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