biology form three reproduction

Plants like water lily produce seeds whose seed coats trap air bubbles. Penis and testis enlarge and produce sperms. Ovulation in the human female normally takes place during the menstrual cycle (a) at the mind secretory phase (b) just before the end of the secretory phase (c) at the beginning of the proliferative phase (d) at the end … For Study plan details. Homologous chromosomes lie side by side in the process of synapsis forming pairs called bivalents. Reproduction may be SEXUAL or ASEXUAL. Bulb is a modified underground shoot having fresh strong leaves. Based on the SPM Form 5 Biology syllabus. TOPIC 1: CLASSIFICATION OF LIVING THINGS, TOPIC 2: MOVEMENT. Advertisements. Mexican poppy. Introduction to Classification I. The amnion surrounds the embryo forming a fluid filled cavity within which the embryo lies. State three characteristics that ensure cross-pollination takes place in flowering plants. These methods include: Female condoms are equivalent to male condoms in that: The Importance of Male Involvement in Family Planning, Outline the importance of male involvement in family planning. You will have the content in your phone/computer to read anytime. During this time the following take place: Replication of genetic material so that daughter cells will have the same number of chromosomes as the parent cell. Ensures that the chromosomal constitution of the offspring is the same as the parents. This video is unavailable. On this page you can read or download klb form 3 biology notes in PDF format. sunflower. Lesson 2Human reproductive system 2. Email: … The zygote develops into a new similar species. (Cell plate formation). The head of the sperm penetrates the egg after the acrosome_ releases lytic enzymes to dissolve the egg membrane. Depending on the type of organisms asexual reproduction may be of different forms or ways such as: This is an asexual reproduction in which an organism divides into two equal parts, which are identical to each other. The fully developed foetus responds to touch and noises and moves vigorously. apple and pineapple which develops from an inflorescence. Example lifting heavy loads, Taking any medicine not prescribed by the doctor, Taking drugs such as alcohol, cigarettes which could be detrimental to the unborn baby, It contains antibodies that are much needed to the child, In case the mother has no health problems such milk is free from contamination, Mother’s milk also contains much proteins and vitamins which are very important for the child’s growth, Mother’s milk is said to contain some chemicals which help in development of the nervous system of the child, To ensure frequent medical check up for both maternal and child, Avoid sharing sharp objects like razor blades, Counseling in order to help them deal with their feelings of loss and grief, To avoid discrimination for people living with HIV/AIDS, Ensure the use of polite language when providing care to them, Wearing of gloves when cleaning their bodies and clothes. (1m)9 (b) What is the name the proteins in the above excerpt. Ovary is divided into a number of loculi. Obtain different fruits - oranges, mangoes, maize, castor oil, bean pod, black jack . At the end of this prophase the number of chromosomes in each cell is half the chromosomes number cell. BIOLOGY FORM THREE OTHER TOPICS Oxygen from the maternal blood diffuses into the foetal blood while carbon (IV) oxide from foetal blood diffuse into maternal blood. Harmful microorganisms 4. The three germ layers form endoderm, mesoderm and ectoderm. This is the most affordable option. The integuments develops into seed coat (testa). BIOLOGY Form 3 Topics , Classification Of Living Things Movement Coordination Excretion Regulation Reproduction Form 1 Form 2 Form 3 Form 4 Form 5 Form 6 Sexuality is the function of whole personality begins at birth and end at death it includes: Social Cultural Factors Influencing Sexual Behaviour in Different Age Groups of People, Mention social cultural factors influencing sexual behaviour in different age groups of people. Secondary school biology notes for … They fuse with the haploid(n) sex gamete of the opposite sex to form a diploid(2n) cell during reproduction. Other cell groups initiate the placenta and umbilical cord, which will bring in nutrients and eliminate waste. The follicle stimulating hormone (FSH) causes the Graafian follicle to develop and also stimulate the ovary to release oestrogen. TOPIC 5: REGULATION These gametes fuse to form a new cell called zygote, which grows and develops into a new individual. This notes covers the following topics: The Plant Cell and the Cell Cycle, The Organization of the Plant Body: Cells, Tissues, and Meristems, The Shoot System: The Stem and the Form and Structure of Leaves,The Root System, Concepts of Metabolism, Respiration, Photosynthesis, Absorption and Transport systems, Life Cycles: Meiosis and the Alternation of Generations, The Flower and Sexual … Irregular flower can be divided into two halves in only one plane e.g. Leave a Comment X. Is the male part of the flower. If you don't see any interesting for you, use our search form on bottom ↓ . Add to cart. The luteinising hormone stimulates the corpus luteum to secrete a hormone called progesterone which stimulates the thickening and vascularisation of endometrium. Jaa; REPRODUCTION