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