2nd Trimester Benchmark Review (part 1)

1. In sexual reproduction, the joining of two sex cells, a sperm and an egg, is called

Fertilization

Ovulation

Menstruation

Cell division

2. Which of the following are examples of asexual reproduction?

Humans

Flatworm

Cheetahs

Rabbits

3. In order for an organism to survive and evolve, if there is a changing environment, it is most likely to survive if

It can blend in with its surroundings

It doesn't have many predators

It has good characteristics and adaptations that help it survive

It doesn't reproduce

4. What happens when a population squirrels becomes geographically isolated from another group of squirrels?

They become genetically different from each other and develop into new species

They might have different predators

They might eat different foods

The climates they live in might be different

5. What is the difference between sexual reproduction and asexual reproduction?

Asexual reproduction is the division of one body cell, sexual reproduction is the division of a sex cell.

Asexual reproduction joins two body cells, sexual reproduction joins two body cells also

Asexual reproduction divides sex cells, sexual reproduction does not

Asexual reproduction is one organism reproducing, sexual reproduction is the joining of two sex cells

6. In order for natural selection to happen within a group of organisms, what must be present?

A lot of dominant traits

A lot of recessive traits

Genetic variation

Different climates

7. If a group of organisms were all very genetically similar, would they be more likely to become extinct than if they had a lot of genetic variation?

No, because their similar genes would help them survive

No, because they might have good adaptations

Yes, their adaptations would help them survive.

8. If an organism does not have good adaptations, will it be likely to survive and reproduce?

Yes, it will pass on its dominant traits

No, it will pass on its recessive traits

No, it will not have many offspring that can survive, because it did not pass on good adaptations.

Yes, most of its offspring will survive because its random

9. Darwin's theory was that evolution is more likely to take place when

There are a lot of offspring

The environment changes and only some of the species survive

There is not a lot of offspring

There are mass extinctions.

10. The genetic differences in offspring are by

Natural selection

Random

Menstruation

Fertilization

2nd Trimester Benchmark Review (Part 1)