Modes of Reproduction (8.3) - Science 7 Unit 8: Reproduction and Genetics

Flashcards cover sexual vs asexual reproduction, meiosis, genetic diversity, advantages/disadvantages, and related examples from the lesson.

What defines sexual reproduction?

There is fusion of genetic materials from two parents.

What is a key characteristic of asexual reproduction?

It involves only one parent.

How does genetic diversity affect a species' survival in changing environments?

It increases survival chances.

Why might asexual reproduction be more suitable for species in stable environments?

It requires less time and resources.

What is a key outcome of sexual reproduction in plants like mango trees?

Increased genetic diversity due to pollination and mating.

How might asexual reproduction benefit organisms in an unchanging environment?

By allowing rapid population growth.

What is a disadvantage of sexual reproduction in terms of energy and resources?

It demands significant energy and resources.

Which reproductive method would be more vulnerable to widespread diseases?

Asexually reproducing species.

In an unstable ecosystem, which reproduction strategy might offer better survival prospects?

Genetic diversity through sexual reproduction.

What would be a major concern in using asexual reproduction for agricultural crops?

Vulnerability to disease due to lack of genetic diversity.

What is meiosis?

A two-step division that halves the chromosome number and shuffles them to create genetic diversity.

What are gametes in humans?

Sperm and eggs; haploid reproductive cells.

What is fertilization?

Fusion of sperm and egg to form a zygote.

Name common methods of asexual reproduction.

Budding, fragmentation, and regeneration.

What did the potato warm-up activity demonstrate about reproduction?

A piece of potato can sprout and grow into a new plant, illustrating asexual reproduction.