Biology · Class 11 Science
Ch 1Living World — Class 11 Biology, concept-first.
Planet Earth is made up of two kinds of components: abiotic (non-living, e.g. rocks, water, air) and biotic (living organisms). At first glance it seems obvious which is which — yet the boundary is not always so simple. A crystal can "grow," a sand dune can pile up into a mound, and a machine can respond to a signal.
Key concepts
Hover a concept to preview it and jump to its most relevant Q&A.
Characteristics Of Living Organisms
The defining features shared by all living things, including growth, reproduction, metabolism, cellular organisation, consciousness, and the ability to sense and respond to the environment.
Most relevant Q&A
In previous exams
How often this chapter’s concepts have been examined — real appearance data, never estimated.
Chapter contents
The NCERT structure, section by section. Open a section to see its questions, then read the concept-first solution.
Basic Principles of Life
Planet Earth is made up of two kinds of components: abiotic (non-living, e.g. rocks, water, air) and biotic (living organisms).
Herbarium
A herbarium (plural: herbaria) is a dried plant specimen that has been pressed, chemically treated to prevent decay/pest damage, and then mounted on a standard-size sheet so that it can be preserved a…
Botanical Gardens
A botanical garden is a place where living plants of many different varieties, collected from different parts of the world, are grown together in a scientific and systematic way, in their natural livi…
Museum
A museum, in the biological sense used here, is a repository where collections of preserved plant and animal specimens are kept for study and display.
Zoological Parks
A zoological park, commonly known simply as a "zoo," is a place of considerable interest to the general public, where wild animals are kept in captivity.
Biodiversity Parks
A biodiversity park is different in character from a botanical garden or a zoo. Rather than being a curated collection of individually labelled plants or caged animals, it is an ecological assemblage…
Key
A key is a taxonomical aid used to classify plants and animals — essentially a structured tool that lets someone work through a series of choices to arrive at the correct identification of an unknown…
+−Exercise12 questions
- Q1Which is not a property of living being? (a) Metabolism (b) Decay (c) Growth (d) ReproductionFree
- Q2A particular plant is strictly a seasonal plant. Which one of the following is best suited if it is to be studied in the laboratory? (a) Her…Free
- Q3A group of students found two cockroaches in the classroom. They had a debate whether they are alive or dead. Which life property will help…Free
- Q4Distinguish between botanical gardens, zoological park and biodiversity park with reference to their characteristicsPreview
- Q5Jijamata Udyan, the famous zoo in Mumbai has acclimatised the humbolt penguins. Why should penguins be acclimatised when kept at a place awa…Preview
- Q6Riya found peculiar plant on her visit to Himachal Pradesh. What are the ways she can show it to her biology teacher and get information abo…Preview
- Q7At Andaman, authorities do not allow tourists to collect shells from beaches. Why it must be so?Preview
- Q8Why do we have green house in botanical gardens?Preview
- Q9What do you understand from terms like in situ and ex situ conservation?Preview
- Q10Write short notes on: Role of the human beings in biodiversity conservation.Preview
- Q11Write short notes on: Importance of botanical garden.Preview
- Q12How can you, as an individual, prevent the loss of Biodiversity?Preview