Question 1

Where does digestion begin?

Accepted Answer

mouth

Answer

small intestine

Answer

stomach

Answer

large intestine

Question 2

What role does saliva play in digestion

Accepted Answer

It helps break down food

Answer

It moves food through intestine

Answer

Saliva does not help with digestion.

Answer

It coats your stomach with protective lining.

Question 3

In which part of the small intestine do most digestion take place?

Accepted Answer

duodenum

Answer

pancreas

Answer

heart

Answer

liver

Question 4

What organs produce enzymes that help in digestion?

Accepted Answer

pancreas and liver

Answer

heart and kidneys

Answer

eyes and ears

Answer

nose and ears

Question 5

What is the baglike muscular organ that mixes and chemically changes protein?

Accepted Answer

stomach

Answer

small intestine

Answer

liver

Answer

large intestine

Question 6

The following statement differentiates mitosis from meiosis EXCEPT:

Accepted Answer

Mitosis is a reduction division, while meiosis is a duplication division.

Answer

Mitosis produces diploid cells, while meiosis produces haploid cells

Answer

Mitosis produces 2 daughter cells, while meiosis produces 4 daughter cells.

Answer

Mitosis occurs in body cells, while meiosis occurs in reproductive cells.

Question 7

Which of the following statements accurately describes the process of gametogenesis?

Accepted Answer

Gametogenesis always results in haploid cells.

Answer

Gametogenesis always starts with haploid cells.

Answer

Gametogenesis occurs only in plants.

Answer

Gametogenesis is not necessary for mammals.

Question 8

Which of the following statements is TRUE about oogenesis ?

Accepted Answer

It produces one haploid ovum.

Answer

It produces four diploid ova.

Answer

It produces four haploid ova

Answer

It produces one diploid ovum.

Question 9

Which of the following events take place during telophase of mitosis and telophase II of meiosis?

Accepted Answer

Reformation of the nuclear membrane

Answer

Alignment of chromosomes at the equatorial plate.

Answer

Movement of daughter chromosomes toward the poles.

Answer

Shortening of the spindle fiber.

Question 10

What process in Meiosis I is being shown by this illustration ?

Accepted Answer

tetrad

Answer

synapsis

Answer

homologous chromosomes

Answer

crossing over

Question 11

What does the notation ii (constricted pod shape) mean to geneticists?

Accepted Answer

two recessive alleles

Answer

at least one recessive allele

Answer

two dominant alleles

Answer

one dominant allele and one recessive allele

Question 12

Which of the following best describes the law of Independent assortment?

Accepted Answer

Genes controlling different characteristics are inherited independently of each other.

Answer

There are two genes that control inheritance.

Answer

There are dominant and recessive genes.

Answer

Two genes of the same characteristic separate into different gametes

Question 13

By just looking at a Mayana plant will give information concerning its

Accepted Answer

phenotype.

Answer

heterozygous alleles.

Answer

genotype.

Answer

recessive alleles.

Question 14

How will you describe the allele of an Rr pea plant if R represents a gene for round seed and r for wrinkled seed?

Accepted Answer

a heterozygous genotype

Answer

a homozygous phenotype

Answer

a homozygous genotype

Answer

a heterozygous phenotype .

Question 15

If green pea with heterozygous axial flower (Aa) is crossed with a terminal flower (aa),what is the probability that an offspring will have an axial flower?

Accepted Answer

50 %

Answer

75 %

Answer

100 %

Answer

25 %

Question 16

Which of the following is the least level of classification?

Accepted Answer

species

Answer

order

Answer

genus

Answer

class

Question 17

Which kingdom includes autotrophic and heterotrophic unicellular and multi-cellular organisms?

Accepted Answer

protista

Answer

plantae

Answer

fungi

Answer

animalia

Question 18

Which characteristic were the plants and animals have in common?

Accepted Answer

both are eukaryotic

Answer

both are autotrophic

Answer

both are prokaryotic

Answer

both are heterotrophic

Question 19

Which of the following refers to the abundance of species living in a given area?

Accepted Answer

Species diversity

Answer

Ecosystem diversity

Answer

Population diversity

Answer

Genetic diversity

Question 20

Which of the following is the correct sequence from the least to the most comprehensive of the taxonomic levels?

Accepted Answer

Species, Genus, Family, Order, Class, Phylum, and Kingdom

Answer

Family, Phylum, Class, Kingdom, Order, Species, and Genus

Answer

Species, Genus, Family, Class, Order, Phylum, and Kingdom

Answer

Phylum, Kingdom, Order, Class, Species,Family, and Genus

Question 21

Which of the following describes an ecosystem with high biodiversity?

Accepted Answer

An ecosystem having a lot of variety of different organisms.

Answer

An ecosystem has a lot of the same organism.

Answer

An ecosystem having a few of the same organism.

