CLASS 10D SCIENCE

                                                    LIFE PROCESSES- NUTRITION Instructions: Complete your assignment in your respective biology notebook.                      Pose your doubts in comment box. Q1. If the salivary amylase is lacking in the saliva, which event will be missed in the process of digestion? Q2. What is the function of mucous lining present in the stomach? Q3. What is the sequence of the digestive parts of human alimentary canal? Q4. Name the enzymes present in pancreatic juice. Also write the function for the same. Q5. In which part of alimentary canal complete digestion take place. Explain. Q6. Explain the process of nutrition in Amoeba with help of diagram.    Q7. How do the guard cells regulate opening and closing of stomatal pores? Q8. Name the following  (a) The process in plants that links light energy with chemical energy.  (b) Organism that can prepare their own food. (c) The cell organelle where photosynthe

Lesson 5 Welcome back students! Let us check our answers of yesterday’s assignment. Q1) Explain the process of digestion in amoeba (must write in points)and draw figure 6.5   page 98.       (for answer please check page 98, 6.2.3) Q2) Explain how Paramecium obtains it’s food? (for answer please check page 98, 6.2.3) Q3) Give one example each of plant parasite, animal parasite, ecto parasite and an endo parasite. A3) plant parasite- Cuscuta                             animal parasite - ticks, lice   ecto parasite- lice ( lives outside the host body) and      an endo parasite – tapeworm(lives inside the host body) GREAT! WE NOW BEGIN WITH TODAY’S LESSON. By the end of today’s class you will be able to      1)       L ist various parts of human alimentary canal      2)       Draw a neat labeled diagram of it      3)       Study the process of digestion in every part of human alimentary canal. PLEASE COPY EVERYTHING IN YOUR BIOLOGY NOTEBOOK EXCE

LIFE PROCESSES    (CLASS 10) Lesson 4 Welcome back students! Let us check our answers of yesterday’s assignment. Q1) List the nutrients required by a plant for photosynthesis other than carbon, hydrogen and oxygen and how do plants get them? A1) Plants require nutrients such as nitrogen, magnesium, phosphorus and iron other than carbon, hydrogen and oxygen. Plants take these nutrients from soil by roots. Nitrogen is taken up in the form of nitrites and nitrates. Q2) Why is nitrogen essential for plants? A2) Nitrogen is used in the synthesis of proteins and other compounds. So, now let us continue with our today’s class:   By the end of today’s class you will be able to            1)       Study various types of heterotrophic nutrition.          2)       Classify organisms on the basis of nutrition.          3)       Draw neat labelled diagram to show nutrition in amoeba. PLEASE COPY EVERYTHING IN YOUR BIOLOGY NOTEBOOK EXCEPT THAT WHICH IS WR

Lesson 3 Welcome back students! Let us check our answers of yesterday’s assignment. A1) c A2) c A3) Oxygen gas is released. Splitting of water molecules by light energy releases oxygen. A4) Desert plants keep their stomata closed during day time. They take up carbon dioxide at night and prepare an intermediate which is acted upon by the energy absorbed by the chlorophyll during the day. HOPE YOU GOT YOUR ANSWERS RIGHT! By the end of today’s class you will be able to 1.       Name the raw materials necessary for photosynthesis. 2.         Show that chlorophyll is necessary for photosynthesis with the help of an activity. 3.       Show that carbon dioxide is necessary for photosynthesis with the help of an activity. PLEASE COPY EVERYTHING IN YOUR BIOLOGY NOTEBOOK EXCEPT THAT WHICH IS WRITTEN IN RED. KEEP YOUR NCERT WITH YOU FOR ANY REFERENCE. THE RAW MATERIAS REQUIRED BY A PLANT FOR PHOTOSYNTHESIS ARE CO 2 AND H 2 O. WE WILL NOW SHOW THAT THESE T

                                                 TOPIC - LIFE PROCESSES                                                             CLASS 10 Welcome back students! LESSON 2 At the end of this lesson you will be able to: 1.      Define Photosynthesis. 2.      Write chemical equation for photosynthesis. 3.      Outline the steps of photosynthesis 4.      Draw a neat labelled diagram of cross- section of a leaf. 5.      Study the structure of stomata and draw its neat labelled diagram. Before we begin our lesson today, let us check our yesterday’s assignment. A1) Autotrophs are organisms that can prepare their own food with the help of inorganic sources such as carbon dioxide and water in the presence of sunlight and chlorophyll. Examples- green plants and some bacteria. A2) Enzymes are bio catalysts which help to speed up a reaction or process in our bodies. A3) The food (carbohydrates) prepared are stored in the form of starch in plants and i

                                                 TOPIC - LIFE PROCESSES                                                             CLASS 10 Dear students, Thank you for taking the first step and logging in! you are wonderful!  😊😊 LESSON 1 This is our first class for this chapter. At the end of the blog you will be able to: 1) Identify various life processes. 2) Know the importance of these processes. 3) Define nutrition. 4) Study the two main types of nutrition and distinguish between them. Happy learning! PLEASE COPY EVERYTHING IN YOUR BIOLOGY NOTEBOOK EXCEPT THAT WHICH IS WRITTEN IN RED. KEEP YOUR NCERT WITH YOU FOR ANY REFERENCE. INTRODUCTION HOW DO WE KNOW THAT AN ORGANISM IS ALIVE? If an organism shows any kind of movement, we say that the organism is alive.  Animals move, breathe (chest moves up and down) - they are alive. What about plants?  - there is no visible movement - they are green. Molecular movements are needed for life- building up processes - making of food , b