A detailed account of what happens after fertilisation is given below: Describe the male and female reproductive systems. State three characteristics that ensure cross-pollination takes place in flowering plants. Asexual reproduction: A type of reproduction where a single parent is divided by itself and reproduce its offspring. Feathery stigmas with a large sticky surface so they are more likely to catch pollen from the air. Others have fruits with hooks or spines that stick on animal fur or on clothes. There are two methods used namely Artificial family planning methods and Natural family planning menthods. Download document ( 100.00 KES ) Price : 100.00 KES: Size : 3.44 MB: This document contains Notes on the Following Topics and Subtopics in Form Three. In animal cells they attach to the centrioles at both poles. 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 in maize flower. Reproduction can take place by the participation of a single parent or two parents. This is due to the breakdown of the endometrium which occurs when the level of progesterone falls and the girl starts to menstruate. As in mitosis the cell prepares for division. The nucleus first divides into two and then the cytoplasm separates into two portions. Fertilisation: i. Fertilisation happens when male and female sex cells are physically joined together. Vertical hyphae are called sporangiophore. 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. Biology Form 1 Notes Classification is putting organisms into groups. Division of cell organelles such as mitochondria, ribosomes and centrioles. Other organisms, which reproduce by sporulation, are ferns and mosses. The centromeres of the homologous pairs migrate towards the opposite poles where they are attracted. Sexual reproduction involves the fusion of male and female gametes to form a zygote. A complete flower has all the four floral parts. After ovulation progesterone hormone is produced. It becomes embedded in the wall of the uterus a process called implantation. A piece of moist bread is placed on a petri-dish or enclosed in a plastic bag and observe daily for four days. It may occur any time during the life time of a male, Strong alcohol consumption and use of drugs, Impotence causes failure in performing the social act, thus one cannot have children, May cause psychological disturbances to the person, If an impotent person in married, impotence may lead to the break of that marriage, Fear, anxiety and sometimes is the first time to have sexual intercourse, Psychological factors may also lead to a problem, The person (male) fails to satisfy a woman, May lead to the breakage of marriage when a woman finds another male for sexual satisfaction, May cause psychological disturbances in the man’s mind, May cause psychological effects to the person who suffering from this problem, May be caused by swelling of the prostate gland, Inflammation may lead to sterility (infertility), May cause psychological problems to the person, May cause severe pain during sexual intercourse as one/man wants to ejaculate but sperms fail to pass through urethra, May cause someone to stay away not conducting sexual intercourse, If the causes of impotence are psychological, counseling may help to cure it, If the cause is biological, one has to attend hospital for medical check up, Counseling is the most effective way to be adopted to treat the problem, Medical treatment may be applied to stop the problem, If a woman feels she has PID she should have to go to the hospital for the right treatment, Abstaining from many sexual partners so as to overcome more infections/problem, Counseling is the most effective way that may be used to help the patient regain their confidence, Patients may go to the hospital for further checks and treatment, How you get along with member of the same or opposite sex, It also includes genital and reproductive processes such as intercourse and child bearing, Start at infantry when children shown their own bodies, Also sexuality is shown at early age (play age), Children also do and learn from their fellow children on different sexual matters, Social pressure (tradition of being independent), Drug addiction – it can stimulate or depress the sexual practice, Becoming pregnant at a tender age, thus losing the opportunity of being officially married or continuing with studies. Detach a frond from the plant and observe the under-side using a hand lens to see the raised brown patches - the sori. 1. crotalaria, hibiscus/Ipomea, Solanum, incunum. It brings about new gene combinations that lead to genetic variation in the offsprings. A soft copy of secondary school biology notes form 3. Fertilisation occurs in the upper part of the oviduct. No nectar produced because they is no need to attract pollinators to the flower. Sister chromatids separate from each other. Human Reproduction Class 12 Biology MCQs Pdf. Watch Queue Queue In plants cells, it is due to deposition of cellulose along the equator of the cell. b. Reproduction is a biological process that occurs in all living organisms. Prophase, Metaphase, Anaphase and Telophase. Luteinising hormone (L.H) causes the mature ovum to be released from the Graafian follicle - a process called ovulation. tomatoes and guavas. Fewer eggs are produced because there are higher chances of fertilisation since sperms are released into the female body. Usually scented; therefore they attract insects to the flower. Is a tube that opens to the outside and it acts as the copulatory and birth canal through the vulva. The stem-like part is the pedicel and receptacle, while modified leaves form corolla and calyx. On this page you can read or download klb form 3 biology notes in PDF format. The inner lining endometrium supplies nutrients to embryo. Describe how insect pollinated flowers are adapted to pollination 2m 0s; 2. After releasing the ovum, the Graafian follicle changes into a yellow body called corpus luteum. The pericarp and seed coat are waterproof. 