Give three reasons in support of the statement. ... 4.0.4 Explain the structure of stomata. These pores are called stomata. (ii)Transpiration in plants takes place through stomata. These openings are surrounded with guard cells. (CCE 2015) Answer: State any two functions of the cells that surround the stomata. The epidermis is made up of single layer of cells. Functions of stomata: 1. Explain the mechanism of closing and opening of stomata. (a) Draw a labeled diagram of stomata. (b) Two functions of stomata are: (i) Exchange of gases between the plant and the atmosphere takes place through stomata. Each stoma remains surrounded by two kidneys or bean shaped epidermal cells the guard cells. The stomatal pore is guarded by two kidney shaped guard cells. Types of Stomata 3. Write any two functions of it. It helps in the transpiration of water, i.e., the loss of excess water from the plant. Q5. Q6. (ii)Transpiration in plants takes place through stomata. Top function of Stomata. 2. Answer. (b) State two functions of stomata. Give two ‘reasons for the appearance of variations among the progeny formed by sexual reproduction. Q7. Question 5: State the functions of guard cells. ... State the role of saliva in the digestion of food. The two main uses are: 1)The stomata is responsible for the interchange of gases for respiration and photosynthesis. Write functions of guard cells. NCERT Solutions for Class 10 Science Chapter 6 Life Processes all intext question and exercises answers in PDF Hindi and English 2020-21. State its functions in case of pregnant human female. 3. Name the category of plants which keep their stomata open during the night and closed during the day. Name the epidermal cells surrounding the guard cells. (c) Opening and Closing of Stomatal Pore: The opening and closing of the pore is a function … Q4. (c) How do guard cells regulate the opening and closing of stomatal pore? Explain why leaf is preferred for preparation of temporary mount to show stomata. (c) How do guard cells regulate the opening and closing of stomatal pore? Loss of water from the stomata creates an upward pull, i.e., suction pull which helps in absorption of water from the roots. Epidermis on the aerial parts of the plants often secrete a waxy, water-resistant layer on their outer surface. All over the plant body epidermis is present. Question 38. * The number of stomata on a plant leaf/organ is highly dependent on the type of plant as well as its habitat. Ultrastructure of Guard Cells In different types of plants, guard cells have been shown to contain varying amounts of the typical cell organelles (among other structures) with some unique characteristics. Reproduction is one of the most important characteristics of living beings. NCERT Class 10 Science Lab Manual – Stomata. What is placenta? (CCE 2015) Answer: Functions of Guard Cells : Opening and closing of stomata. Biology Practicals For Class 10 CBSE. Describe its structure. (a) (b) Two functions of stomata are: (i) Exchange of gases between the plant and the atmosphere takes place through stomata. This is how the two processes are interrelated. 2)The stomata allow for the loss of excess water in the form of water vapour, which also allows for cooling. Definition of Stomata: The stomata are minute pores which occur in the epidermis of the plants. [CBSE 2012] Answer: (a) Open stomatal (b) (i) It helps in the exchange of gases like carbon dioxide and oxygen as per the requirement for the photosynthesis and respiration of … Stomata Experiment Class 10 Introduction. Definition of Stomata 2. The stomata may occur on any part of a plant except the roots. Allowing exchange of gases and transpiration. (b) State two functions of stomata. State two functions of stomata. (b) State the conditions necessary for photosynthesis and give its chemical equation. 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