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Review Benchmark 3

Last updated 4 months ago

54 questions

Note from the author:

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This is a formative review for 8th grade science.

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Pine trees in a dense forest can grow taller than pine trees in an open meadow.

Pine trees in a dense forest compete for sunlight with the surrounding trees.

Pine trees in a dense forest are part of a less-complex food web than pine trees in an open meadow.

Pine trees in a dense forest have more living branches than pine trees in an open meadow.

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The male offspring receive the taits from the male parent, and the female offspring receive the traits from the female parent.

All the offspring will have the traits exhibited by the male parent.

Sexual reproduction does not change the genetic combinations of the offspring.

Sexual reproduction results in possible new combinations of genes in the offspring.

Hollow bones in birds

Bright, colorful feathers

Sweet-smelling, colorful flowers

Doing a complicated courtship dance

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SS, Ss

SS, ss

Ss, ss

Ss, Ss

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There is a change in the environment. An antibiotic is added. Some of the bacteria adapt to the new environment. They survive and reproduce.

In any population, variation exists. Some bacteria are resistant to antibiotics. Most bacteria die, but the bacteria that are resistant survive and reproduce.

Sexual reproduction of bacteria cause variation. Some bacteria survive antibiotics and some do not. Regardless, over time all of the bacteria should become extinct.

In a population of bacteria that are exposed to antibiotics, some bacteria are able to change their genetic make-up and survive. The new genotype is passed on to offspring. 

homologous

analogous

vestigial

non-relatable

How does meiosis contribute to the genetic variability in offspring?

It involves duplicating chromosomes.

It creates genetically identical offspring.

It produces gametes with genetic diversity.

It repairs damaged DNA.

How does natural selection affect populations over time?

It decreases all traits equally

It creates new species instantly

It eliminates all weak traits

It increases traits that enhance survival.

What did Gregor Mendel study to show heredity?

He focused on environmental changes

He studied pea plant traits and patterns.

He analyzed human genetics

He studied animal behavior

What are genes responsible for?

Genes are not passed to offspring

Genes influence only climate adaptation

Genes only affect physical appearance

Genes determine inherited traits of organisms.

Why do some organisms survive better in specific environments?

Only size matters for survival

All traits are equally beneficial

Genetic variations can enhance survival chances.

Survival is random and not genetic

What can affect an organism's growth?

Height is only because of environment

Both genetic and environmental factors play a role.

Growth depends on food alone

Only genetic factors matter

What occurs during meiosis?

Chromosomes double and stay the same

Homologous chromosomes segregate and recombine.

All DNA is lost during division

Cells divide without genetic change

How do traits become more common in a population?

New traits emerge every generation

Traits are randomly inherited without change

All traits disappear over time

Natural selection favors advantageous traits.

What did Mendel's experiments reveal about traits?

Traits can be dominant or recessive.

All traits are inherited equally

Traits come only from one parent

Traits are always blended together

What are chromosomes made of?

Chromosomes consist only of RNA

Chromosomes are made of DNA and proteins.

Chromosomes are liquids in cells

Chromosomes are made of carbohydrates

What explains the variation of traits in a population?

Genetic variations lead to differences in traits.

Trait variations occur solely from environmental factors.

Traits remain unchanged across generations.

Individuals in a population are genetically identical.

What is the result of successful natural selection?

All traits become perfectly suited

Elimination of all less favorable traits

Increased frequency of beneficial traits.

Creation of entirely new species

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