Answer

An ecosystem only having one of each organism

Question 22

Which of the following does NOT refer to biodiversity?

Accepted Answer

Biodiversity is solely dependent on humans.

Answer

Biodiversity gives continuity to the cycle of life in the wild.

Answer

Biodiversity allows the balance of nature.

Answer

Biodiversity is the variety of living things in the world.

Question 23

When we can say that biodiversity has richness and evenness?

Accepted Answer

When it has many species in the area and has a balanced number of organisms.

Answer

When it is rich in a variety of organism.

Answer

When it is sustainable.

Answer

When it has a variety of species of organisms but there is the dominant population in the area.

Question 24

What do you think will happen when the life processes of species in the ecosystem is disrupted?

Accepted Answer

It becomes low in biodiversity and lesser interaction will happen.

Answer

It becomes high in biodiversity.

Answer

It becomes sustainable.

Answer

It becomes stable.

Question 25

Which of the following refers to the measure of biodiversity in the ecosystem?

Accepted Answer

It is measured in terms of richness and evenness of organisms in the ecosystem.

Answer

It is measured in terms of the kind of species in the ecosystem.

Answer

It is measured in terms of richness.

Answer

It is measured in terms of the kind of interaction among the organisms.

Question 26

Producers are organisms that use energy from the sun and convert it to more complex molecules to support life. Which of the following is NOT a producer?

Accepted Answer

Crustaceans living in freshwater .

Answer

Crops planted in farms .

Answer

Algae ina pond.

Answer

Phytoplankton found in sea.

Question 27

Frogs, lemurs, monkeys, and snakes are secondary consumers. Which of the following statements does NOT describe secondary consumers?

Accepted Answer

They are plant eaters.

Answer

They eat primary consumers for energy.

Answer

They are eaten by a larger organism or predator.

Answer

They are usually carnivores but can also be omnivores.

Question 28

Decomposers break down organic material such as the remains of dead organisms. Which of the following organisms is NOT a decomposer?

Accepted Answer

Grass

Answer

Fungi

Answer

Bacteria

Answer

Worm

Question 29

Which term refers to a diagram that shows the transfer of energy in the form of food from an organism to another in one line?

Accepted Answer

Food Chain

Answer

Food Line

Answer

Food Web

Answer

Food Court

Question 30

Which of the following statements is NOT true about the food web?

Accepted Answer

Grasshopper, deer, and rabbit are herbivores

Answer

Insect eating bird and snake are primary consumers.

Answer

Hawk and mountain lion are high-level consumers.

Answer

Bacteria are the decomposers present

Question 31

Plants are autotrophs. What is the other name for autotrophs?

Accepted Answer

Producers

Answer

Consumers

Answer

Carnivores

Answer

Heterotrophs

Question 32

Which of the following statements best describe an ecosystem?

Accepted Answer

It is the highest level of complexity that includes all non-living things.

Answer

A. It consists of biotic and abiotic factors

Answer

It is a portion on earth where all living things exist. D.

Answer

These are all members of particular species

Question 33

Nitrogen is an essential macronutrient and is a key component of amino acids. Which of the following is NOT a main function of nitrogen?

Accepted Answer

It is a major component of chlorophyll

Answer

It is the building block of plant proteins.

Answer

It is the building block of enzymes that facilitates digestion.

Answer

It is used to transfer substances from the cell to the cell's environment.

Question 34

Which of the following can be considered as detritivore?

Accepted Answer

earthworms

Answer

ants

Answer

planta

Answer

snakes

Question 35

Which organism is vital in nitrogen cycle as it converts nitrogen gas to a consumable matter for plants?

Accepted Answer

Nitrogen-fixing bacteria

Answer

Producers

Answer

Carbon-fixing bacteria

Answer

Heterotrophs

Question 36

Planting more trees gives us oxygen to breathe. Which of the following does it also improve?

Accepted Answer

quality of air

Answer

improve the way of living

Answer

quality of water

Answer

improve the construction of materials

Question 37

Dissolved oxygen in ocean water because of decomposed algae can result to_______________.

Accepted Answer

eutrophication

Answer

deforestation

Answer

overexploitation B D. overpopulation

Answer

overpopulation

Question 38

Clean-up drive is good to the environment because it can lessen _____.

Accepted Answer

pollution

Answer

typhoon

Answer

deforestation

Answer

drought

Question 39

Which of the following human activities may disrupt ecological balance?

Accepted Answer

Both A and Bare correct

Answer

Unsanitary disposal of sewage and garbage.

Answer

Avoid burning dried leaves, trash, and other waste materials

Answer

Conversion of agricultural land into residential land.

Question 40

.Burning offossil fuel affects the environment the most through ___________.

Accepted Answer

All of the above

Answer

Utilizing technologies that do not degradethe environment.

Answer

Through careful and selective logging.

Answer

Utilizes the latest technologies to recover resources and improve human life.

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