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. Classification is based on the study of external characteristics of organisms. Chromatids separate and migrate to the opposite poles due to the shortening of spindle fibres. Fallopian tube: It is also known as egg tube/oviduct, it is a funnel shaped opening. Vas deferens (sperm duct) is the tube through which sperms are carried from testis to urethra. There are two types of reproduction: sexual and asexual reproduction. 1 male gamete fuses with the egg cell to produce a, 1 male gamete fuses with both the polar nuclei to produce the, The integuments surrounding the embryo sac become the tough and protective. BIOLOGY FORM 5 CHAPTER 4 - 4.1C Spermatogenesis & 0ogenesis 1. Concept of Reproduction; The concept of reproduction. If you don't see any interesting for you, use our search form on bottom ↓ . Spore formation in rhizopus. New offspring may carry undesirable qualities from parents. In the uterus the embryo develops villi which project into uterus for nourishment later the villi and endometrium develop into placenta. Placenta produces progesterone and oestrogen. This worksheet is obviously adaptable for different abilities. Closely observing what your child watches on television and in the movies or is exposed to in music and on the Internet. If you don't see any interesting for you, use our search form on bottom ↓ . Each chromosome is seen as a pair of chromatids. The triploid nucleus develops into an endosperm. Sexual reproduction produces offspring with novel combinations of genes. The centre of the nucleus is referred to as the equator. In humans gestation takes nine months (40 weeks). Other cell groups initiate the placenta and umbilical cord, which will bring in nutrients and eliminate waste. Q.11. This video is unavailable. REPRODUCTION -1 This is the process by which organism produce new individual of the same species. The embryo is implanted into the inner uterine wall- the endometrium which nourishes the embryo. E.g. The notes were prepared by fellow biology teachers and are inline with KNEC & KIE biology syllabus. Academic Partner. No indiscriminate spreading of individuals which can result in wastage of offspring. The Processes of Ovulation and Menstruation, Explain the processes of ovulation and menstruation, The Process of Fertilization Pregnancy and Child Birth, Explain the process of fertilization pregnancy and child birth, At the beginning of the cycle, the menstruation can take place between 3-5 or 7, Outline factors which may hinder fertilization. Lessons; The difference between sexual and asexual reproduction Lessons The following are Form 3 Topical Questions with Answers available for download free of charge. 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. Meiosis is the type of cell division, which occurs in the reproductive organs to produce sex cells known as gametes. The term interphase is used to describe the state of the nucleus when the cell is just about to divide. 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 … The animation below show examples of offsprings resulting from asexual reproduction. False fruits develops from other parts such as calyx, corolla and receptacle, e.g. The air bubbles make the seeds float on water and are carried away. 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 … Different stages of meiosis are observed. Only answers are offered at affordable fee for administrative reasons. Reproduction lessons form three Biology - acaproso. The dry ones can be divided into Dehiscent which split open to release seeds and indehiscent which do not open. Obtain wind dispersed fruit/seed e.g. TOPIC 1: CLASSIFICATION OF LIVING THINGS, TOPIC 2: MOVEMENT. Fertilisation that happens inside a female’s body is called the … Form 3 Biology video questions and answers on reproduction in plants. Development of circulating and digestive systems. (1m)9 (b) What is the name the proteins in the above excerpt. On this page you can read or download k l b biology form 3 reproduction in PDF format. Based on the SPM Form 5 Biology syllabus. Fertilisation is preceded by copulation in which the erect penis is inserted into the vagina. Parents and teachers strictly supervising teenagers at home and school, respectively. Important genetic changes usually result. The stigma matures earlier and dries before the anthers release the pollen grains. There are two types of reproduction: sexual and asexual Sexual reproduction involves the fusion of male and female gametes to form a zygote. Maternal blood and foetal blood do not mix. It is very important that a couple gets only a number of children they can afford and care for. BIOLOGY FORM THREE OTHER TOPICS TOPIC 1: CLASSIFICATION OF LIVING THINGS, TOPIC 2: MOVEMENT TOPIC 3: COORDINATION TOPIC 4: EXCRETION TOPIC 5: REGULATION TOPIC 6: REPRODUCTION. 0m 40s; 3. The male is unable to produce enough sperm for successful fertilization. Two sexually mature adults to place specialised cells together, and so mix and merge there genetic material to produce a new and unique individual. BIOLOGY FORM 5 NOTES CHAPTER 4 : REPRODUCTION AND GROWTH 4.1 GAMETE FORMATION. Download k l b biology form 3 reproduction document. Sexual Reproduction in animals and types of fertilisation. 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