2. This results into menopause. After some time these parts fall off. The chemical reaction that takes place in the mitochondria is called Electronic Transport Chain reaction. Habitat is a postal address while niche is the profession of organism. LH from pituitary stimulates the bursting of ovarian follicle and releases the mature oocyte out of the follicle and the ovarian wall. Placenta: An organ developed in the uterus of the pregnant mother, through which the embryo is given nourishment is called placenta. Hence, when a patient is declared as brain dead, he does not carry out any of the inclusive defining characters of living things (e.g. (c) Translocation (a) Auxin When they come in contact with an object, they entwine around the object and cling to it. Question 4. What is the type of asexual reproduction shown in the diagram below? Plants therefore have evolved variety of morphological and chemical defences against herbivores. (Try this: Text Book Pages 23 and 24), (1) Observation of Paramoecia. __________________________________________, 2. This limit is called nature's carrying capacity (K) for that species in that habitat. A niche is a concept, of how an organism lives or survives in the environmental conditions. c. Proteins. (d) spinal cord Answer: (6) Stem elongation: Gibberellin :: Cell division : . Synapse. Hyena, Bear, Rhinoceros, Hippopotamus, Langoor, Musk deer. It is an assemblage of species that form self-sustaining. There are no subtypes in the sexual reproduction. In summer, we sweat more due to excess heat. It is related to conservation of all biodiversity. Through the process of reproduction, living species continue their existence. Only under favourable conditions in the soil, this germination takes place. The cells in which chromosome number is double are known as diploid cells. After complete digestion of lipids they are converted to fatty acids and glycerol. Under the effect of these hormones, glands of endometrium of uterus are activated and it becomes ready for implantation. Cavities present in various parts of the brain are called ventricles whereas the long tubular cavity of the spinal cord is called the central canal. + = benefited, = inhibited, O = not affected In figure of Telophase-I the diploid chromosomes are seen in two daughter cells. If due to lack of co-ordination, there is confusion at any step, the activity may not get completed. Question 4. Why? (b) Write the symptoms of disease gonorrhea. (d) Translocation Predators also help in maintaining the species diversity in a community. Get information. + Fragmentation is one of the type of asexual reproduction in multicellular organisms. The nutrients help in the growth and development of the body. Question 2. Fallopian tubes/ducts. (b) Gravitropic Answer: (d) How much quantity of each vitamin is required every day? True, Question 4. Water and minerals enter the cells of the root surface due to difference in concentration. This semen is deposited in the vagina with help of penis. (Prokaryotes show fission by both the methods, i.e. Answer: (b) What do you mean by coenzymes? Habitat supports numerous species at a time. Only nucleus divides initially followed by division of cytoplasm. (Textbook page no. Answer: Protect various plant and animal species in our surrounding. [collapse], Chapter-1-Some Basic Concepts of Chemistry, Chapter 2: Introduction to analytical chemistry, Chapter-2-Systematics of Living Organisms, Chapter-5-Cell Structure and Organization, Part-1-Chapter-8-Plant Tissues and Anatomy, Part-2-Chapter-8-Plant Tissues and Anatomy, Part-1-Chapter-9-Morphology of Flowering Plants, Part-2-Chapter-9-Morphology of Flowering Plants, Class-11-MSBSHSE-Solutions : Adaptations are of following types : These maintenance function of living organisms are known as life processes. Four sequential levels with increasing complexity of ecological (biological) organizations are organism, Populations, Communities and Biomes. Part-2-Chapter-10-Magnetic Fields due to Electric Current Answer: Question 3. But now with the help of advanced medical techniques these problems can be overcome and a childless couple can be parents. Question 12. Answer: (a) Which co-enzymes are shown in the diagram? and the covering around the axons of nerve cells. Which are main types of cell division? ), Question 5. Agents of pollination. (a) Spinal cord Brood parasitism is a type of parasitic behaviour shown by Asian Koel. Some desert plants like Opuntia, have their leaves reduced (modified) to spines and the photosynthetic function is taken over by the flattened stems. Clown sh gets the protection from other predators, whereas, sea anemone does not derive any benefit from this association. Answer: Answer: Aerobic respiration takes place in nucleus as well as in cytoplasm. Set up bird and bat houses wherever possible. Habitat includes biotic components like plants, pathogens, parasites and predators. Chapter-1-Living World The niche is specific to each species. OR Glycolysis and fermentation are the two steps of anaerobic respiration. Answer: If meiosis does not take place in them, the gametes formed will also contain 46 chromosomes. Since resources for growth of most animal populations are