# Samacheer Kalvi 7th Science Term 2 Unit 5 Solutions

## Samacheer Kalvi 7th Science Term 2 Unit 5 Book Back Question and Answers/Solutions:

Samacheer Kalvi Class 7th Std Science Book Back 1 Mark and 2 Mark Question & Answers PDF uploaded and available below. Class 7th Standard New Syllabus 2022 to 2023 Book Back Question & Answer solutions available for both English and Tamil Medium. Class 7 New Science Book Term 2 Unit 5 – Basis of Classification Answers/Solutions Guide are provided on this page. 7th Std Science Book is of 1st Term consists of 7 units, 2nd and 3rd Term consists of 6 units. All Units/Chapters of Term 1st, 2nd, 3rd Science Book Back One, and Two Mark Solutions are given below.

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### Samacheer Kalvi 7th Science Book Back Chapter 5 Term 2 Answers/Solutions Guide PDF:

7th Science Subject 1 Mark and 2 Mark Solutions Guide PDF available below. Click the Download option to download the book back 1 Mark & 2 Mark questions and answers. Take the printout and use it for exam purposes.

### Basis of Classification

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) 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 ________

1. Gaspard Bauhin
2. Basic
3. Fungi
4. Hum sativum
5. Modern Taxonomy

### IV. Match the following:

Question 1.

1. Monera – Moulds
2. Protista – Bacteria
3. Fungi – Neem
4. Plantae – Butterfly
5. Animalia – Euglena

1. Monera – Bacteria
2. Protista – Euglena
3. Fungi – Moulds
4. Plantae – Neem
5. Animalia – Butterfly

### 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
Answer: (b) Assertion is correct, Reasoning is 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.
Answer: (a) Assertion is correct, Reasoning is correct

### VI. Give very short answer:

1. What is classification?
The method of arranging the organisms into groups is called classification

2. List out the five kingdoms classification.

1. Monera
2. Protista
3. Fungi
4. Plantae
5. Animalia

3. Define – dichotomous key.
It is a tool used to classify organisms based on their similarities and differences.

4. Write two examples of Monera.
Bacteria and Blue green algae.

5. What is binomial nomenclature?
Binomial nomenclature is an universal system of naming organisms. As per this system, each organism has two names – the first is the Genus name and the second is the Species name.

6. Write the binomial name of
(a) Human being
Binomial name
(a) Human being – Homo sapiens

7. Write two features of protista.

1. It includes unicellular and few simple multicellular eukaryotes.
2. It includes plant like protists (Algae) and animal like protists (protozoans)

### VII. Give short Answer :

1. Write the levels of classification.
There are seven main categories of hierarchies namely, Kingdom, Phylum, Class, Order, Family, Genus and Species- Species is the basic unit of classification

2. Differentiate plantae and animalia
Kingdom plantae

1. They are multicellular eukaryotes that can photosynthesize.
2. The cells have cell wall.
3. The cells can perform specialised functions like photosynthesis.
4. Eg. Ferns, cone bearing plants and flowering plants

Kingdom Animalia

1. They are multicellular, eukaryotic and heterotrophic animals.
2. The cells lack cell wall.
3. They cannot photosynthesize but animals move from place to place unlike plants.
4. Eg. Invertebrates and Vertebrates

3. Write any two merits of Five Kingdom classification.