Samacheer Kalvi 6th Science Term 3 Unit 5 Book Back Questions and Answers:
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Samacheer Kalvi 6th Science Book Back Chapter 5 Term 3 Solution Guide PDF:
TN State Board Class 6th Science Subject Term 3 Unit 5 one mark and two mark solutions guide PDF available below.
6th Science – Term 1
Unit 5 – Plants in Daily Life
I. Choose the correct answer :
1. One of the following birds is an example of plant-pollinator
2. Natural Mosquito repellant is
3. Which of the following is not a root?
4. Which of the following medicinal plants has anti-cancer properties?
5. Which is the national tree of India?
(a) Neem tree
(b) Jack tree
(c) Banyan tree
(d) Mango tree
(c) Banyan tree
II. Fill in the blanks :
- In every year October _______ is celebrated as world food day.
- _______ is an example of textile fibre.
- I am the state tree of Tamilnadu. Who am I _______ ?
- The juice of the leaves of _______ plant relieves cough and bronchitis.
- The edible seeds of leguminous plants are called _______
- Palm tree
III. True or False – If False, give the correct answer :
1. Plants grown for decorative purposes are called as softwood.
False. Plants grown for decorative purposes are called Ornamental plants.
2. Silkworm eats mulberry leaves.
3. Cauliflower is used for ornamental purpose.
False. Jasmine is used for ornamental purpose.
4. Cotton cloth is not suitable for summer season.
False. Cotton cloth is suitable for summer season.
5. Sugarcane is used as bio fuel.
IV. Match the following :
- Fibre yielding plant – Chloramine
- Hardwood – Spice
- Neem – Hemp
- Clove – Cereals
- Millet – Teakwood
1 – iii; 2 – v; 3 – i; 4 – ii; 5 – iv
V. Analogy :
1. mango : fruit:: maize : _______
2. coconut: fibre :: rose : _______
3. Bees: Polinate insect:: earthworms : _______
VI. Give a Very Short Answer:
1. What is food?
Any nutritious substance that people or animals eat or drink or that plants absorb in order to maintain life and growth is called Food.
2. What are medicinal plants?
Plants that have ingredients that can be used in drug preparation are known as medicinal plants. (Eg.) Tulsi, Neem etc.
3. How hardwoods differ from softwoods?
- Present in angiosperms (flowering plants)
- It is used to prepare furniture, decks, flooring and wooden construction.
- Example: Teak, Jackfruit.
- Present in gymnosperm (non-flowering plants)
- It is used to produce plywood, wooden boxes, medium-density fibreboard (MDF) and paper making.
- Example: Katampu, Pine
4. What is spice?
Spices are the aromatic parts of tropical plant traditionally used to flavour food. Bark, roots, leaves, flowers or stems of certain plants primarily used for flavouring colouring or preserving food.
(Eg.) roots – vetiver,
leaves – curry leaves
seeds – fenugreek
flower bud – clove
5. Name any three medicinal plants, which are available in your area?
Neem tree, Tulsi tree, Amla tree are the medicinal plants.
6. What are the uses of timber?
- A timer is used in the construction of buildings, making of furniture
- It is used in making fibreboard, paper making.
VII. Give a Short Answer:
1. What is a symbiotic relationship?
- The relationship between animals and plants, benefiting both of them is known as a symbiotic relationship.
- (Eg.) Silkworms – feeding on Mulberry leaves – produce silk fibres.
- Honey bee – feed on pollen and honey of plants – Agents of cross-pollination and form vegetables and fruits along with honey.
2. Write the uses of neem?
- Neem leaf is used for leprosy, eye disorders, intestinal worms, stomach upset, skin ulcer, diseases of heart and blood vessels, fever, diabetes and liver problem.
- Neem flowers can be used to treat intestinal worm.
- Neem oil is rich in vitamin E and fatty acid. It helps to improve skin elasticity.
3. Name any five plants and their parts that we eat.
- Carrot, Beetroot and radish – Taproots
- Potato, Ginger, Turmeric – Underground stem
- Curry leaves, Coriander leaves – Leaves
- Drum stick – Leaves, Unripe fruit and bark.
- Paddy, Wheat, Maize and Ragi – Seeds
Other Important links for Class 6th Book Back Answers:
Tamil Nadu Class 6th Standard Book Back Guide PDF, Click the link – 6th Book Back Questions & Answers PDF
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