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WorksheetsMIX (LET)
Total questions: 83
Worksheet time: 42mins
One who specializes in all kind of fishes and their characteristic developing expertise in:
Ichthyology
Entomology
Branch of Science that deals with the study of the relationship between plants animals and other living things found in their habitats period.
Ecosystem
Ecology
Which of the following best describes the science of Ecology?
Living things
Life and environment
________ is to insects as toxicology is to _______.
Etymology : toxicity
Entomology : poisons
Which of the following is not a type of cell?
Sperm
Virus
Which of the following does not have eukaryocytes?
Bacteria
Fungi
What do you call the organism who only eats plants and algae?
Herbivore
Omnivore
In the energy pyramid, which organisms occupy the base?
Herbivores
Producers
What do you call the consumers that directly feed on producers and get the greater amount of energy?
Omnivores
Herbivores
At night plants conserve ____ and restrict _______ intake.
Water ; oxygen
Water ; carbon dioxide
Arthropods exhibit fast and coordinated movement because they possess:
An endoskeleton
Joint appendages
Plant cells differ from animal cells in that only plant cells possess:
Lysosomes
A cell wall
What functional group differentiates chitin from cellulose?
Carboxyl group
Amino group
Which of the following does not exist in carbohydrates?
Hydrogen
Nitrogen
Which of this is not a multicellular organism?
Human
Amoeba
Organisms that can manufacture their own food are called?
Autotrophs
Heterotrophs
Which of the following is not used in the manufacture of food by green plants?
Carbon dioxide
Oxygen
Commensalism is when:
Neither species affects the other
One species benefits while the other is unaffected
Living and feeding on leaves by the caterpillar is an example of:
Parasitic
Predatory
Which of the following statements is TRUE about parasites and their relationships with their host?
The host enjoys the benefits of a relationship in which the parasite is harmed or killed.
The parasites enjoy the benefits of a relationship in which the host is harmed or killed.
What relationship exists between frogs and fishes in a pond ecosystem?
Predation
Competition
An owl and a hawk both eat mice. Which of the following of these terms describes the relationship between a hawk and an owl.
Mutualism
Competition
Which of the organisms is cold-blooded with a dry scaly skin?
Frog
Lizard
Animals which live on land but return to the water to breed.
Reptiles
Amphibians
Bamboo is classified as:
Bush
GrassB
What type of body covering makes up a mammal?
Shell
Fur
Birds have shapes that influenced the building of aircrafts. What feature is most present in airplanes?
The present of hollow oblong body
The presence of wings
Butterflies and mosquitoes have mouth parts in the form of a long, narrow, coild tube called :
Mandibles
Proboscis
Which group of organisms cause red tide?
Algae
Dinoflagellates
The molecules that contain an organism's genetic make-up called:
Nucleic Acid
Genetic membrane
The part of a plant cell that stores water, sugar and minerals
Vacoules
Chloroplasts
Which among the following are duplicated during the process of mitosis?
Centrosomes
Chromosomes
Which of the following does not contribute to the variation of population?
Mitosis
Crossing over
Which of the following means development of egg without fertilization?
Parthenogenesis
Meiosis
Diploid cells have two copies of chromosomes. These two copies are called:
Chromatids
Homologous
Which among the following is the only method of contraception that has 100% success rate?
Withdrawal method
Abstinence
At present, a patient fights cancer either through surgery or by subjecting him or her to a drug treatment called:
Irradiation
Chemotherapy
If carbohydrates are hydrophilic organic compounds, lipids are ______ organic compounds.
Hydrophobic
Polypeptide
Which of the following is not a source of carbohydrates?
Sugar
Meat
Which of the following is an isomer of glucose?
Fructose
Maltose
Sugar and starches are called:
Carbohydrates
Minerals
The four most essential element needed by the human body:
Carbon, hydrogen, oxygen, phosphorus
Nitrogen, hydrogen, oxygen, carbon
Which of the following is a vitamin?
