NEW HORIZON SCHOOL WORKSHEET-1 CLASS-X LIFE PROCESSES

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1 WORKSHEET-1 LIFE PROCESSES Q1 Name the process of loss of water in the form of vapour from the aerial parts of the plant?1 Q2 Why do aquatic animals breath faster than the terrestrial animal? Q3 What will happen to plant if its xylem is removed? Q4 Which pancreatic enzyme is effective in digesting proteins? Q5 What is the role of acid in our stomach? Q6 Explain the process of nutrition in Amoeba. Q7 Define breathing explain the mechanism of breathing in human being? Q8 What are stomata? State its two functions. Q9 The factors which is not essential for the process of photosynthesis : a) Sunlight b) CO 2 c) H 2 O d) O 2 Q10 Name the mode of nutrition shown by following organisms: a) Cuscuta b) Leech c) Bread mould d) Blue green algae e) Human f) Mushroom Q11 Herbivores have longer small intestine than carnivores. Justify. Q12 What are villi write their location and functions? Q13 What is bile? write its function in human digestive system? Who produce it? In which structure it is stored? Q14 In which part of alimentary canal major amount of water is absorbed? Q15 What is glycolysis? Where does it takes place? Q16 What is Kreb cycle? Which type of organisms shows it? Where does it takes place? Q17 Differentiate between aerobic and anaerobic respiration. Q18 How muscle cramps arise? Q19 Write the properties of respiratory surfaces. Q 20 Trachea is surrounded by ring of cartilage. Give reason. Q21 Nasal passage is lined by hair. Give reason. Q22 Some amount of air still remains in the lungs even after forceful expiration. Justify. Q23 How does the process of inspiration and expiration takes place? Q24 How does the transportation of CO 2 and O 2 take place in blood? Q25 How does the opening and closing of stomata takes place? Q26 Desert plants open their stomata at night. Why? Q27 Explain the various steps involved in the process of photosynthesis.

2 WORKSHEET-2 LIFE PROCESSES Q1 Write the functions of blood. Q2 Draw a well labeled diagram of the following a) Human digestive system b) Human heart c) Human excretory system d) Excretory unit - nephron Q3 Explain the functioning of heart. Q4 Differentiate between single and double circulation. Q5 Mammals and birds are more efficient in energy production than reptiles and amphibians. Give reason. Q6 How blood pressure is measured? What is normal blood pressure of a human body? Q7 Differentiate between arteries and Vein. Q8 What is lymph? State its functions. Q9 How does transportation of water and food takes place in plants? Q10 What is transpiration? State its significance. How it is involved in the transportation of water or ascent of sap? Q11 Define translocation. How does it takes place? Q12 Write two major functions of kidney. Q13 Write the mechanism of urine formation. Q14 What is dialysis? When does it is used? Explain the process with the help of a diagram. Q15 What is the advantage of having four chamber heart? Q16 Your family has a plot of land in the city where your father wants to construct a house. The area has few trees which are very dear to your father. Your father does not want to cut the trees. At the same time he desperately needs a house for his family. a) Should your father construct the house after cutting the trees? b) Will simple planting of trees will do? c) What value are shown by your father?

3 WORKSHEET-3 CONTROL AND COORDINATION Q1 Name the hormone : a) Which bring change in male human during the beginning of adolescence. b) Which coordinate the level of blood sugar. Q2 What do you understand by the Peripheral nervous system and Central nervous system. Q3 What are receptor and effectors? Q4 What is a nerve impulse? How nerve impulse travel through synapse or neuromuscular junction. Q5 What is a) synapse b) neuromuscular junction Q6 Define reflex action with the help of a diagram. Q7 Give three examples of reflex action. What is reflex arc? Q8 Draw a flow chart to show various parts of the brain. Q9 Write the functions of the following parts of the brain : a) Pons b ) Medulla c) Cerebellum d) Cerebrum e) Mid brain Q10 How is central nervous system is protected? Q11 How does movement takes place in animals? Q12 Differentiate between tropic movement and nastic movement with example. Q13 Do plants have nervous system? How does control and coordination takes place in them? Q14 Define a) Hydrotropism b) Geotropism c) Phototropism d) Chemotropism Q15 What do you understand by plant growth regulators? Name them. Q16 How Auxin is responsible of phototropism? Explain. Q17 Write the functions of following plant hormones : a) Auxin b) Cytokinins c) Gibbrellins d) Abscisic acid e) ethylene Q18 What do you understand by Endocrine system? Q19 What is the advantage of endocrine system over nervous system? Q20 Write the location, hormone released and its function of the following endocrine gland : a) Pituitary gland b) Thyroid gland c) Pancreas d) Adrenal gland e) Testis f) Ovary Q21 What do you understand by feed back inhibition? Explain it with the help of an example.

