WorksheetsScience Revision Form 1 Chapter 1 to 4
Total questions: 50
Worksheet time: 2hrs 39mins
Which of the following choices is the correct order of steps in the scientific method?
Hypothesize - draw conclusions - experiment - analyze data
Analyze data - hypothesize - experiment - draw conclusions
Hypothesize - experiment - analyze data - draw conclusions
Hypothesize - analyze data - draw conclusions - experiment
This step of the scientific method is an educated guess or a prediction.
Hypothesis
Research
Observation
Conclusion
Why should experiments be repeated at least 3 times?
to show validity
to increase reliability
to show other people your results
because it's fun to do Science experiments
Which of the followings does not present in animal cell?
Antara berikut yang manakah tiada dalam sel haiwan?
Cell wall
Centriole
Mitochondria
Chloroplast
Which of the following structure contain DNA that carries genetic information?
Antara struktur berikut yang manakah mengandungi DNA yang membawa maklumat keturunan?
Cytoplasm
Mitochondria
Nucleus
Chloroplast
Which is the correct function for mitochondria?
Yang manakah fungsi yang betul bagi mitokondria?
Produces energy for reaction
Menghasilkan tenaga untuk tindakbalas
Acts as a medium where chemical reactions occur
Bertindak sebagai medium dimana tindakbalas kimia berlaku
Control all activities in the cell
Mengawal semua aktiviti di dalam sel
Which of the following is unicellular organisms?
Antara berikut yang manakah adalah organisma unisel?
Spirogyra
Amoeba
Hydra
Euglena
What is the function of white blood cells?
Apakah fungsi sel darah putih?
Contract and relaxes to enable muscle movements
Mengecut dan mengendur untuk membolehkan pergerakan otot
Carry information in the form of impuls to all parts of the body
Membawa maklumat dalam bentuk impuls ke seluruh bahagian badan
Destroy harmful bacteria and virus entering the body
Memusnahkan bakteria dan virus merbahaya yang masuk ke dalam badan
What is cell ?
Living organism
A brick
Basic unit of life
component that combine together to form an organ
What is the function of Epithelium cell ?
Send information (impulse)
Protects the surface layer of the skin and internal organs
Transport oxygen
Destroy bacteria
What is the function of Guard cells ?
Reduces the water loss and enable the gaseous exchange
Control the size of the stoma (leaf pore)
Contain a large amount of chloroplasts for photosynthesis
Absorb water and mineral salts from the soil
Which of the following is the correct sequence of the cell organisation ?
Organ - tissue - system - organism - cell
Tissue - cell - organ - system - organism
Cell - tissue - organ - system - organism
Plant make their own food through ?
Respiration
Photosynthesis
Why the leaf must be dipped into boiling water ?
To change the colour of the leaf
To break the cell wall
To extract out chlorophyll
To detect the presence of starch
What are the products of photosynthesis ?
Oxygen
Carbon dioxide
Starch
Chlorophyll
What are the product of respiration ?
Carbon dioxide, water and energy
Carbon dioxide, oxygen and water
Glucose, oxygen and carbon dioxide
Water, energy and glucose
A few organs with related functions that work together for a specific function forms a
cell
tissue
organism
system
What type of human body system shown in the diagram?
Respiratory system
Digestive system
Muscular system
Nervous system
State reasons why photosynthesis is important.
supplies oxygen to animals
Supplies energy to animals
Removes carbon dioxide from the air
removes oxygen from air
Which of the following statements is the best to explain the need for homeostasis to the organism ?
Avoid sudden death
Maintain constant body temperature
Ensure that all enzymes involved in chemical reactions work well
Provides optimum internal environment for efficient metabolic activity
Shivering in the cold produces heat in the body.
True
False
All chemical reactions in living cells are controlled by _________________ that are sensitive to surrounding changes.
brain
nerve
fluids
enzymes
What is the corrective mechanism occurred when body temperature decrease from the normal ?
Sweating
Hair bends
Blood vessels will contract
The skeletal muscles are not active
Which of the following helps in the homeostasis control process?
P - Organ
Q - Endocrine glands
R - Muscles
S - Nerve
P, Q and R only
P, R and S only
Q, R and S only
P, Q, R and S
When performing active activities such as running 100m, the heart rate increases faster than in rest. Which of the following statements accurately describes this situation?
Keep the body temperature constant
Maintain water content in the body
More oxygen can be forced into the lungs
Ensure that all parts of the body receive the supply of oxygen and nutrients quickly
Which of the following organisms can maintain body temperature, even though the temperature in the surroundings changes significantly?
Toad
Crocodile
Fish
Elephant
Homeostasis does not occur in plants
True
False
During the day, stoma __________to enable more water to be evaporated from the leaves through transpiration.
opens
closes
When the temperature is too high, why the stoma closes?
To reduce water evaporated from the leaves through transpiration.
To increase water evaporated from the leaves through transpiration.
Another name for a sex cell, such as the egg and sperm, is
gamete
pollen
zygote
somatic cell
When a sea star grows a new body off a broken arm, what kind of reproduction is this?
Sexual
Asexual
Differentiation
Budding
Which form of reproduction is QUICK?
Asexual reproduction
Sexual reproduction
Which form of reproduction increases the chances of survival in a changing environment?
Asexual reproduction
Sexual reproduction
Which form of reproduction doesn't need a partner?
Asexual reproduction
Sexual reproduction
These help the plant to reproduce.
flowers
stems
leaves
roots
The yellow, powdery stuff on the anthers
Pollen
Dust
dirt
Germs
What attracts insects for pollination?
anther
ovary
pistil
petals
Which statement best describes pollination?
The transfer of pollen grains form the anther to the pistil
The transfer of pollen grains from the pistil to the anther
The transfer of pollen grains from the pistil to the stamen
A bee coming to a flower for nectar
Pollination is the process by which the pollen grains are transferred from the ________ to the _________.
anther... ovary
anther ... pistil
pistil ... ovary
pistil ... filament
Choose a correct statement about external fertilisation.
Nucleus of the male gamete fuses with nucleus of the female gamete inside the body of the female parents.
Nucleus of the male gamete fuses with nucleus of the female gamete outside the body of the female parents.
The male parents releases sperm into the body of the female parents.
Example of organism which undergoes external fertilisation is dragonfly.
Which part of the male reproductive system that transports sperms from the testis to the urethra inside the body?
Penis
Prostate glands
Scrotum
Sperm duct
