Standard 3

  Ch:18 Timelines   New words   1)                earliest 2)                latest 3)                sequencing 4)                arranging 5)                history 6)                historian 7)                decades 8)                century 9)                approximately 10)            secured 11)            tentative 12)            event 13)            according 14)            chronological 15)            Christian Era 16)            Before Common Era   Answer the following questions.     a. What is a timeline? Ans. Timeline is the method of calculating the years between the two events, where a series of events are written in chronological order.   b. What does CE stand for? Ans - CE stands for Christian Era or Common Era.     c. What does BC stand for? Ans. BC stands for Before Christ or   before the birth of Jesus Christ.   d. Who is a historian? Ans. People who study History or the past are called historia

 

 

 

CH:5 Plant World New words 1.              shrubs 2.              herbs 3.              climbers 4.              root system 5.              shoot system 6.              taproot 7.              fibrous root 8.              food factory 9.              leaf blade 10.         lamina 11.         chlorophyll 12.         photosynthesis 13.         veins 14.         attractive 15.         germination 16.         nutrients 17.         carbon dioxide Word Galaxy 4. Answer the following questions in 3 to 5 sentences. 1. Why do climbers have to take support of a wall or nearby trees or fences? Ans- Climbers are plants with weak stems. They cannot stand straight and need support to grow.   2. How is the stem of herb different from that of a shrub? Ans.- Herbs have tender and flexible stems that grow very close to the ground. Shrubs have hard but thin, woody stems.   3. Name the parts of a plant.   Ans: Root, stem, leaf, flower, fruit. 4. What are the fu