdom (ICSE Class 11 Biology). 45 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. Which of the following algae exhibits the highest degree of cellular differentiation and complexity, leading to structures resembling tissues and organs?

   1. Chlamydomonas
   2. Spirogyra
   3. Fucus
   4. Volvox
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   Answer: C. Fucus

   Fucus, a brown alga, displays significant cellular differentiation with specialized structures like holdfasts, stipes, and bladders, mimicking organs found in higher plants. Chlamydomonas is unicellular, Spirogyra is filamentous and coenocytic, and Volvox forms a colonial structure but lacks extensive tissue differentiation.

2. The strobilus, a cone-like structure bearing sporangia, is characteristic of which group of plants, representing a progression towards seed production?

   1. Bryophytes
   2. Pteridophytes (specifically Lycophytes and Sphenophytes)
   3. Algae
   4. Angiosperms
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   Answer: B. Pteridophytes (specifically Lycophytes and Sphenophytes)

   Strobili are reproductive structures found in some pteridophytes like Lycopodium (lycophytes) and Equisetum (sphenophytes). These structures bear sporangia and are considered an important evolutionary step towards the development of cones in gymnosperms and the inflorescences in angiosperms.

3. The vegetative body of most fungi, a network of thread-like hyphae, is called a:

   1. Mycelium
   2. Sporangium
   3. Rhizoid
   4. Thallus
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   Answer: A. Mycelium

   The mycelium is the collective term for the interwoven mass of hyphae that constitutes the vegetative body of a fungus.

4. Which phylum is characterized by a hard exoskeleton made of chitin, jointed appendages, and a segmented body (head, thorax, abdomen)?

   1. Mollusca
   2. Echinodermata
   3. Arthropoda
   4. Chordata
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   Answer: C. Arthropoda

   Arthropods, the largest phylum in the animal kingdom, possess a chitinous exoskeleton, jointed appendages, and a body divided into distinct segments like head, thorax, and abdomen. Examples include insects, spiders, and crustaceans.

5. Which taxonomic rank is positioned between Phylum and Order in the hierarchical classification system?

   1. Family
   2. Class
   3. Genus
   4. Species
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   Answer: B. Class

   The standard Linnaean hierarchy of taxonomic ranks, from broadest to narrowest, is: Kingdom, Phylum, Class, Order, Family, Genus, Species. Therefore, Class falls between Phylum and Order.

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