finite and become limiting sooner or later, the logistic growth model is considered as a more realistic one. Two essential whorls in flower. Modern techniques like surrogate mother, sperm bank and IVF technique will help the human beings. Pituitary gland secretes FSH and LH. These insects are then captured by egrets. ), Question 2. Calyx : Sepals : : Corolla : . (c) phototropic Cell division is very essential for all the living organisms. (a) Metabolism The milk was boiling over. Parent hydras dermal layers and digestive cavity are in continuity with those of the budding hydra. Answer: 20) Nephron Answer: Life Processes In Living Organisms Class 9 Questions And Answers Question 4. Fatty acids and amino acids both are converted to acetyl-coenzyme-A. are controlled by . Human excretory system Answer: 6. Question 11. [Students are expected to perform the given activity by themselves under the guidance of their teacher.]. Corpus luteum. By protein synthesis, these amino acids are again used to make different kinds of proteins which our body needs. There are two triangular swollen structure called . (a) 500 ml Glycolysis can take place in both aerobic and anaerobic respiration. http://lib.unipune.ac.in:8080/xmlui/bitstreamfhandle/l23456789/7451/07_introduction.pdf? Balbharti Maharashtra State Board Class 8 Science Solutions Chapter 1 Living World and Classification of Microbes Notes, Textbook Exercise Important Questions and Answers. Plants need less energy as compared to animals. Fat soluble vitamins are A, D, E and K. Question 4. Spinal nerves are associated with head, thorax and abdomen. Excess of ATP molecules obtained from proteins are not stored in the body. Hormones from pituitary, FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone) and hormones from ovary, estrogen and progesterone control the menstrual cycle. Answer: 9th Class Science Chapter 15 Life Processes In Living Organisms Exercise Question 4. Which food items provide rich fibre content? Nourishment of the growing embryo. There are two triangular swollen structures called pyramids on the upper side of medulla oblongata. The complex life cycles are seen in such parasites which involve intermediate hosts or vectors to facilitate transfer to the host. (i) Prophase: During prophase, condensation of chromosomes starts. Somatic and stem cells undergo type of mitosis division. (d) cell membrane Therefore, our muscles and other tissues perform anaerobic respiration in such condition. There are total four floral whorls. helps in stem elongation. Answer: Desert lizards manage to keep their body temperature fairly constant by behavioural adaptations. Answer: Non-living things do not have a finite life span. These glands do not have any arrangement of their own to either store or carry their secretions. Ventricles. Testes are in pair. Plant cells change their shape by increasing or decreasing the water content and thereby, bring about the movements of plants. Controls metabolism of calcium and phosphorus. Question 2. Mitosis takes place both in somatic cells and germinal cells. 1. Question 3. Botanical gardens are important for their records of local flora. What would have been happened if any of the cells in nature had not been divided by meiosis? the molecules called phospholipids which are essential for producing plasma membrane are formed from fatty acids. Answer: Fats or lipids are converted into fatty acids and proteins are broken down to amino acids. (All others are parts of gynoecium.). Answer: Question 5. [collapse]. 17) (2) There are certain chemical bonds between fatty acids and alcohol. The lotus flower opens during day-time.? Legally protected areas include national parks, wildlife sanctuaries and biosphere reserves. ), Question 2. Different microbes and decomposers have various shapes and sizes. Distribution of animals and plant species is mainly dependent on the ambient temperature. Mathematics-1 : He is currently a faculty of Dr. Babasaheb Ambedkar Marathwada University, Aurangabad. Here, molecules of water and some other useful substances are reabsorbed into the blood. in men. Question 2. The full growth of female body is not completed till the age of 18. A particular plant is strictly seasonal plant. To prevent such unfavourable effect, they are given, juices or drinks. Nutrition. The structure called synaptonemal complex develops to hold chromosomes in place during this pairing. Stimulates growth of secondary sexual characteristics like beard, mustache, hoarse voice etc. Habitat supports numerous species at a time. (c) The axonal coverings around the neurons are also made from fatty acids. Production of sperms and male hormone-testosterone. Plants can be further classified on their shape, size, structure, mode of reproduction, etc. Prophase-I: Prophase I of meiosis is much longer phase of the meiosis. If glycolysis occurs in absence of oxygen, it produces alcohol. Observe the following figures carefully. Two children developing from two different zygotes are called dizygotic twins. It is a place where there is an assemblage of living plants maintained for botanical teaching and research purpose. The digestive juices of stomach make pH of digestive tract acidic while