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