NCERT Exemplar solutions for Biology [English] Class 11 chapter 1 - The Living World [Latest edition]

As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics ______.

Which of the following ‘suffixes’ used for units of classification in plants indicates a taxonomic category of ‘family’?

The term ‘systematics’ refers to ______.

Genus represents ______.

The taxonomic unit ‘Phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants.

Botanical gardens and zoological parks have ______.

Taxonomic key is one of the taxonomic tools in the identification and classification of plants and animals. It is used in the preparation of ______.

All living organisms are linked to one another because ______.

Which of the following is a defining characteristic of living organisms?

Match the following and choose the correct option:

Linnaeus is considered as Father of Taxonomy. Name two other botanists known for their contribution to the field of plant taxonomy?

What does ICZN stand for?

Couplet in taxonomic key means.

What is a Monograph?

Amoeba multiplies by mitotic cell division. Is this phenomena growth or reproduction? Explain.

Define metabolism.

Which is the largest botanical garden in the world? Name a few well known botanical gardens in India.

A ball of snow when rolled over snow increases in mass, volume and size. Is this comparable to growth as seen in living organisms? Why?

In a given habitat we have 20 plant species and 20 animal species. Should we call this as ‘diversity’ or ‘biodiversity’? Justify your answer.

International Code of Botanical Nomenclature (ICBN) has provided a code for classification of plants. Give hierarchy of units of classification botanists follow while classifying plants and mention different ‘Suffixes’ used for the units.

A plant species shows several morphological variations in response to altitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear and all the variants have common morphology. What are these variants called?

How do you prepare your own herbarium sheets? What are the different tools you carry with you while collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomical studies?

What is the difference between flora, fauna and vegetation? Eichhornia crassipes is called as an exotic species while Rauwolfia serpentina is an endemic species in India. What do these terms exotic and endemic refer to?

A plant may have different names in different regions of the country or world. How do botanists solve this problem?

Brinjal and potato belong to the same genus Solanum, but to two different species. What defines them as seperate species?

Properties of cell organelles are not always found in the molecular constituents of cell organelles. Justify.

The number and kinds of organism is not constant. How do you explain this statement?

What is meant by living? Give any four defining features of life forms.

A scientist has come across a plant which he feels is a new species. How will he go about its identification, classification and nomenclature?

Brassica campestris Linn

1. Give the common name of the plant.
2. What do the first two parts of the name denote?
3. Why are they written in italics?
4. What is the meaning of Linn written at the end of the name?

What are taxonomical aids? Give the importance of herbaria and museums. How are Botanical gardens and Zoological parks useful in conserving biodiversity?

Define a taxon. What is meant by taxonomic hierarchy. Give a flow diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and number of shared characters as we go up the taxonomical hierarchy?

A student of taxonomy was puzzled when told by his professor to look for a key to identify a plant. He went to his friend to clarify what ‘Key’ the professor was refering to? What would the friend explain to him?

Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.

Do you consider a person in coma-living or dead?

What is the similarity and dissimilarity between “whole moong daal” and “broken moong daal” in terms of respiration and growth? Based on these parameters classify them into living or nonliving?

Some of the properties of tissues are not the constituents of its cells. Give three examples to support the statement.