that of intestinal juice make it alkaline. Testis secrete testosterone which is essential male hormone. Answer: Maharashtra state board 11th textbook for Biology includes in-depth knowledge of topics such as the living world, systematics of living organisms, kingdom Plantae and Animalia, biomolecules, cell division, photosynthesis, and human nutrition. Part-2-Chapter-8-Electrostatics (b) Growth Glucose is oxidized step by step in the cells during the process of respiration at the body level. Question 4. Thus initiation of birth process is possible due to contractions of uterus. Answer: Dietary fibre found mainly in fruits, vegetables, whole grains and legumes is probably best known for its ability to prevent or relieve constipation. Till 18 years of age the physical and emotional maturity is not attained. Part-1-Chapter-2-Mathematical Methods An immediate and involuntary response given to a stimulus from the environment is called a reflex action. Each kidney has approximately . One should be careful about sexual relationships. This is due to social customs, traditions, illiteracy, social taboo and shyness. 3 molecules of ATP are obtained from each NADH2 molecule and 2 molecules of ATP from each FADH2. Levels of organization in the living world are, macromolecules, cells, tissues, organs, individual organism, population, communities, ecosystems and biomes. Ovary and uterus undergo changes during menstrual cycle. In case of plants like sugarcane and grasses, buds present on nodes perform vegetative propagation. Urethra and vagina are two separate openings that open to outside. Their meiotic cell division is abnormal and thus oocyte becomes abnormal too. Transverse binary fission : Paramoecium : : Longitudinal binary fission : Euglena, Question 3. More recent studies do not support such gross generalisations about competition. These are series of cyclic chain reactions which begins with acetyl-coenzyme-A molecules which act with molecules of oxaloacetic acid. Answer: The hormone thymosin is secreted by the thymus gland. are the waste products of plants. Answer: [For detailed information on practicals, refer to Vikas Science and Technology Experiment Book: Standard X]. 19 and answer the following questions. Part-1-Chapter-4-Structure of Atom Most of the plant and animal interactions are of mutualistic type. This will create abnormality. determine the similarity among the parent organisms and their, offspring. As a result, water enters the cell by the process of diffusion. Endosperm: Endosperm is the nourishing substance formed by the union of second male gamete with two polar nuclei at the time of fertilization in plants. The voluntary muscles bring about all the movements according to our will. This information is given at lower right comer of sheet and is called label. Answer: Prevent felling of trees especially native plants or trees in a particular area. During summer, the environmental temperatures are high. How much energy do they provide? Excretion is a simpler process in plants. Unusually rapid heartbeat, particularly with exercise, Shortness of breath and headache, particularly with exercise, Pain in the limbs, and especially the legs, swelling in some parts of the body. (a) The sum total of all the chemical reactions occurring in the body is known as metabolism and no non-living object exhibits metabolism. In all the cells, plasma membrane is formed by proteins. Question 1. Explain sexual reproduction in plants. 17) Carbohydrates are converted to glucose after the process of digestion is completed. Activities like heart beat, blood circulation, breathing, sneezing, etc. In birds, each one is specific in their eating habits, some are insectivorous, while some are frugivorous. After the food is digested, the important nutrients are absorbed into the blood and the undigested food and residue of digested food is removed out of the body through the anus. 17). Sometimes, we choke while eating in a hurry. (i) Surrogacy: In woman if there is problem regarding the implantation of embryo in uterus, then help of another women is taken. (b) Perspiration (1) The fatty acids are components of the lipids. The Gauses principle may be true if resources are limiting, but not otherwise. (Text Book Page No. Gibberellin, Auxin, Thyroxine, Cytokinin. In this way because two nuclei participate in the fertilization process, therefore it is called double fertilization. FSH : Development of qocyte : : LH : Ovulation. Chapter-4-Thermodynamics Excretory system helps in the removal of nitrogenous waste materials produced in the human body. Co-enzymes always act along the enzymes. When there are favourable conditions and abundant food supply then the organisms undergo binary fission. what is the difference between living and non-living things? False. Answer: The co-enzymes NADH2 and FADH2 are shown in the above diagram. (1) Some couples want a child but they are not able to bear one due to various problems either in mother or in father. (f) Black panthers have frequently been spotted at various locations in the Western Ghats and mining in these areas can seriously affect their health and numbers. Yeast is unicellular fungus that performs budding. Part-1-Chapter-1-Units