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