IN PLANTS AND ANIMALS. Lessons (27) SHARE. Ovary produces ova, estrogen and progesterone as female sex hormones. Contact. Sexual Reproduction in Plants and Animals: The mode of reproduction which involves the formation of male and female gametes either by the same individuals or by different individuals of opposite sex is known as sexual … 1. The pericarp and seed coat are waterproof. The reproductive parts in animals produce gametes that fuse and form a zygote. Parents and teachers strictly supervising teenagers at home and school, respectively. Spindle fibres are fully formed and attached to the centromeres. Comment. The process by which mature individuals produce offspring. Social cultural practices, which enhance family planning, include the natural methods of family planning, which are: It is said to be unrealistic for many to practice this method, Regularity of ovulation may cause fluctuation of temperature. Original Notes. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Reproduction in Plants and Animals | Biology. The second meiotic division takes place just like mitosis. The tube nucleus occupies the position at the tip of the growing pollen tube. The following are the way of minimizing occurrence of complications and disorders of the reproductive system. Each testis is a mass of numerous coiled tubes called semniferous tubules. Home Form Three BIOLOGY FORM 3 - REPRODUCTION -2 BIOLOGY FORM 3 - REPRODUCTION -2 msomi 5:20 PM. These include:-rhizopus, amoeba and yeast . The uterus is a hollow muscular organ found in the lower abdomen. The nucleolus reappears and nuclear membrane is formed around each set of chromatids. Cytoplasm divides and four daughter cells are formed. There are two types of reproduction: sexual and asexual Sexual reproduction involves the fusion of male and female gametes to form a zygote. Long, hairy style to expose the stigma outside the flower. The tips of sporangiophore become swollen to form sporangia, the spore bearing structure. There are many reasons why couples can’t produce children, some of them are: The Concept of Artificial Insemination and its Importance, Explain the concept of artificial insemination and its importance, Explain the causes of multiple pregnancies, Difference between Identical Twins and Fraternal Twins, Differentiate between identical twins and fraternal twins, Types of Disorders of Human Reproductive System, Mention types of disorders of human reproductive system, The Causes and Effects of the Reproductive System Disorders, Explain the causes and effects of the reproductive system disorders. This is the arrangement of the ovules in an ovary. After releasing the ovum, the Graafian follicle changes into a yellow body called corpus luteum. Each stamen consists of a filament whose end has an anther. Some variations may have undesirable qualities. Replenishing Soil Fertility in Africa - World. 3. Classification II; Ecology; Reproduction in Plants and Animals; Growth and Development; WhatsApp us … REPRODUCTION IN PLANTS AND ANIMALS - Form 3 Biology Notes . Fallopian tube: It is also known as egg tube/oviduct, it is a funnel shaped opening. 01 Introduction to Biology. Placenta facilitates the removal of nitrogenous wastes from the foetus' blood to maternal blood. Labels: BIOLOGY 2---FORM SIX ( F 6 )----STUDY NOTES AND PAST PAPERS. Sexuality includes fondness or readiness for or interest in a sexual activity. 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Rhizopus is a saprophytic fungus which grows on various substrate such as bread, rotting fruits or other decaying organic matter. Form 3 Biology video questions and answers on reproduction in plants. After ovulation progesterone hormone is produced. berries and drupes and dry fruits. the outer wall of the blastocyst develops finger like projections which project into the uterine wall for attachment. The anther is removed and placed on a microscope slide. morning glory. This involves replication of chromosomes, organelles and build up of energy to be used during the meiotic division. The placenta appears as one ridge on the ovary wall e.g. We charge 100/ only per subject. These stages of cell division occur in a smooth and continuous pattern. If the carpes are free, it is called apocarpous as in rose and Bryophyllum. Pressure inside the pod forces it to open along lines of weakness throwing seeds away from parent plant. Form 3 Biology reproduction in animals questions and answers. Reproduction is an essential characteristic of all living organisms. Feathery stigmas with a large sticky surface so they are more likely to catch pollen from the air. Sexual reproduction involves the fusion of male and female gametes to form a zygote. Oestrogen brings about the repair and healing of the inner lining of the uterus (endometrium) which had been destroyed during menstruation. Become our. Download klb form 3 biology notes document. Division of cell organelles such as mitochondria, ribosomes and centrioles. The inner lining endometrium supplies nutrients to embryo. The objective is to aid revision and provide notes. (2m)12 (i)Haploid (ii)Diploid 6. BOOK FREE CLASS; COMPETITIVE EXAMS. People go for family planning or control for a number of reasons. BIOLOGY 2---FORM SIX ( F 6 )---REPRODUCTION---STUDY NOTES---TANZANIA----- ( PDF ) Posted by MWL JAPHET MASATU , BLOGGER-- ( WhatsApp + 255 716 924136 ) at 03:59. Binary fission in amoeba A detailed account of what happens after fertilisation is given below: Describe the male and female reproductive systems. 