Notice: It seems you have Javascript disabled in your Browser. CBSE Biology Lab Manual for Class 10 PDF Download 1. Draw the various stages of its reproduction in a proper sequence. In CBSE Class 10 Board Exams, questions based on the reactions and diagrams form an essential part of the Science question paper. If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it? The leaves are covered by a thick cuticle: In evergreen plants, such as banyan, theleaves remain covered by a thick waxy cuticle. 3. The guard cells control the opening and closing of stomata. [CBSE 2011] Answer: The function of stomata are: (a) Help in the exchange of gases like carbon … ICSE Solutions for Chapter 4 Transpiration Class 10 Biology ICSE Solutions for Chapter 4 Transpiration Class 10 Biology Class 6; ... Open stomata, high humid atmosphere and well irrigated soil. Stomata are the tiny openings present on the epidermis of leaves. Stomata × (iii) … Also Read: CBSE Class 10 Science Practical Exam 2020: Check Latest Syllabus & Preparation Tips here. The CBSE is a prestigious educational board in India that conducts the final examinations for the Class 10. 8. Define an ecosystem. In order to submit a comment to this post, please write this code along with your comment: ba2d297b59c1fdd28e659d13fee5e391, Open & Closed Stomatal Pore Diagram| Biology Class-10 CBSE. Draw a ray diagram to find the position and size of the image formed. Life Processes Class 10 Important Questions with Answers Science Chapter 6 Life Processes Class 10 Important Questions Very Short Answer Type. Stomata control the flow of gases in and out of leaves. CBSE has included the practicals in secondary class intending to make students familiarised with the basic tools and techniques used in the labs. ... Guard cells and stomata Get 3 of 4 questions to level up! When water flows into the guard cells, they swell up. Class 10 Biology (India) Unit: Life processes. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid. To help all students in quick and effective revision before their Science exam, we have assembled all important chemical reactions and diagrams from NCERT Science. (iv) Name the stage prior to this stage and draw a diagram to represent the same. Answer. Draw a well labelled diagram of stomata. Every year, 8-9 questions are jointly asked on the basis of chemical reactions and diagram construction. (b) A fresh leaf gives better mount. Name a hormone secreted by: How is copper extracted from its sulphide ore? 7. (i) Xylem. Stomata are small pores present in the epidermis of leaves. Write the equation of the chemical reaction involved and the test to detect the gas. 2. In some of the plants, stomata are present on stems and other parts of plants. Draw a neat diagram of human brain and label on it the following parts: (i) Mid brain (ii) Pituitary gland (iii) Cerebellum (iv) Cerebrum. When water is lost from the guard cells, they shrink and become straight, thereby closing the stomata. 0. (a) Stomata is present in epidermal layer. During the day, when air temperatures rise and carbon dioxide levels are normal or above normal, the stomata open, allowing carbon dioxide to enter and photosynthesis to take place. (b) Glycerine has the property to retain water. Draw a labelled ray diagram to support your answer. (a) Zinc reacts with silver nitrate to produce zinc nitrate and silver. In others, they were required to construct a labelled diagram or identify different parts in a given diagram. Name, state and apply the rule to mark the direction of these field lines. Draw labelled diagram of the structure of stomata as seen under the microscope. This diagram is from my Biology notebook. List two functions of stomata. (c) stomata. (d) All the factors are … NCERT Class 10 Science Lab Manual Scoring Key With Explanation. It prevents desiccation, by preventing loss of water from the plant body. Also Read: CBSE Class 10 Science Important Preparation Tips for Physics, Chemistry & Biology. They regulate the process of transpiration and gaseous exchange. Show with the help of a flow diagram the path of the reflex action. What will be your observation in this case? Identify the type of reactions taking place in each of the following cases and write the balanced chemical equation for the reactions. 4. Identify ‘X’, ‘Y’ and ‘Z’. Learn. Epidermis – its main function is protection. Also Read: CBSE Class 10 Science Complete Study Material with Last Minute Preparation Tips for Board Exam 2020. It causes around 20% of transpiration in plants. Choose the correct option : (a) In plants, water is transported through. 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