Basis Of Classification Book Back Questions 7th Science Lesson 12
7th Science Lesson 12
12] Basis Of Classification
Book Back Questions with Answer and Do You Know Box Content
Do You Know?
Aristotle was a Greek philosopher and thinker who lived about 2400 years ago. Aristotle came up with the following grouping system that was used for almost 2000 years after his death! He classified all organisms into either animals or plants. Then the classified into those ‘with blood’ and those ‘without blood’. Then the animals are classified into three groups based on their method of movement: walker, flyers or swimmers.
Scientific Names of Some Organisms:
| S.No | Common Name | Scientific Name |
| 1 | Human being | Homo sapiens |
| 2 | Onion | Allium sativum |
| 3 | Rat | Rattus rattus |
| 4 | Pigeon | Columba livia |
| 5 | Tamarind | Tamirindus indica |
| 6 | Lime | Citrus aurantifolia |
| 7 | Neem tree | Azardirachta indica |
| 8 | Frog | Rana hexadactyla |
| 9 | Coconut | Cocos nucifera |
| 10 | Paddy | Oryza sativa |
| 11 | Fish | Catla catla |
| 12 | Orange | Citrus sinensis |
| 13 | Ginger | Zingiber officinale |
| 14 | Papaya | Carica papaya |
| 15 | Date | Phoenix dactylifera |
Choose the best answers:
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 kingdom of classification?
(a) Aristotle
(b) Linnaeus
(c) Whittaker
(d) Plato
5. The binomial name of pigeon is _______________
(a) Homo sapiens
(b) Rattus rattus
(c) Mangifera indica
(d) Columbo livia
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 _______________
State true or false. If false, correct the statement:
1. Classification helps to know the origin and evolution of an organism.
2. Fishes are aquatic vertebrates.
3. In the year 1979, five kingdom classifications were proposed.
4. True nucleus is seen in prokaryotic cell.
5. Animal cells have cell wall.
Match the following:
1. Monera – Moulds
2. Protista – Bacteria
3. Fungi – Neem
4. Plantae – Butterfly
5. Animalia – Euglena
Consider the statements given below and choose the correct option:
1. Assertion: Binomial name is the universal name and contains two names.
Reason: 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: Identification, assortment and grouping are essential for classification.
Reason: 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 and Reasoning are incorrect
Answers:
Choose the best answers:
1. Similarities and Differences 2. 8.7 million 3. Kingdom 4. Whittaker 5. Columbo livia
Fill in the blanks:
1. Gaspard Bauhin 2. Basic 3. Fungi 4. Allium Sativum 5. Modern Taxonomy
Say True or False:
1. True
2. True
3. False
Correct Statement: In the year 1969, five kingdom classifications were proposed.
4. False
Correct Statement: True cells are seen in eukaryotic cell.
5. False
Correct Statement: Plant cells have cell wall.
Match the following:
1. Bacteria 2. Euglena 3. Moulds 4. Neem 5. Butterfly
Consider the statements given below and choose the correct option:
- Assertion is correct, Reasoning is incorrect
- Assertion is correct, Reasoning is correct