1. The placenta is formed at the base of the ovary e.g. The water content of the seed decreases drastically so the seed is prepared for dormancy. Note the scent, colour and nectar guides. Types of Complications of the Reproductive Systems, Mention types of complications of the reproductive systems, Causes of Complications of the Reproductive System, Outline causes of complications of the reproductive system, Ways to Minimize the Occurrence of Complications and Disorders of the Reproductive System, Suggest ways to minimize the occurrence of complications and disorders of the reproductive system. TAGS; BIOLOGY; Facebook. In humans, like animals, female reproductive system is composed of: The male mammal reproductive system is composed of: The Process of Gamete Formation in Mammals, Outline the process of gamete formation in mammals. (8m)20 (i) (ii) (iii) (iv) Faster maturity can cause overcrowding and stiff competition. Preservation of food Activities ETV : 궹ꪫꪺꭏ꙳ 뷒ꕾ룪껆 : 궹ꪫ꫾ꕛ뺯ꪾꙨꓖꅈ Chapter 8 The Ecosystem 1. It allows no movement of sperm out of the penis and also the urine. Form 3 Biology – REPRODUCTION -1. Others have fruits with hooks or spines that stick on animal fur or on clothes. If you don't see any interesting for you, use our search form on bottom ↓ . True fruits can be divided into fleshy or succulent fruits e.g. The head turns and faces downwards ready for birth. Click the button below to download the full Biology Form Three Notes pdf document, with all the topics. Make sure you enter all the required information, indicated by an asterisk (*). No nectar produced because they is no need to attract pollinators to the flower. Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Notes – PDF Download. Oestrogen level stimulates the pituitary gland to produce (Luteinising Hormone (L.H). PAST PAPERS: TABORA REGION-FORM FOUR MOCK EXAMINATION, 2020. Factors influence sexual behavior in Children: Factors influence sexual behaviour in adolescents: Difference Between Responsible and Irresponsible Sexual Behaviour and Their Impact on Oneself Family and Community, Differentiate responsible from irresponsible sexual behaviour and their impact on oneself family and community, Ways of Eradicating Irresponsible Sexual Behaviours/Practices in the Family and Community, Suggest ways of eradicating irresponsible sexual behaviours/ practices in the family and community, Appropriate Life Skills Required to Cope with Adolescent Sexuality and Sexual Behaviour, Mention appropriate life skills required to cope with adolescent sexuality and sexual behaviour. Following are the two modes of reproduction − Sexual reproduction. BIOLOGY FORM 5 NOTES CHAPTER 4 : REPRODUCTION AND GROWTH 4.1 GAMETE FORMATION. Twitter. Edited Notes. The offspring are identical to the parent. Sexual Reproduction in Plants and Animals: The mode of reproduction which involves the formation of male and female gametes either by the same individuals or by different individuals of opposite sex is known as sexual reproduction. Binary fission in amoeba. Embryonic membranes develop around the embryo. It is a comparatively rare process of reproduction of bacteria observed in few like Rhodopseudomonas.It is a process by which the vegetative cell forms a lateral protuburance in the form of an outer bulge containing a fragment of genetic material or nucleoid in it. The pollen tube enters the ovule through the micropyle. What’s the long form of DNA. Budding involves the formation of a protrusion called a bud from the body of the organism. Cytoplasm divides to separate the two daughter cells. Note that the fruit wall is not differentiated. The primary oocyte is a diploid cell whereas secondary oocyte is a haploid cell. The nucleolus and nuclear membrane disintegrate and disappear. Saved . False fruits develops from other parts such as calyx, corolla and receptacle, e.g. In plants cells, it is due to deposition of cellulose along the equator of the cell. As in mitosis the cell prepares for division. Biology Form 3 Human & Plant Reproduction. It is the most effective method of preventing conception, The approximated rate of failure of this method is zero percent, The method is said to be natural and widely acceptable, It requires good knowledge and good record keeping, Irregularity of the menstrual period (cycle), The method is said to be 76-80% effective, It does not require fitting and regular checkups, The approximate failure is said to be 20-24%, Sperms released to a female tract a few day before ovulation may survive until ovulation, Irregularity of the ovulation may cause fluctuation of temperature, It does not require fitting and regular check ups, The method requires some degree of will power, It has a high failure rate in case fluid released from the penis just before ejaculation may contain viable sperms, Sperms may leak from penis before is withdrawal even without ejaculation, Condoms are said to be 85% to 93% reliable when used properly (handled with care), They may help prevention of sexually transmitted diseases such as fungal infection, Condoms can tear and leak. Some life skills required to cope with adolescent sexuality and sexual behaviour include the following: The Concept