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Draw a plant cell and label the parts wh...

Draw a plant cell and label the parts which
(a) determines the function and development of the cell. (b) packages materials coming from the endoplasmic reticulum.
(c) provides resistance to microbes to withstand hypotonic external media without bursting.
(d) is site for any biochemical reaction necessary to sustain life.
(e) is a fluid contained inside the nucleus.

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A plant cell and its parts is as below
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Water and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting tissue B. The C helps the water and dissolved minerals to move up through the tissue B in roots and stem, and reach the leaves of a plant. In the leaves food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plant is called F. (a) What are (i) A (ii) B (iii) C (iv) E, and (iv) F ? (b) Which tissue is made up of living cells : B or E ? (c) Name one substance (other than oxygen) which is transported by tissue A in the human body. (d) Which two components of tissue A are the cells without nucleus ? (e) Name any two organisms (animals) which do not have liquid like A in their body.

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The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body. (a) What is (i) tissue A (ii) pigment B, and (iii) colour C ? (b) Name (i) D (ii) E (iii) F, and (iv) G. (c) Name one substance (other than oxygen) which is transported by tissue A in the human body (d) Which two components of tissue A are the cell without nucleus ? (e) Name any two organism (animals) which do not have liquid like A in their body.

Read the following statements and find out the incorrect statements. a. Ultimately all the food that is respired for life processes comes from photosynthesis. b. The energy released by oxidation in respiration is directly used for the life processes. c. The carbon skeleton produced during respiration is used as precursors for biosynthesis of other molecules in cell. d. Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose. e. During oxidation within a cell, all the energy contained in respiratory substrates is released free into the cell in a single step, which is trapped as chemical energy in the form of ATP.

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NCERT EXEMPLAR-THE FUNDAMENTAL UNIT OF LIFE -The Fundamental Unit Of Life
  1. Match the following columns {:(Column I,Column II),(A."Smooth endopl...

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  2. Write the name of different plants parts in which chromoplast, chlorop...

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  3. Name the organelles which show the analogy written as under (i) Tra...

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  4. How is bacterial cell different from onion peel?

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  5. How do substances like carbon dioxide (CO(2)) and water (H(2)O) move i...

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  6. How does an Amoeba obtain its food?

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  7. Name the two organelles in a plant cell that contain their own genetic...

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  8. Why are lysosomes also known as scavengers of the cells?

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  9. Which cell organelle controls most of the activities of the cell?

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  10. Which kind of plastid is more common in (a) roots of the plant (b) l...

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  11. Why do plant cells posses large sized vacuole?

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  12. How are chromatin, chromatid and chromosomes related to each other?

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  13. What are the consequences of the following conditions? (a) A cell co...

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  14. Draw a plant cell and label the parts which (a) determines the funct...

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  15. Illustrate only a plant cell as seen under electron microscope. How it...

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  16. Draw a neat labelled diagram of an animal cell.

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  17. Draw a well labelled diagram of an eukaryotic nucleus. How is it diffe...

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  18. Differentiate between rough and smooth endoplasmic reticulum. How is e...

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  19. In brief state what happens when (a) Dry apricots are left for somet...

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  20. Draw a neat diagram of plant cell and label any three parts which diff...

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