Diversity in Living Things and their Classification - Standard 6 - General Science - Balbharati
Q. 1 Match the pairs.
| A Group | Answers |
|---|---|
| Amphibian | A Frog |
| Vertebrate | A Monkey |
| With scales | A Snake |
Q. 2 Who is the odd one out ?
(a) Fungus, mushroom, chrysanthemum, spirogyra
(b) Mango, banyan, palm, chick pea
(c) Grape, orange, lemon, hibiscus
(d) Sunflower, banyan, jowar, bajra
(e) Guava, radish, carrot, beetroot
(f) Deer, fish, man, worms
Q. 3 What is the difference ?
(a) Flowering plants – non-flowering plants
| Flowering plants | Non-flowering plants |
|---|---|
| 1. Flowering plants have flowers. | 1. Non-flowering plants do not have flowers. |
| 2. Flowering plants have parts like roots, stem, leaves, etc. | 2. Non-flowering plants may not have parts like roots, stem, leaves, etc. |
| 3. Flowering plants have fruits with seeds. | 3. Non-flowering plants do not have fruits with seeds. |
(b) A tree – a shrub
| A tree | A shrub |
|---|---|
| 1. A tree grows tall. | 1. A shrub does not grow tall. |
| 2. A tree is large in size. | 2. A shrub is small in size. |
| 3. Trees have branches at some height above the ground. | 3. Shrubs have branches very close to the ground. |
| 4. Trees are perennial. | 4. Shrubs are annual or biennial. |
(c) Vertebrates – invertebrates
| Vertebrates | Invertebrates |
|---|---|
| 1. Vertebrates have a vertebral column. | 1. Invertebrates do not have a vertebral column. |
| 2. Vertebrates have well-developed organs. | 2. Invertebrates do not have well-developed organs. |
| 3. Vertebrates are highly evolved animals. e.g. Man, Elephant, Fish, Snake. | 3. Invertebrates are primitive animals. e.g. Earthworm, Amoeba, Spider, Snail. |
Q. 4 True or false?
(a) The snail is an aquatic animal.
Ans. False.
(b) Amphibians can live in air and in water.
Ans. False.
(c) The function of the brain is well developed in vertebrate animals.
Ans. True.
(s) The amoeba is a multicellular animal.
Ans. False.
Q. 5 Write two names of each.
(a) A flowering plant
Ans. 1. Rose 2. Sunflower
(b) A non-flowering plant
Ans. 1. Ferns 2. Mosses
(c) A tree
Ans. 1. Mango 2. Banyan
(d) A shrub
Ans. 1. Hibiscus 2. Oleander
(e) A creeper
Ans. 1. Pumpkin 2. Cucumber
(f) An annual plant
Ans. 1. Corn 2. Watermelon
(g) A biennial plant
Ans. 1. Carrot 2. Radish
(h) A perennial plant
Ans. 1. Mango 2. Banyan
Q. 6 Write answers to the following.
(a) What are the parts of a plant?
Ans. Roots, stem, leaves, flowers and fruits are the parts of a plant.
(b) What are the functions of the root?
Ans. 1. Roots hold the soil firmly and anchor the plant.
2. Roots absorb and transport water and nutrients from the soil.
3. The roots of some plants like the carrot and radish also store food.
(c) Why is it necessary to classify living things?
Ans. There are so many living things present on the earth. They have some similarities and some differences among them. e.g. where they live, what they eat, and more. Classification helps us study and understand this huge diversity.
(d) What are the criteria used to classify living things?
Ans. Criteria used to classify the living things are:
1. Structure of living things.
2 . Different organs present.
3. Their habitat
4. Similarities and difference among them.
(e) Tell some characteristics of creepers.
Ans. 1. Creepers have very fragile stems that can not stand erect and they can not support all of their weight.
2. They grow close to the ground and spread out horizontally.
3. They have long, flexible stems that crawl along the soil or other surfaces.
(f) Explain the characteristics of herbs with two examples.
Ans. 1. Herbs are small plants with soft stems, not woody like trees or shrubs.
2. They are usually short and grow close to the ground.
3. Herbs often have aromatic leaves and are used for flavoring food and making medicines.
4. Examples are mint, which is used for chutneys and tea, and coriander, a common spice in Indian cooking.
(g) On the basis of which criteria will you classify plants and animals?
Ans. Criteria for plants:
1) Height 2) Shape of stems 3) Period of lifecycle. 4) Whether they produce flowers or they are non-flowering 5) Habitat
Criteria for animals:
1) Cell structure 2) Vertebral column 3) Method of reproduction 4) Habitat.
(h) What protects the bodies of animals?
Ans. Animals have skin to cover and protect their bodies. Some, like snakes, have tough scales. Birds have feathers that help them fly and keep warm. Animals like bears have fur to stay warm. Tortoises have hard shells for protection. Some animals have horns, nails, or sharp teeth for protection.
Q. 7 Draw figures.
Draw the figure of a plant to show the parts, namely, the root, stem and leaves in it.
Ans. (Note: Flower and fruit are also shown in the following diagram. Students can skip it.)
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