what happens during reproduction ? - 1. During sexual intercourse, millions of sperm are released into the vagina 2. The sperm travel from the vagina to the oviduct 3. Fertilisation occurs in the oviduct 4. Fertilisation occurs when the nucleus of the sperm cell fuses with the nucleus of the egg cell 5. After fertilisation occurs, a zygote is produced , why is reproduction required ? - to carry on a species, what’s the term used to describe the young of an organism ? - offspring, What is an example of a parental care strategy used by an animal, highlight an advantage and disadvantage - prey, stay close to mum, at risk of predation, differentiate between biological sex and gender - biological sex is the gender your born with, gender is when e.g you are born a biological female but you identify as a male, identify the different parts of the male reproductive system - arrow 1, sperm duct arrow 2, penis arrow 3, testes arrow 4, urethra, point to where the oviduct, ovary, uterus and vagina are, what are the functions of the testes, sperm duct, urethra and penis ? - testes = where sperm is made sperm duct = Carrie’s sperm from the testes to the urethra penis, deposits sperm into the vagina during reproduction , what are the functions of the oviduct, uterus, ovary and vagina ? - oviduct, the tube that carries the egg from the ovary to the uterus, also the site of fertilisation uterus, where the foetus develops ovary, where the eggs are produced vagina, receives sperm during reproduction , state the function of the reproductive system - tbc, is this a biological male or female ? - female, is this a biological male or female ? - male, describe the process of fertilisation - the nucleus of the sperm cell fuses with the nucleus of the egg cells and produces a zygote, name of the cell produced in fertilisation - zygote, suggest an example of assisted fertilisation - IVF, egg and sperm are artificially joined out of the body, differentiate between internal and external fertilisation - internal, fertilisation takes place internally, where the egg and the sperm meet inside the body external, fertilisation takes place externally, where the sperm and egg meet outside the body, name examples of animals that use internal fertilisation - black rat snake, gorilla, grey wolf, name types of animals that use external fertilisation - bullfrog, cod, describe the process of implantation - tbc, identify the placenta, umbilical cord and amniotic sack, state the term used to describe the duration of pregnancy - gestation , how many sets of chromosomes do body cells have ? - 2, how many sets of chromosomes do sex cells have ? - 1, where are sperm cells made ? - testes, what’s the biological term for a sex cell ? - gamete, where are egg cells made ? - ovary, what is the size of a sperm cell - one of the smallest cells in the body with one set of chromosomes , what’s the size of an egg cell ? - one of the largest cells in the body with two sets of chromosomes, special features of an egg - cytoplasm contains nutrients of growth of the early embryo, special features of sperm - the middle piece had lots of mitochondria to release energy for swimming , how many sets of chromosomes gamete’s need and why - gametes need to have just 1 set of chromosomes so they can produce a fertilised egg that contains 2 sets of chromosomes, where does fertilisation occur ? - oviduct, what is surrogacy ? - a women who carries a baby for a couple who cannot have a baby for themselves , what does offspring require to develop from a fertilised egg ( zygote ) to a fully formed baby? - nutrients, what is the placenta attached to ? - uterus, what does amniotic fluid do ? - protects the foetus during development , what does the umbilical cord do ? - allows nutrients to be passed between the mother and foetus, what are non-identical twins called ? - dizygotic , 5 things about non-identical ( dizygotic ) twins ? - 1. Formed from 2 different zygotes 3. 2 different egg cells 4. 50% DNA 5. Each twin has a separate placenta, what are identical twins called ? - monozygotic , 3 things about identical ( monozygotic ) twins - 1. Formed from one zygote 2. Share all of their DNA ( created when one sperm cell fertilises one egg cell 3. Both twins have 1 placenta, when does the baby flip upside down ? - 2 weeks before birth, what is it called when the baby flip upside down ? - the head is said to be ‘engaged’, what happens during birth ? - 1. Muscles of the uterus start to contract 2. This is known as the start of labour 3. Contractions become more powerful 4. Cervix starts to dialate ( open ), ready for the baby to come out 6. When the cervix is fully dialated ( 10 cm ) the mother gets an uncontrollable urge to push 7. Anmiotic sac that held the baby pops 8. Muscles in the wall of the uterus push the baby through the cervix out the vagina 9. The umbilical cord is cut, leaving a ‘bellybutton’ ( navel ), what is gestation ? - the length of the time an animal is pregnant for, how long is human gestation ? - approx: 270 days from fertilisation until birth , What is the gestation of other animals ? - It varies but usually is linked to the size of the animal, unborn baby from 8 weeks of development - fetus, ring of muscle at the entrance of the uterus - cervix, organ through which substances pass between the mother and foetus - placenta, name of the ball of cells formed after the zygote divides - embryo, process of the nucleus of a sperm cell joining with the nucleus of an egg cell - fertilisation , process of an embryo attaching to the lining of the uterus - implantation, semen being released from the penis - ejaculation, release of egg from the ovary - ovulation, where a baby develops until birth - uterus, carries urine or sperm out of the body - urethra, connects fetus to the placenta - umbilical cord, reproductive cell - gamete, cell containing male genetic material - sperm, where fertilisation occurs - oviduct,

biology

by
Print
Embed

Leaderboard

Flash cards is an open-ended template. It does not generate scores for a leaderboard.

Visual style

Options

Switch template

Continue editing: ?