1.1.6 Reproduction & Growth Flashcards
Reproduction is the process that leads to the what?
production of more of the same kind of organism
Reproduction is fundamental to the survival of what?
of a population and ultimately, the species
There are different types of reproduction what are they?
sexual and asexual
In sexual reproduction, the male and female what? fuse together
the male and female gametes fuse together
In humans, the male gamete is the what? and the female gamete is the what?
The male is the sperm, and the female is the egg
In plants, the male gamete is in the what? and the female gamete is the ovule
In plants, the male gamete is in the pollen grains, and in the female is the ovule
The DNA of the offspring is composed of both what? and what? DNA
The DNA of the offspring is composed of both maternal (mother) and paternal (father) DNA
How many chromosomes does the egg (ovum) contain
23 Chromosomes (50%)
How many chromosomes does the sperm contain
23 Chromosomes (50%)
What is a Zygote?
A fertilized egg.
How many chromosomes does a Zygote have?
46 Chromosomes (100%)
How many chromosomes does an Embryo have?
46 Chromosomes (100%)
What is an Embryo?
An embryo is the early stage of development of a multicellular organism
Sexual reproduction involves the fusing of what?
Sexual reproduction involves the fusing of two gametes to form a zygote that contains DNA from both parents
Cells or whole organisms can also reproduce using asexual what?
asexual reproduction
Give an example of Asexual Reproduction?
Mitosis is an example of asexual reproduction
There is only one parent involved so an exact what? is produced
An exact clone
The DNA of offspring is what? to parental DNA
Identical to parental DNA
Plants can reproduce asexually through what?
through tubers, budding or runners
Single-celled organisms such as what? can reproduce asexually
bacteria or amoeba
Define Growth
permanent increase in size
In animals, an individual grows larger between the
zygote and adult stage with changes in proportion or shape
In plants, an individual grows what? throughout their what? with new what?
In plants, an individual grows larger throughout their whole life with new shoots, leaves, branches etc forming year after year
