The World of Plants Book Back Questions 6th Science Lesson 4
6th Science Lesson 4
4] The World of Plants
Book Back Questions with Answer and Do You Know Box Content
Do you know?
The leaves of Victoria amazonica plant grows upto 3 metres across. A mature Victoria leaf can support an evenly distributed load of 45 Kilograms or apparently young person
Nile is the longest river in the world. It is 6650 km long. The longest river in India is Ganges. It is 2525 km long.
Air spaces in stems and petioles of lotus are useful for floating in water.
The first land plant appeared around 470 million years ago. They were mosses and liverworts. The Amazon Rain Forest in South America produces half of the world’s oxygen supply.
Thar Desert, also called Great Indian Desert, is an arid region of rolling sand hills on the Indian subcontinent. It is located partly in Rajasthan state, north-western India, and partly in Punjab and Sindh (Sind) Provinces, Eastern Pakistan.
World habitat day is observed on 1st Monday of October every year.
Bamboo is one of the fast growing plants, during active growth phase.
Choose the correct answer:
1. Pond is an example of __________ ecosystem.
(a) Marine
(b) freshwater
(c) deserts
(d) mountain
2. The important function of stomata is __________
(a) Conduction
(b) transpiration
(c) photosynthesis
(d) absorption
3. Organ of absorption is ____________
(a) Root
(b) stem
(c) leaf
(d) flower
4. The habitat of water hyacinth is
(a) Aquatic
(b) terrestrial
(c) desert
(d) mountain
Fill in the blanks:
1. Earth’s surface is covered by _____________ % of water
2. The driest places on the Earth are __________
3. Fixation and absorption are the main functions of ____________
4. Primary organs of photosynthesis are _____________
5. Taproot system is present in ______________ plants.
State True or False. If false, correct the statement.
1. Plants can live without water.
2. All plants have chlorophyll.
3. Plants have three parts: the root, the stem and leaves.
4. Mountain is an example for freshwater habitat.
5. Root is modified into spines.
6. Green plants need sunlight.
Match the following:
1. Mountain a. Monocot
2. Desert b. Branches
3. Stem c. Dry place
4. Photosynthesis d. Himalayas
5. Fibrous root e. leaves
Arrange the following in correct sequence.
1. Leaf – Stem – Root – Flower
2. Transpiration – Conduction – Absorption – Fixation
Answers:
Choose the correct answer:
1. Freshwater 2. Transpiration 3. Root 4. Aquatic
Fill in the blanks:
1. More than 70% 2. Deserts 3. Root 4. Leaves 5. Dicotyledonous
Say True or False:
1. False
Correct Statement: Plants cannot live without water.
2. True
3. False
Correct Statement: Plant have several parts such as the root, stem, leaves, flowers, fruits and seeds.
4. False
Correct Statement: Rivers, Ponds, lakes and pools are the example for freshwater habitat. Mountains are example for the Terrestrial habitat.
5. False
Correct Statement: Leaves are modified into spines.
6. True
Match the following:
1. Himalayas 2. Dry place 3. Branches 4. Leaves 5. Monocot
Arrange the following in correct sequence.
1. Root- Stem- Leaf- Flower
2. Fixation- Absorption- Conduction- Transpiration