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A group of organisms all of the same kind of species.

• Community

• Population

• Ecosystem

• Biosphere

Answer explanation

CORRECT:

Population

It is a group of individuals of the same species within a community.

INCORRECT:

Community

It is a group of  interacting species living in the same location/area.

Ecosystem

The complex of living organisms, all their interrelationships in

a particular unit of space and their environment.

Biosphere -The biosphere is defined as the region on, above, and below the

Earth's surface where life exists such as biotic factors.EC

A way in which scientists classify the elements.

• Periodic Table

• Dimitri Mendeleev

• Elements

• Atoms

Answer explanation

CORRECT:

Periodic Table - It is a table in which the chemical elements are arranged in order of increasing atomic number.

INCORRECT:

Dimitri Mendeleev

He is  known for formulating the Periodic Law and creating the periodic table 

of elements .

Elements

 

Is a type of atom which number of protons is the same in its atomic nucleus.

Atom

It is the basic building blocks of matter and  the smallest unit of matter .

The process of making food in a plant is called …

• Transpiration

• Respiration

• Photosynthesis

• Fertilisation

Answer explanation

CORRECT :

Photosynthesis

It is a process where plants produce their own food is called photosynthesis.

INCORRECT:

Transpiration

Tanspiration is the  process in the parts of the plants by

 which water is lost in the form of water vapour .

Respiration

Process  in plants that involves using the sugars that are produced

during photosynthesis plus oxygen to produce energy for the plant to  grow.

Fertilisation

Fertilization is a  sexual reproduction process, which occurs

after pollination and germination.

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Which of these is not needed to make food in a plant?

• Flower

• Sunlight

• Carbon Dioxide

• Chlorophyll

Answer explanation

CORRECT :

Flower

Instead of using photosynthesis or sunlight to generate nutrients, the

plant parasitises the fungi in the forest soil for its daily nutitrition dose .

INCORRECT :

Sunlight

Carbon dioxide

Chlorophyl 

These are the primary need that is essential for photosynthesis are carbondioxide,water,sunlight and chlorophyl.

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What is the reaction for photosynthesis?

• light + water -> starch + O2

• CO2 + light + water -> starch + O2

• light + water -> starch + CO2

• CO2 + light -> starch + O2

Answer explanation

CORRECT:

CO2 + light + water -> starch + O2

Photosynthesis converts carbon dioxide and water into oxygen and glucose. 

THE REST IS INCORRECT:

Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

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What by-product do animals use which is produced during photosynthesis.

• Carbon dioxide

• Water

• Chlorophyll

• Oxygen

Answer explanation

CORRECT:

Oxygen

Oxygen is a byproduct of photosynthetic reaction.

It is release as an excterory gas  by the stomata .

INCORRECT:

Carbon Dioxide - Carbon dioxide is an  reactant for the  photosynthesis process.

Water - Water absorbed during photosynthesis by the roots which  is used

along with carbon dioxide to synthesise glucose.

Chlorophyll - Chlorophyll is a green pigment in the leaves of plants and it

is required for trapping radiant energy.

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NGSS.MS-LS2-3

What do humans and animals breathe out?

• Water

• Carbon dioxide

• Oxygen

• Chlorophyll

Answer explanation

Carbon Dioxide

CORRECT:

All animals, including humans, needs oxygen to survive . Animals breathe in the oxygen that is made by plants and breathe out  a waste product called carbon dioxide. 

INCORRECT:

 Water 

Oxygen

Chlorophyll

The human body does not contain chloroplasts/chlorophyll. We are unable to carry out the light dependent process that occurs in plants. 

An organism that feeds on dead plant or animal matter.

• Consumer

• Decomposer

• Algae

• Producer

Answer explanation

CORRECT:

Decomposer

Decomposers feed on dead things: dead plant materials such as leaf litter and wood, animal carcasses.

INCORRECT:

Consumer

Is a living creature that eats organisms from a different population.

A consumer is

a heterotroph and a producer is an autotroph.

Algae

Primary consumers are in turn eaten by fish, small sharks.

Producer

Producers, also known as autotrophs, make their own food.

A fever-like disease that begins with a mosquito bite.

• HIV

• Tuberculosis

• Cholera

• Malaria

Answer explanation

CORRECT:

Malaria

 Malaria is a serious and sometimes fatal disease caused by a parasite that commonly infects a certain type of mosquito which feeds on humans.

INCORRECT:

HIV

Is a virus that attacks the body's immune system. If HIV is not treated, it

can lead to AIDS.

Tuberculosis (TB) is caused by a bacterium called

Mycobacterium tuberculosis. The bacteria usually attack the lungs.

Cholera

Cholera is a bacterial disease that is spread through water

that is contaminated. Cholera causes severe dehydration and diarrhea.

What is the name of the largest stars?

• Protostars

• Supergiants

• Red Giants

• Dwarf Stars

Answer explanation

CORRECT:

Supergiant -A star that is larger, brighter, and more massive than a giant star, being thousands of times brighter than the Sun.

INCORRECT :

Protostar

A cloud of gas and dust in space that develop into a star.

Red giant

Is a dying star in the final stages of stellar evolution.

Dwarf star

Any star of average or low luminosity, mass, and in size.