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CBSE Class 11 (Science) The Living World & Biological Classification — practice questions — page 3

Explore 242 free The Living World & Biological Classification questions in CBSE Class 11 (Science) Biology. Open each question or exercise to read its content, reference answers and available explanation.

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The Living World & Biological Classification questions and exercises with answers

Showing questions 61–90 of 242.

Bacteria reproduce mainly by:Read the answer and worked solution →Which organisms completely lack a cell wall?Read the answer and worked solution →Kingdom Protista holds all eukaryotes that are:Read the answer and worked solution →The cell wall of a diatom is embedded with:Read the answer and worked solution →The heaped up cell walls of dead diatoms make up:Read the answer and worked solution →The chief producers in the oceans are the:Read the answer and worked solution →Red tides in the sea are caused by rapid growth of:Read the answer and worked solution →Instead of a cell wall a euglenoid has a protein rich:Read the answer and worked solution →Deprived of sunlight euglenoids behave like:Read the answer and worked solution →Slime moulds obtain food in which way?Read the answer and worked solution →The aggregation formed by a slime mould is called a:Read the answer and worked solution →Amoeboid protozoans capture their prey using:Read the answer and worked solution →Sleeping sickness is caused by which flagellated protozoan?Read the answer and worked solution →The cavity through which Paramoecium takes in food is the:Read the answer and worked solution →Malaria is caused by which sporozoan?Read the answer and worked solution →Which fungus is unicellular?Read the answer and worked solution →The network of thread like filaments in a fungus is the:Read the answer and worked solution →Hyphae that are continuous tubes with many nuclei are called:Read the answer and worked solution →The cell wall of a fungus is built mainly of:Read the answer and worked solution →Fungi living in association with algae form:Read the answer and worked solution →Fusion of protoplasms of two gametes in a fungus is:Read the answer and worked solution →Fusion of two nuclei in the fungal sexual cycle is:Read the answer and worked solution →The stage with two nuclei in one cell is called a:Read the answer and worked solution →Which class of fungi has an aseptate coenocytic mycelium?Read the answer and worked solution →Ascomycetes are commonly known as:Read the answer and worked solution →Which fungus is used widely in biochemical and genetic work?Read the answer and worked solution →Mushrooms, bracket fungi and puffballs belong to:Read the answer and worked solution →How many basidiospores form on a single basidium?Read the answer and worked solution →Deuteromycetes are called imperfect fungi because they lack a known:Read the answer and worked solution →Insectivorous plants such as the Venus fly trap are:Read the answer and worked solution →

Worked practice questions

Bacteria reproduce mainly by:

  1. Grafting
  2. Fission
  3. Fusion
  4. Budding
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Correct answer: B. Fission

1. A bacterium simply divides into two. 2. Spores appear only in bad conditions. 3. The main route is fission. _Source: syllabus Biology, Ch 2 'Biological Classification'_

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Which organisms completely lack a cell wall?

  1. Myxomycetes
  2. Mycobacteria
  3. Mycoplasma
  4. Mycorrhiza
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Correct answer: C. Mycoplasma

1. Most bacteria have a rigid wall. 2. One group has none at all. 3. The Mycoplasma are the smallest living cells known. _Source: syllabus Biology, Ch 2 'Biological Classification'_

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Kingdom Protista holds all eukaryotes that are:

  1. Simple walled
  2. Spore bearing
  3. Sexually formed
  4. Single celled
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Correct answer: D. Single celled

1. Its members have a true nucleus. 2. They are made of just one cell. 3. All single celled eukaryotes go here. _Source: syllabus Biology, Ch 2 'Biological Classification'_

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