Niacin
Pepsin
The number of calories in a food indicates:
The amount of energy that can obtained by the food
The amount that can be digested from the food
The chemical process of getting energy from the food and using structure and function.
Respiration
Metabolism
According to the level of organization, which is at the highest level?
Ecosystem
Biosphere
The flow of water in our planet as it undergoes the process of evaporation, condensation, precipitation, infiltration, runoff and subsurface flow is called:
Rain cycle
Water cycle
It is a common observation that mushrooms thrive few days after lightning strikes. Which among the following biogeochemical cycles is involved in this process?
Nitrogen cycle
Carbon-oxygen cycle
Plants absorb dissolve nitrates from the soil and convert them into _______.
Urea
Free nitrogen
Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities?
Methane and carbon dioxide
Nitrous oxide and sulfur dioxide
Acid rain occurs when ______.
Phosphorus rich water in lakes evaporates to form phosphoric acid.
Sulfur released in burning fossil fuels combines with water in the atmosphere.
Which of the following sentences about greenhouse effect is INCORRECT?
Greenhouse gases trap heat and atmosphere which are returned to the earth's surface.
Greenhouse effect is due to gases that absorb the green region of light from the sun.
Which of the following group of gases contribute to the 'Green House Effect'?
Carbon tetrafluoride and Nitrous oxide
Carbon dioxide and Methane
Opening of cement plants requires getting a DENR clearance. Which of the clearances are required?
Air Pollution Clearance
Environmental Clearance (ECC)
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?
Stomata
Lenticels
Which part of the flower develops into the fruit?
Ovule
Ovary
In addition to ATP, what are the end products of glycolysis?
Carbon dioxide (CO2) and NADH
NADH and pyruvate
A plant growing on a shady side of a tall fence bends around the corner of the fence toward the sunlight. This illustrates;
Positive phototropism
Negative phototropism
What is the storage cell of plants?
Collenchyma
Parenchyma
Cell walls present in a plant cells are made up of which compound?
Lipids
Cellulose
Which of the following nutrients is incorrectly paired with each function in a plant?
Magnesium: constituent of chlorophyll
Iron: component of chlorophyll
We have energy responsible for life on Earth. The source of this energy is the:
Wind
Sun
Who is the Father of Genetics?
Charles Darwin
Gregor Mendel
Damage to DNA that is not repaired and then replicated can result in genetic disorders. This demonstrates:
Mutation
Pathology
Which of the following base pairs are complementary to each other in a molecule
Cytosine and guanine
Thymine and cytosine
Generally, identical organisms are known as:
Variants
Clones
What is the technology being used now in the surgery of the retina?
Laser
Optical ray
He coined the term "survival of the fittest".
Darwin
Spencer
He evolved Theory of Evolution in his book "Origin of Species".
Archimedes
Darwin
The origin of the modern man:
Tabon
Sapiens
Which of the following is a correct sequence from the oldest era to the latest?
Precambrian, Paleozoic, Mesozoic, Cenozoic
Paleozoic, Cenozoic, Precambrian, Mesozoic
The evolution of life forms on earth has been dependent on:
The rate of change occurring in different earth environments.
The typical and chemical evolution of the earth.
Which of the following sets the condition under survival occurs?
Random change
The environment
What wave patterns of the EGG are active in an awake person?
I. Alpha wave
II. Beta wave
III. Delta wave
IV. Theta wave
I and II
I and IV
Which system defends the body against infectious diseases?
Lymphatic system
Immune system
The liquid portion of the blood is the:
Plasma
Hemoglobin
Which of the following blood types is regarded as a universal donor?
O
AB
Blood types AB and O can safely be given to a person with blood type:
A and B
AB and O
On an average how many litres of blood a human body have?
2-3 litres
5-6 litres
White blood cells, the skin and the antibodies are similar because they:
Supply oxygen to the body
Protect the body against certain harmful organisms
Which structure closes the opening in the larynx while we are swallowing?
Pharynx
Epiglottis
Myopia is connected with:
Ears
Eyes
Bile is produced by the:
Liver
Gallbladder
