Reproduction Flashcards
What does it mean by body cells are diploid?
each cell has two matching sets of chromosomes
What does it mena by gametes or sex cells are haploid?
Each cell has one set of chromosomes
What are the two sex cells called?
Sperm and egg
How many sets of chromosomes do gametes have?
1 set (haploid)
How many sets of chromosomes do all body cells have?
2 sets (diploid)
What are the female reproductive organs?
Ovary, oviduct, uterus, cervix, vagina
What is the function of an ovary in the female system?
Produces eggs which contain female nucleus
What is function of the oviduct?
Where fertilisation occurs
What is the function of the uterus?
Where the embryo develops
What is the function of the cervix?
Ring of muscle, remains contracted during pregnancy
What is the function of a vagina?
Sperm are deposited here
What are the male reproductive organs?
Urethra, penis, sperm duct, testicle
What is the function of a testicle?
Sperm produced here and the sperm contain the male nucleus
What isthe function of a sperm duct?
Sperm travel along this tube from the testis to the urethra
What is the function of the urethra?
Tube through which sperm/urine leaves the body
How is the sperm adapted?
The sperm has a tail to swim to the egg
How is the egg adapted?
The egg has a food store to provide energy for cell division/mitosis
What is the function of a stamen?
Consists of anther and filament ( male part of flower)
What is the function of a anther?
Produces pollen ( male gamete- contains male nucleus)
What is the function of a stigma?
Where pollen lands
What is the function of an ovary in plants?
Contains ovules ( female gamete- contains female nucleus)
What is the plant male gamete?
pollen
What is the female gamete of a plant?
ovule
Which two parts make up the male stamen?
Anther and filament
What is fertilisation?
When the nucleus from the male gamete and the nucleus from the female gamete fuse to form a zygote
In mammals where is the male nucleus found?
Sperm
In mammals where is the female nucleus found?
Egg
In mammals where does fertilisation occur?
Ovaduct
In plants where does fertilisation occur?
Ovary
Give the term used for the chromosome complement in a zygote produced by the flower
Diploid
What is a zygote
A fertilised egg
What is the function of penis
structure which provides the means of sperm entering the vagina during intercourse