and Measurements There are pair of ovaries, pair of fallopian ducts and a single median uterus. Non-living things show growth by accumulation of materials on their surface. Therefore, Indians should follow family planning for controlling the population. The solution accumulated in the cavity of Bowmans capsule passes into the tubular part of the nephron. Answer: Different glands associated with male reproductive system. Many desert plants have a thick cuticle on their leaf surfaces and have their stomata in deep pits to minimize loss of water through transpiration. SYSTEMATICS OF LIVING ORGANISMS by. Skin : Keratin :: Blood : At the end of glycolysis, molecules are obtained. Answer: Glucose is oxidized by three steps during aerobic respiration, viz. Question 4. Seashells are an important part of the coastal ecosystem and are crucial for the survival of various marine creatures. = 40 ATP When we are exercising there is increased demand of oxygen for muscle cells. (Luteinizing hormone, endometrium of uterus, follicle stimulating hormone, estrogen, progesterone, corpus luteum) . Answer: When inhalation is done, air enters the lungs. (a) Sensory, Question 11. [Source: http://faunaofindia.nic.in/PDFVolumes/spb/056/index.pdf] In the polar seas, aquatic mammals like seals have a thick layer of fat (blubber) below their skin acting as an insulator to reduce loss of body heat. New individual formed by this method is genetically different from parents. Fertilization in plants is called double fertilization. This is seen in some insects. Green plants, certain microbes). Population ecology : An important area of ecology that links ecology to population dynamics, genetics and evolution. These are Process of production and spore formation occurs by meiosis. Therefore, the soil characteristics are also varied. (d) Chemiotropic Question 5. (b) fallopian duct Answer: movement. Answer: e. Explain the Krebs cycle with reaction. Seminal vesicles. Answer: 15.Life Processes In Living Organisms Question 1. Give justification for your opinion. Answer: In unicellular organisms, waste materials are directly eliminated across the cell surface. Question 4. Budding in hydra: Budding in hydra is asexual reproductive process in which an outgrowth is formed by repeated divisions of regenerative cells of body wall called bud. False. Your hands may also begin to itch if you try to cut these leaves. It is not done with the intention of producing offspring, but is for healing or repairing the lost part. June 1, 2021 rohit Uncategorized 0. . What are methods of reproduction in plants? Which hormones regulating reproductive functions are produced from fatty acids? Give scientific reasons. Progressive decrease of the temperature from the equator towards the poles and from plains to the mountain tops. Since, such patients do not show any sign of self-consciousness, these patients cannot exactly be called as living. Protection of inner whorls of the flower. Why does this happen? (b) Euglena Answer: The cerebrum occupies two-thirds of the brain. (c) Hydrotropic In vaginal walls there are Bartholins glands. Answer: Certain organisms like mules and worker bees do not reproduce and are still living. are controlled by cerebellum. Answer: The most fit organisms succeed by survival and reproduction. One set of chromosomes reach each pole by the end of the anaphase. Penis. Most botanical gardens exhibit ornamental plants which require stringent/ optimum climatic conditions for their growth and/or flowering. Due to rapid increase in human population and industrialization, humans have over-utilized natural resources; leading to degradation of the environment and hence only humans can help conserve the ecosystem. Answer: (c) Which is the nerve shown by 4? Required fields are marked *. 1. Answer: Answer: This is called phototropic movement. (4) Diplotene: During diplotene, synaptonemal complex dissolves and the homologous chromosomes of the bivalents separate except at the point of crossing over. Answer: (b) Prepare a slogan for campaign against female foeticide. 3500 species of birds, animals and reptiles. Use of ICT. Nourishment of sperms. Question 4. 1 from father. They act as reference hubs for biodiversity studies. (Text Book Page No. Tingling sensation, sharp, jabbing, throbbing, freezing or burning pain. Vagina is the birth canal as well as copulatory passage. In such case, to survive, higher plants switch over to anaerobic respiration. Answer: Therefore, Krebs cycle is also called citric acid cycle. (c) incomplete (i) Chemical control is brought about by chemical substances called hormones. a. (8) Converts glucose to glycogen : Insulin :: Converts glycogen to glucose : . Placenta. Question 6. Hence, in plants like Touch-me-not (Mimosa) movement also occurs at the places other than where it has been touched. Answer: So, the process of urination is not under control. Therefore, oxygen is necessary for complete oxidation of glucose. They have very high reproductive capacity. This cycle is named after him. Ovarian follicle along with oocyte grows/regenerates under the effect of estrogen. Lactose sugar is converted into glucose.
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