Fichas
reproduction
Fichas del conjunto (48)
- 1what is reproductionreproduction is the creation of a new living thing
- 2what is asexual reproduction and name pros and cons of it- it requires 1 parent organism
- the offspring is genetically identical to the parent and
- pros: extremely efficient
- cons: If the parent has genetic defects the offspring will also be "weak" - 3what is sexual reproduction and name pros and cons of itit requiers 2 parent organisms and the offspring is genetically unique form the parent
pros: produces genetically different babies increasing survival rates
cons: requires time and effort - 4name the two types of asexual reproductionbinary fission and budding
- 5what is buddinga type of asexual reproduction in which a new individual develops for an outgrowth on the body of a plant
- 6what is binary fissionit is when a fully grown parent cell splits into two to create two new cells
- 7name the two types of sexual reproductionexternal and internal
- 8what is external fertilizationexternal fertilization is the the male and female gametes are released in to the open and then brought together by a curent to create a zygote and then a new organism
- 9what is internal fertilizationit is when the male and the female joins their cloacas and the male releases semen into the female's cloaca and the spermatozoa travel up to reach te ova
- 10label this diagram
- 11where is pollen producedthe anther
- 12what are bisexual flowersflowers that contain both female and male reproductive parts
- 13explain pollinationpollen is transferred from the anther to the stigma then the male gametes pass thought a pollen tube through the style to the ovule where one of the male gametes fuses with one of the female gametes creating a zygote then the ovule turn into the seed of a fuite
- 14what is self pollinationif the transfer of pollen from the anther to the stigma takes place in the same flower
- 15what is cross pollinationwhat the transfer of pollen from the anther to the stigma is from the anther of one flower to the stigma of another
- 16how can cross pollination be donewith wind, water, insects or animals
- 17label this diagram
- 18explain the function of the epididymisit is used for sperm storage
- 19what is the function of the vas deferenstube that carries the sperm out of the epididymis
- 20what are seminal vehicles and prostate glandsthey produce a rich milky fluid in which the sperm swim in
- 21what is semena mixture of sperm and star rich fluids
- 22what is the urethraa tube from the balder to the end of the penis in which both semen and urine pass through
- 23label tis diagram
- 24what are ovariestwo organ inside a women's body in which eggs are stored and mature
- 25what is ovumanother name for egg
plural is ova - 26what is ovulationthe process of when an ovary releases 1 ovum every 28 days
- 27what are folliclesfluid willed cavities insides the ovary which contains 1 egg each
- 28what is Corpus Luteumthe empty follicle after the egg has been released
- 29what is an oviduct of a fallopian tubetiny tubes which move egg toward the uterus ifs perm are present they fertilize the egg in the oviduct
- 30what is the uterusa hollow pair-shaped organ which thick muscular walls
- 31what is the cervixthe lower entrance to the uterus
- 32what is the vagina of birth canala muscular passageway
- 33what is the urethrathe tube which carries urine from the bladder out of the body
in women it is separate from the vagina - 34what is a menstrual cyclea one-mounth cycle of changes that surrounds ovulation
- 35explain each step of the menstrual cycleevery month the body produces an ovum to be fertilized
during ovulation the lining of the uterus thickens and your body temperature increases
if fertilization does not occur then the body releases the ovum along with the celles that lined the uterus - 36where are female gametes formedin the ovary
- 37where are the male gametes formedin the testes
- 38what is fertilizationfertilization is when one sperm fuses which the ovum and creates a zygote
- 39where does the ovum get fertilizedin the fallopian tube
- 40what happens after fertilizationthe zygote moves from the fallopian tube and into the uterus and becomes an embryo by the 8th week the embryo becomes the fetus
- 41how many trimesters are there in pregnancy3
- 42what happens in the 1st trimesterit is weeks 1-13
week 4: brain heart limbs eyes and spinal chord id being formed
week 8: the first bone cells are made
week 12: the liver brain and heart are forming - 43what happens in the second trimesterweeks 14-26
Week 16: the skeleton is forming and most organ are present but not fully developed
week 20: hair and teeth starts to grow
week 24: he has lungs but its can't breath on it's own and it has fingerprints - 44what happens in the third trimesterweeks 27-40
week 28: bones harden immune system develops and fetus can open its eyes
Week 32: the lungs and brain continue to develop
week 36: it can hear its others voice and it's hair and nails continue to grow - 45what can prevent pregnancy and STIscondoms
the pill
the sponge - 46what does STI stand forsexually transmitted decease
- 47name the female and male sex hormones and where they are producedmale: testosterone produced in the testes
female: estrogen produced in the ovary - 48what is FSH and where is it produced and what does this hormone doFollicle Stimulating Hormone is produced in the pituitary gland and it is a property hormone
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- Descripción
- grade 7 science Fichas sobre reproduction, creado por Ella Ivanovici el 25/05/2017.
- Creado por
- Ella Ivanovici
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