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MIX (LET)

Total questions: 83

Worksheet time: 42mins

Name
Class
Date
1.

One who specializes in all kind of fishes and their characteristic developing expertise in:

a)

Ichthyology

b)

Entomology

2.

Branch of Science that deals with the study of the relationship between plants animals and other living things found in their habitats period.

a)

Ecosystem

b)

Ecology

3.

Which of the following best describes the science of Ecology?

a)

Living things

b)

Life and environment

4.

________ is to insects as toxicology is to _______.

a)

Etymology : toxicity

b)

Entomology : poisons

5.

Which of the following is not a type of cell?

a)

Sperm

b)

Virus

6.

Which of the following does not have eukaryocytes?

a)

Bacteria

b)

Fungi

7.

What do you call the organism who only eats plants and algae?

a)

Herbivore

b)

Omnivore

8.

In the energy pyramid, which organisms occupy the base?

a)

Herbivores

b)

Producers

9.

What do you call the consumers that directly feed on producers and get the greater amount of energy?

a)

Omnivores

b)

Herbivores

10.

At night plants conserve ____ and restrict _______ intake.

a)

Water ; oxygen

b)

Water ; carbon dioxide

11.

Arthropods exhibit fast and coordinated movement because they possess:

a)

An endoskeleton

b)

Joint appendages

12.

Plant cells differ from animal cells in that only plant cells possess:

a)

Lysosomes

b)

A cell wall

13.

What functional group differentiates chitin from cellulose?

a)

Carboxyl group

b)

Amino group

14.

Which of the following does not exist in carbohydrates?

a)

Hydrogen

b)

Nitrogen

15.

Which of this is not a multicellular organism?

a)

Human

b)

Amoeba

16.

Organisms that can manufacture their own food are called?

a)

Autotrophs

b)

Heterotrophs

17.

Which of the following is not used in the manufacture of food by green plants?

a)

Carbon dioxide

b)

Oxygen

18.

Commensalism is when:

a)

Neither species affects the other

b)

One species benefits while the other is unaffected

19.

Living and feeding on leaves by the caterpillar is an example of:

a)

Parasitic

b)

Predatory

20.

Which of the following statements is TRUE about parasites and their relationships with their host?

a)

The host enjoys the benefits of a relationship in which the parasite is harmed or killed.

b)

The parasites enjoy the benefits of a relationship in which the host is harmed or killed.

21.

What relationship exists between frogs and fishes in a pond ecosystem?

a)

Predation

b)

Competition

22.

An owl and a hawk both eat mice. Which of the following of these terms describes the relationship between a hawk and an owl.

a)

Mutualism

b)

Competition

23.

Which of the organisms is cold-blooded with a dry scaly skin?

a)

Frog

b)

Lizard

24.

Animals which live on land but return to the water to breed.

a)

Reptiles

b)

Amphibians

25.

Bamboo is classified as:

a)

Bush

b)

GrassB

26.

What type of body covering makes up a mammal?

a)

Shell

b)

Fur

27.

Birds have shapes that influenced the building of aircrafts. What feature is most present in airplanes?

a)

The present of hollow oblong body

b)

The presence of wings

28.

Butterflies and mosquitoes have mouth parts in the form of a long, narrow, coild tube called :

a)

Mandibles

b)

Proboscis

29.

Which group of organisms cause red tide?

a)

Algae

b)

Dinoflagellates

30.

The molecules that contain an organism's genetic make-up called:

a)

Nucleic Acid

b)

Genetic membrane

31.

The part of a plant cell that stores water, sugar and minerals

a)

Vacoules

b)

Chloroplasts

32.

Which among the following are duplicated during the process of mitosis?

a)

Centrosomes

b)

Chromosomes

33.

Which of the following does not contribute to the variation of population?

a)

Mitosis

b)

Crossing over

34.

Which of the following means development of egg without fertilization?

a)

Parthenogenesis

b)

Meiosis

35.

Diploid cells have two copies of chromosomes. These two copies are called:

a)

Chromatids

b)

Homologous

36.

Which among the following is the only method of contraception that has 100% success rate?

a)

Withdrawal method

b)

Abstinence

37.

At present, a patient fights cancer either through surgery or by subjecting him or her to a drug treatment called:

a)

Irradiation

b)

Chemotherapy

38.

If carbohydrates are hydrophilic organic compounds, lipids are ______ organic compounds.

a)

Hydrophobic

b)

Polypeptide

39.

Which of the following is not a source of carbohydrates?

a)

Sugar

b)

Meat

40.

Which of the following is an isomer of glucose?

a)

Fructose

b)

Maltose

41.

Sugar and starches are called:

a)

Carbohydrates

b)

Minerals

42.

The four most essential element needed by the human body:

a)

Carbon, hydrogen, oxygen, phosphorus

b)

Nitrogen, hydrogen, oxygen, carbon

43.

Which of the following is a vitamin?

a)

Niacin

b)

Pepsin

44.

The number of calories in a food indicates:

a)

The amount of energy that can obtained by the food

b)

The amount that can be digested from the food

45.

