Basis of Classification

Samacheer Book Back Questions And Answers For Science Standard 7 Term 2 “Basis of Classification“

I. Choose the correct answer:
1. The following characteristics are essential for classification.
(a) Similarities
(b) Differences
(c) Both of them
(d) None of them

2. Approximately species of living organisms found in the earth.
(a) 8.7 million
(b) 8.6 million
(c) 8.5 million
(d) 8.8 million

3. The largest division of the living world is
(a) Order
(b) Kingdom
(c) Phylum
(d) Family

4. Who proposed the five kingdoms of classification?
(a) Aristotle
(b) Linnaeus
(c) Whitakar
(d) Plato

5. The binomial name of pigeon is
(a) Homo sapiens
(b) Rattus rattus
(c) Mangifera indica
(d) Columbo livia

II. Fill in the blanks:
1. _____ in 1623, introduced the binomial nomenclature.
2. Species is the _____ unit of classification.
3. _____ are non- green and non-photosynthetic in nature.
4. The binomial name of onion is _____
5. Carolus Linnaeus is known as the Father of _____.

Answers:
1. Gaspard Bauhin
2. Basic
3. Fungi
4. Allium sativum
5. Modern Taxonomy

IV. Match the following:
1. Monera            A. Moulds
2. Protista            B. Bacteria
3. Fungi               C. Neem
4. Plantae            D. Butterfly
5. Animalia          E. Euglena

Answers:
1. B
2. E
3. A
4. C
5. D

V. Assertion and Reason Questions:
1. Assertion (A): Binomial name is the universal name and contains two names.
Reason (R): It was first introduced by Carolus Linnaeus.
(a) Assertion is correct, Reasoning is correct
(b) Assertion is correct, Reasoning is incorrect
(c) Assertion is incorrect, Reasoning is correct
(d) Assertion and Reasoning are incorrect

2. Assertion (A): Identification, assortment and grouping are essential for classification.
Reason (R): These are basic steps of taxonomy.
(a) Assertion is correct, Reasoning is correct
(b) Assertion is correct, Reasoning is incorrect
(c) Assertion is incorrect, Reasoning is correct
(d) Assertion & Reasoning is incorrect.

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