Menstral cycle

Making babies

1. Put the following words into a sentence:

   The sperm goes into the ovum which gametes the zygote which begins fertilisation.

   1. Compare sperm cells and ova.

      Sperm cells are the male sex cells and ova is thy female sex cell

      explain how fraternal twins are conceived. 

      
      

    

Reproduction question

Q1

Q2

Seminal vesicle produces some of the liquid found in semen 

Ovary produces gametes

Scrotum keeps the slightly cooler than the rest of the body.

Testis produces some of the liquid found in the semen 

Prostate gland produces some of the liquid found in the semen 

Uterus where the baby develops 

Cervix the passageway between the vagina and the uterus 

Fallopian tube where the baby develops 

Q3

A )both produce sex cells neede for fertilization.

B) tubes which transport the sex cells.

C) both become sexually aroused and enlarge in size 

D) where the sperm cells come through 

Q4 

Because this can reduce the amount of sperm produced 

Q5 

To check if they have 

Male reproduction system

Sex cells

Male and female versions. Required for sexual reproduction"

Males - sperm

Female - eggs , ova

Sex cells contain half the number of chromosomes as a body cell has, so when 2 sex cells join together a complete set of genetic materiel is obtained.

In humans 23 chromosomes come from dad

23 chromosomes come from mum.

Sex of offspring is determined by the male

Female xx

Male xy

Reproduction

Q1 

Asexual reproduction occurs when you don't have sex

Sexual reproduction occurs when you have sex with the same species.

Q2

Drones 

Q3

It involves the offspring initially forming as a growth on the parent. When  the bud is capable of catching its own food it breaks away and becomes an dependant animal.

The adult, or parent, worm breaks up into several pieces, each of which develops into an adult worm over time. Each offspring is identical to the parent worm.

Q4

1. By what means do each of the following reproduce? 

   (a) Jellyfish

   Budding
   (b) Malaria parasites

   Fission
   (c) Streptococcus bacteria 

   Fission 

   
   

   Q5

   1. (a) Describe parthenogenesis

      In parthenogenesis, a female produces an egg that develops unfertilised by sperm. 

       (b) Does this process involve sexual or asexual

      No it produces asexually 

      Q7

      Outline what advantages parthenogenesis might offer honeybees when there is an abundance of food.

      
      

Seeing colour

Q1 Copy the table below and record the possible combinations of primary colours and the resulting secondary colours observed on the screen. 

Q2 Predict what will happen if you mix the three secondary colours in equal amounts. 

The colours will mix together and form white.

Q3 Was your prediction correct? If not, suggest why it was not correct. 

Yes,

Yes it was because the 3 main colours