Instructor: Baraa Sayed Date: December, 2016 Subject: Science Class: G6 Section: Name:

Transcription

1 Instructor: Baraa Sayed Date: December, 2016 Subject: Science Class: G6 Section: Name: Term I Revision worksheet 1- Label the parts of the following tomato flower: Document 1 2- Explain the role of each part briefly. 1

2 3- Document 2 shows two incomplete flowers. Use document 1& 2 and fill in the Venn diagram to compare and contrast the complete flower to that of an incomplete one. Staminate flower Pistillate flower Document 2 Complete flower Incomplete flower Both Title: 2

3 4- Use the document below to answer the questions that follow: a. Use numbers to order the stages of the sexual reproduction in flowering plants. b. Name and explain the stages shown briefly. Stage 1: 3

4 Stage 2: Stage 3: _ Stage 4: _ 5- Check whether the following sentences are true or false then correct the false statements: a- The ovule will grow to form a seed. b- Pollen tube will transport the stamens to the ovary of the pistil. c- Pollination is the union of the male and female gametes to form an ovule. d- Many staminate flowers can give rise to many fruits. 4

5 6- Observe the following document to answer the questions below: a. Label the parts of the flower above. b. Is the above flower complete? Justify your answer. c. How can some insects be helpful to humans? d. Name the stages of the sexual reproduction of a flower that will form a fruit e. Upon planting a seed in the soil certain changes occur. Name and explain this stage briefly. 5

6 7- Complete the following Venn Diagram: Sexual Reproduction Asexual Reproduction Both Title: 8- Circle the answer that best completes each sentence: A- The pistil is made up of the, and the. a. ovary, style, stamens c. pollen sacs, ovary, filaments b. ovary, style, pollen grains d. stigma, style, ovary B- The will unite with the sperm cells to form a. a. zygote, ovule c. anther, zygote b. ovule, zygote d. ovules, zygote C- After the pollen sacs are deposited on the stigma, the a. a fertilized egg will be formed b. the stamens will open to release pollen c. the pollen grains will open a pollen tube in the style d. the male and female gametes will unite to form a zygote D- The is the female reproductive organ of the flower containing the female gametes which are the. a. pistil, ovules c. stamen, ovules b. pistil, ovary d. anther, ovules E- is a group of green leaves containing the. a. Calyx, petals c. Calyx, sepals b. Corolla, petals d. Corolla, sepals 6

7 F- The adjacent diagram shows the stage of. a. fertilization b. germination c. pollination d. fructification G- A is a flower that has the female reproductive organ only. a. staminate flower d. incomplete flower b. pistillate flower e. complete flower c. a and d are true f. b and d are true 9- Stages of the sexual reproduction of flowering plants: a. Why do we use the term sexual in explaining the stages of the reproduction of some plants? Justify your answer. b. Use two incomplete flowers to draw and label the first stage of the sexual reproduction in flowering plants. c- Name the stage that follows the stage you drew in the above document and explain its steps. 7

8 The flowers in document A turned into a new form. d- Identify the stage occurring in document A and explain its steps. : Document A 10- Use the provided documents to answer the questions: A- The peppermint plant uses specific parts to reproduce. a. Name the parts used by this plant to reproduce. b. Describe the process used in document 1. Document 1 B- A potato was planted inside the soil as shown in the following picture: Document 2 a. Draw and label the result of this process in the above box. 8

9 b. What is the type of reproduction used by these two plants? Justify. _ c. Farmers nowadays are thinking of ways that improve the productivity of their crops. What type of reproduction do you advise them to use? Justify. 11- Complete the following Venn diagram to compare and contrast Plant and animal cells: 12- Draw a paramecium cell and label its parts: 9

10 13- Use the following diagram to answer the questions below: a- Label the parts of the paramecium cell: b- Label and explain the stages of the reproduction of paramecium. c- Draw the result of the above division in stage 4. d- Deduce the type of reproduction used by the paramecium to multiply. Justify your answer. 14- Animal & Plant Cell: a. Draw and label an intestinal l cell. b. What is the role of each cell organelle? 10

11 c. What is the role of a neuron? _ d. What are the special features that are found in a muscle cell? _ e. What is the role of each of the three types of blood cells? _ f. How can you differ a bacteria cell from that of a paramecium? Justify your answer? g. A student is observing blood cells under the microscope. How can you help him specify the types of these blood cells? Justify your answer. _ 15- Observe the diagram then answer the question below: a- What is the type of reproduction used by the grasshopper? Justify. 11

12 b- Identify the stages of the life cycle of the grasshopper. c- Is the above animal undergoing metamorphosis? Justify. d- How can you differ between the life cycle of a grasshopper and that of a butterfly? Justify. 16- Complete the Venn diagram to compare and contrast the reproduction of mammals to that of insects. Mammals Insects 12

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