Reproduction Basics
What type of reproduction involves only one parent?
Asexual reproduction
Do r-strategists produce many or few offspring?
Many
Which organ produces sperm?
Testes
What is one factor that can affect survival of a species?
Predators / disease / climate / habitat loss
What is the basic unit of life?
Cell
What type of reproduction produces genetically different offspring?
Sexual reproduction
Do K-strategists provide high or low parental care?
High
Which organ produces eggs?
Ovaries
Why might an r-strategist survive better in a dangerous environment?
They produce many offspring so some survive
What do we call a group of the same species living in one area?
Population
What is one key advantage of asexual reproduction?
Fast reproduction/no need for a mate
Which strategy is most common in insects and bacteria?
r-strategy
Where does fertilisation usually occur?
Fallopian tube
Why might sexual reproduction be better when environments change?
It creates variation, helping adaptation
Which type of reproduction do bacteria use?
Asexual reproduction
What is one key advantage of sexual reproduction?
Genetic variation
Why do K-strategists have fewer offspring?
They invest more time and energy into each offspring
What is the function of the uterus?
Where the embryo develops
What happens to a population if survival rates decrease over time?
The population declines
What is a mutation?
A change in DNA
Why is genetic variation important for survival?
It allows organisms to adapt to environmental changes (e.g. disease, climate)
Which strategy is better in a stable environment and why?
K-strategy, because offspring are more likely to survive due to high care
Name one hormone involved in human reproduction.
Testosterone / Oestrogen / Progesterone
Explain how reproduction and survival are linked.
Reproduction ensures offspring are produced, allowing the species to continue
What is one example of a K-strategist animal?
Humans / elephants / kangaroos