CBSE Class 11 Science Biology · Ch 1: The Living World

Topics in this test

Difficulty: 3 easy · 9 medium · 18 hard

Sample questions with answers

The first 5 questions of this free test.

1. Q1. A student observes that a crystal becomes bigger and a mountain of sand grows in size. Based on the chapter, why is this growth NOT considered a characteristic of living growth?

   • A. It is a defining property shared equally by living and non-living things
   • B. It occurs by an increase in the number of cells from inside the object
   • C. It is accompanied by reproduction and metabolism
   • D. It occurs only by accumulation of material on the outer surface (extrinsic), not by increase in cells from inside
   Solution

   Living organisms grow from inside by increase in cell number and mass (intrinsic), whereas non-living objects increase in size only by addition of material on their outer surface.

2. Q2. As we move from the category 'species' towards 'kingdom' in the taxonomic hierarchy, which of the following is correct regarding the organisms grouped and their shared characters?

   • A. Both the number of organisms and common characters decrease
   • B. Number of organisms increases and the number of common characters decreases
   • C. Number of organisms decreases and the number of common characters increases
   • D. Both the number of organisms and common characters increase
   Solution

   Higher categories contain more organisms but, being more general, the number of common characteristics shared among them decreases.

3. Q3. Which one of the following is the odd one out with respect to the others, based on the type of taxonomic aid it represents?

   • A. Herbarium
   • B. Botanical garden
   • C. Museum
   • D. Taxonomic key
   Solution

   Herbarium, botanical garden and museum are store-houses of actual (collected or living) specimens, whereas a taxonomic key is a written analytical aid based on contrasting characters.

4. Q4. Isolated metabolic reactions carried out in a test tube outside a living body are:

   • A. Neither living nor non-living, though they are surely living reactions
   • B. Non-living, because metabolism never occurs outside a cell
   • C. Fully living, because metabolism is going on
   • D. Living, because they show growth and reproduction
   Solution

   Metabolism is a defining feature of life, but isolated reactions in a test tube are neither living nor non-living — they are living reactions performed in a cell-free (non-living) system.

5. Q5. Consider the following statements about the rules of binomial nomenclature: (i) Scientific names are generally in Latin and written in italics. (ii) The first word (genus) begins with a capital letter and the specific epithet begins with a small letter. (iii) When handwritten, the genus and species names are underlined together with a single continuous line. Which statements are correct?

   • A. (i) and (ii)
   • B. (ii) and (iii)
   • C. (i) and (iii)
   • D. (i), (ii) and (iii)
   Solution

   When handwritten, the genus and the species names must be underlined separately, so statement (iii) is wrong while (i) and (ii) are correct.

Frequently asked questions

More tests in the CBSE Class 11 Science Test Series 2027 — Chapter-wise + Full Tests

• Chemistry · Ch 1: Some Basic Concepts of ChemistryFree
• CBSE Class 11 Science Test Series 2027 — Chapter-wise + Full Tests — Full Test
• CBSE Class 11 Science Test Series 2027 — Chapter-wise + Full Tests — Full Test 2

See the full CBSE Class 11 Science Test Series 2027 — Chapter-wise + Full Tests → · CBSE Class 11 Science: pattern, notification & syllabus →