The chemical process of getting energy from the food and using structure and function.

a)

Respiration

b)

Metabolism

46.

According to the level of organization, which is at the highest level?

a)

Ecosystem

b)

Biosphere

47.

The flow of water in our planet as it undergoes the process of evaporation, condensation, precipitation, infiltration, runoff and subsurface flow is called:

a)

Rain cycle

b)

Water cycle

48.

It is a common observation that mushrooms thrive few days after lightning strikes. Which among the following biogeochemical cycles is involved in this process?

a)

Nitrogen cycle

b)

Carbon-oxygen cycle

49.

Plants absorb dissolve nitrates from the soil and convert them into _______.

a)

Urea

b)

Free nitrogen

50.

Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities?

a)

Methane and carbon dioxide

b)

Nitrous oxide and sulfur dioxide

51.

Acid rain occurs when ______.

a)

Phosphorus rich water in lakes evaporates to form phosphoric acid.

b)

Sulfur released in burning fossil fuels combines with water in the atmosphere.

52.

Which of the following sentences about greenhouse effect is INCORRECT?

a)

Greenhouse gases trap heat and atmosphere which are returned to the earth's surface.

b)

Greenhouse effect is due to gases that absorb the green region of light from the sun.

53.

Which of the following group of gases contribute to the 'Green House Effect'?

a)

Carbon tetrafluoride and Nitrous oxide

b)

Carbon dioxide and Methane

54.

Opening of cement plants requires getting a DENR clearance. Which of the clearances are required?

a)

Air Pollution Clearance

b)

Environmental Clearance (ECC)

55.

Plants need carbon dioxide, water, light and chlorophyll in order to make starch by photosynthesis. Carbon dioxide enters plants through holes in the leaves called?

a)

Stomata

b)

Lenticels

56.

Which part of the flower develops into the fruit?

a)

Ovule

b)

Ovary

57.

In addition to ATP, what are the end products of glycolysis?

a)

Carbon dioxide (CO2) and NADH

b)

NADH and pyruvate

58.

A plant growing on a shady side of a tall fence bends around the corner of the fence toward the sunlight. This illustrates;

a)

Positive phototropism

b)

Negative phototropism

59.

What is the storage cell of plants?

a)

Collenchyma

b)

Parenchyma

60.

Cell walls present in a plant cells are made up of which compound?

a)

Lipids

b)

Cellulose

61.

Which of the following nutrients is incorrectly paired with each function in a plant?

a)

Magnesium: constituent of chlorophyll

b)

Iron: component of chlorophyll

62.

We have energy responsible for life on Earth. The source of this energy is the:

a)

Wind

b)

Sun

63.

Who is the Father of Genetics?

a)

Charles Darwin

b)

Gregor Mendel

64.

Damage to DNA that is not repaired and then replicated can result in genetic disorders. This demonstrates:

a)

Mutation

b)

Pathology

65.

Which of the following base pairs are complementary to each other in a molecule

a)

Cytosine and guanine

b)

Thymine and cytosine

66.

Generally, identical organisms are known as:

a)

Variants

b)

Clones

67.

What is the technology being used now in the surgery of the retina?

a)

Laser

b)

Optical ray

68.

He coined the term "survival of the fittest".

a)

Darwin

b)

Spencer

69.

He evolved Theory of Evolution in his book "Origin of Species".

a)

Archimedes

b)

Darwin

70.

The origin of the modern man:

a)

Tabon

b)

Sapiens

71.

Which of the following is a correct sequence from the oldest era to the latest?

a)

Precambrian, Paleozoic, Mesozoic, Cenozoic

b)

Paleozoic, Cenozoic, Precambrian, Mesozoic

72.

The evolution of life forms on earth has been dependent on:

a)

The rate of change occurring in different earth environments.

b)

The typical and chemical evolution of the earth.

73.

Which of the following sets the condition under survival occurs?

a)

Random change

b)

The environment

74.

What wave patterns of the EGG are active in an awake person?


I. Alpha wave

II. Beta wave

III. Delta wave

IV. Theta wave

a)

I and II

b)

I and IV

75.

Which system defends the body against infectious diseases?

a)

Lymphatic system

b)

Immune system

76.

The liquid portion of the blood is the:

a)

Plasma

b)

Hemoglobin

77.

Which of the following blood types is regarded as a universal donor?

a)

O

b)

AB

78.

Blood types AB and O can safely be given to a person with blood type:

a)

A and B

b)

AB and O

79.

On an average how many litres of blood a human body have?

a)

2-3 litres

b)

5-6 litres

80.

White blood cells, the skin and the antibodies are similar because they:

a)

Supply oxygen to the body

b)

Protect the body against certain harmful organisms

81.

Which structure closes the opening in the larynx while we are swallowing?

a)

Pharynx

b)

Epiglottis

82.

Myopia is connected with:

a)

Ears

b)

Eyes

83.

Bile is produced by the:

a)

Liver

b)

Gallbladder