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