4 WORKSHEET-3 HOW DO ORGANISMS REPRODUCE? Q1 Why is it that asexual reproduction produces exact copies but sometimes minorvariations are also seen in next progeny? Q2 With the help of a diagram demonstrate the process of regeneration as seen in Planaria. Which type of cells are used by such multicellular organisms to regenerate. Q4 Contrast the features of a unisexual reproduction and a bisexual reproduction with examples. Q5 Draw the diagram of a female reproductive system and label the part which : a) Produces egg in female germ cells b) Part where the zygote is formed c) Path for entry of sperms Q6 How does plasmodium reproduce? Is this method sexual or asexual? Q7 What will happen when : a) Accidentally Planaria gets cut into many pieces? b) Bryophyllum leaf falls on the wet soil? c) On maturation sporangia of Rhizopus burst? Q8 List any four steps involved in sexual reproduction and write its two advantages. Q9 State the changes that takes place in the uterus when : a) Implantation of embryo occurred b) Female gamete/ egg is not fertilized Q10 a) Name the organ that produces sperm as well as secretes a hormone in human males.. Name the hormone it secretes and writes its functions. b) Name the part of human female reproductive system where fertilization occurs. c) Explain how the developing embryo gets nourishment inside the mother s body. Q11 Differentiate between asexual and sexual reproduction Q12 Discuss the importance of vegetative reproduction. Why it is considered as asexual means of reproduction. Q13 Discuss the difference in process of binary fission in Amoeba and Leishmania. Q14 Name the part of the embryo forming root and shoot respectively. Q15 Differentiate between self pollination and cross pollination. Q16 Which part of the flower form seed and fruit.

5 WORKSHEET-4 HEREDITY AND EVOLUTION Q1 How is sex of a child determined in human beings? Q2 Why are the traits acquired during lifetime of an individual not inherited? Q3What factors will lead to rise of new species? Q4 What are fossils? What do they tell about the process of evolution? Q5 Why are human beings who look so different from each other in terms of size, color,and looks said to belong to the same species? Q6 Evolution and classification of organisms are interlinked. Give reason to justify this statement. Q7 Explain the terms analogous and homologous organs with examples. Q8 What evidence we have for the origin of life from inanimate matters? Q9 Explain how sexual reproduction give rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually? Q10How is equal genetic contribution of male and female parents ensured in the progeny? Q11 Given the pair of contrasting traits of the following characters in Pea plant and mention which is recessive. A) yellow seed B) Round seed Q12 a)name any four varieties of vegetables which have been produced from Wild cabbage by the process of artificial selection. b) Give one example of evolutionary change produced in an organisms for one purpose which later on becomes more useful for a different function. Q13 If we cross pure bred tall pea plant with pure bred dwarf Pea plant we will get Pea plants of F1 generation. If we now selfcross the Pea plant of F1 generation, then we obtain Pea plants of F2 generation. a) What do the plants of F1 generation look like? b) State the ratio of tall plants to dwarf plants in F2 generation. c) State the type of plants not found in F1 generation but appeared in F2 generation, mentioning the reason for the same.

6 WORKSHEET-5 OUR ENVIRONMENT Q1 Give two ways by which non biodegradable substances would affect the environment. Q2 What is the role of decomposers in the ecosystem? Q3 How can you help in reducing the problem of waste disposal? Give any two methods. Q4 What will happen if we kill all the herbivores in one trophic level? Q5 What is biological magnification? Why it happens? Q6 In the following food chain, 100 J of energy is available to the lion. How much energy is available to the producers? Plants Deer Lion Q7Why should biodegradable and non biodegradable wastes be discarded in two separate dustbins? Q8What are the advantage of cloth bags over plastic bags during shopping? Or Write the harmful effects of using plastic bags on the environment. Suggest alternatives to plastic bags. Q9 Why do we say that flow of energy in the ecosystem is unidirectional? Q10 What is an ecosystem? List its two main component. Q11 We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Explain. Q12 We often observe domestic waste decomposing to the by lanes of residential colonies. Suggest ways to make people realize that the improper disposal of waste is harmful to the environment. Q13 How is ozone formed in the upper atmosphere? What is its importance? What is responsible for its depletion. Q14 Name any two items which can be easily recycled but are generally thrown in the dustbins by us. Q15 Suggest one word for each of the following statements: a) The physical and biological world where we live in. b) Each level of food chain where transfer of energy takes place. c) The physical factors like temperature, rainfall, wind and soil of an ecosystem d) Organisms which depends on the producers either directly or indirectly for food.

7 WORKSHEET-6 MANAGEMENT OF NATURAL RESOURCES Q1 What can you as an individual do to reduce your consumption on various natural resources. Q2 List any two measures that you suggest for better management of water resources. Q3 Why is sustainable management of natural resources necessary? Which one out of reuse and recycle would you suggest to practice and why? Q3 Explain any two advantages associated with water harvesting at community. Q4 What is meant by three types of R to save environment? Explain with examples how would you follow the 3 R in your school to save the environment. Q5 Building of big dams gives rise to some problems. List three main problems that may arise. Suggest a solution to any one problem. Q6 Why do we need to manage our resources carefully? Why management of natural resources required a long term perspective? Q7 List two problems that may arise by planting trees of single variety over vast tracts of a forest. Q8 List any two advantages associated with water stored in the ground. Q9 Explain giving example where active involvement of local people lead to efficient management of forest. Q10 List two main causes of the pollution of water of the river Ganga. State how pollution and contamination of river water prove harmful for the health of the people of neighboring areas. Q11 List four stake holders which may be helpful in the conservation of forest. Q12 List four measures which can be taken to conserve forest.