of Family Planning and Contraception, Explain the concept of family planning and contraception. The bivalents move to the equator of the spindles. All these fluids together with spermatozoa form semen. Binary fission also occurs in bacteria, Paramecium, Trypanosoma and Euglena. It is very important for a couple to space its family properly. BIOLOGY FORM 3 NOTES KCSE – BIOLOGY FORM 3 NOTES 10.0.0 Classification II (35 Lessons) 11.0.0 Ecology (55 Lessons) 12.0.0 Reproduction in Plants and Animals (50 Lessons) 13.0.0 Growth and Development (20 Lessons) CLICK HERE TO DOWNLOAD NOTES Chromosomes shorten and thicken hence become more visible. HTML code is not allowed. Spindle fibres begin to form, and connect the centriole pairs to the opposite poles. Offspring have a great chance of inheriting diseases from the parent, The sexual reproduction produces few numbers of offspring, It leads to great chance of spreading diseases, It takes a long time until offspring are produced. in sunflower. Chromatids begin to separate at the centromere. Previous Page. Flowers are classified either as complete or incomplete. Asexual Reproduction is a kind of reproduction where offspring's arise from a single parent. If you don't see any interesting for you, use our search form on bottom ↓ . In the uterus the embryo develops villi which project into uterus for nourishment later the villi and endometrium develop into placenta. Production of individuals with gametes 5. Different stages of meiosis are observed. Useful microorganisms 3. As it matures and ripens, it turns black in colour. The embryo is implanted into the inner uterine wall- the endometrium which nourishes the embryo. The bud separates from the parent cell, in yeast budding goes on so fast and the first bud starts to form another bud before the separation. Testerone is the main androgen that stimulates the development of secondary sexual characteristics. Biology Form Three Notes PDF Download (easyelimu-biology-form-3.pdf) CLICK HERE to get "Biology Form Three Notes PDF Download" on Whatsapp. Science Form 3 note GOOD LUCK Teacher zaidi@maher2010 CHAPTER 4: REPRODUCTION SEXUAL AND ASEXUAL REPRODUCTION 1. The centre of the nucleus is referred to as the equator. Observe the cut surface and draw and label the parts. New offspring may carry undesirable qualities from parents. WhatsApp. A description of the calyx, corolla, androecium and gynoecium is made. Page 13 of 21 Downloaded from Wyzed Educational Consultants’ Website FORM 3 1. If you don't see any interesting for you, use our search form on bottom ↓ . Fruits and seeds are small and light in order to be carried by air currents. This document contains Notes on the Following Topics and Subtopics in Form Three. A typical flower consists of the following parts: They enclose and protect the flower when it is in a bud. Form 4 Biology. CLASSIFICATION 2 Principles of classification Survey of kingdoms: a) Monera b) Protoctista c) Fungi d) Plantae Divisions of kingdom Plantae: Bryophyta Pteridophyta Spermatophyta e) Animalia Phyla of Kingdom Animalia: i. Reproduction past papers questions form three Biology - acaproso Locomotion 6. Those changes are known as secondary sexual characteristics. tobacco split or has pores at the top e.g. Other cells begin to form support structures. You get all topics/full set papers at a lesser price than if you bought per paper/ per topic. Later the seeds are brushed of or fall off on their own e.g. In this lesson we shall discuss three types of asexual reproduction. In this kind of reproduction, in same organisms, body part such as roots, stems or leaves may become reproductive body organs. There are two types of reproduction: sexual and … Download Biology Form Three Notes PDF to Print or Offline Reading. It is very important that a couple gets only a number of children they can afford and care for. Closely observing what your child watches on television and in the movies or is exposed to in music and on the Internet. This ensures that sperms are maintained at a temperature lower than that of the main body. The seeds pass through the digestive tract undamaged and are passed out with faeces. Sexual Reproduction. Self sterility or incompatibility: Pollen grains are sterile to the stigma of the same flower, e.g. Fruits like coconut have fibrous mescocarp which is spongy to trap air, the trapped air make the fruit light and buoyant to float on water. beans. The centromeres of the homologous pairs migrate towards the opposite poles where they are attracted. Chromosomes may become coiled around each other and the chromatids may remain in contact at points called chiasmata (singular chiasma). On the other side, the amnion fills with fluid and will surround the embryo as it develops. This worksheet is obviously adaptable for different abilities. orange. The type of reproduction through the fusion of male and female gametes is known as sexual reproduction. Being in danger of contracting fatal venereal disease such as syphilis, HIV/AIDS, gonorrhea etc. Msomi Maktaba | Notes za O level na A level all subjects Physics chemistry biology mathematics literature civics general study geography angiculture history kiswahili commerce book keeping accounting computer economics form one form two form three form four form five and form five study notes

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