Organization of the Organism
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Cell structure and organisation
SubtopicCell structure and organisation under Organization of the Organism for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
A student views a cheek cell under a microscope. Which of these structures will they NOT be able to see?
A.Nucleus
B.Cell wall
C.Cell membrane
D.Cytoplasm
- 2.
Which of the following parts of a cell is NOT found in a prokaryotic cell?
A.DNA
B.Cytoplasm
C.Cell membrane
D.Nuclear membrane
- 3.
Which organelle is often referred to as the 'powerhouse' of the cell because it releases energy from food?
A.Nucleus
B.Ribosome
C.Mitochondrion
D.Vacuole
- 4.
How many millimeters are there in 5000 micrometers ()?
A.0.5 mm
B.5 mm
C.50 mm
D.500 mm
- 5.
How many millimeters (mm) are there in micrometers (m)?
A.mm
B.mm
C.mm
D.mm
- 6.
Which statement about xylem vessels is correct?
A.They are living cells with a large nucleus
B.They are dead tubes strengthened by lignin
C.They transport sugars from the leaves to the roots
D.They contain many chloroplasts for photosynthesis
- 7.
Which organ system is responsible for the removal of toxic waste products of metabolism from the blood?
A.Digestive system
B.Excretory system
C.Circulatory system
D.Endocrine system
- 8.
Which of the following correctly matches the organelle with its primary function?
A.Mitochondria: Synthesis of glucose
B.Chloroplast: Site of aerobic respiration
C.Ribosome: Synthesis of polypeptides
D.Vacuole: Control of cell division
- 9.
A cell is observed to have a very large number of ribosomes. Which of the following is most likely true about this cell?
A.It is primarily used for storing starch
B.It is highly active in producing proteins
C.It is a dead transport cell like a xylem vessel
D.It is specialized for lipid synthesis
- 10.
Which of the following statements about specialized cells is correct?
A.All specialized cells in an organism have different DNA
B.Specialized cells have specific shapes and organelle counts to perform their roles
C.A red blood cell is larger than a white blood cell to carry more oxygen
D.Muscle cells have fewer mitochondria because they need to save energy
Download the worksheet for Organization of the Organism - Cell structure and organisation to practice offline. It includes additional chapter-level practice questions.
Levels of organisation
SubtopicLevels of organisation under Organization of the Organism for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which of the following is smaller than a tissue?
A.An organ
B.An organ system
C.An organism
D.A cell
- 2.
The nervous system includes the brain, spinal cord, and nerves. Which level of organization does the spinal cord represent?
A.Organ system
B.Organ
C.Tissue
D.Organism
- 3.
Which of these is the term for a structure made of different tissues that work together?
A.Organism
B.Organ system
C.Organ
D.Cell
- 4.
Connective tissue is an example of which level of organization?
A.Cell
B.Tissue
C.Organ
D.Organ system
- 5.
Which of these levels is found in a multicellular organism but NOT in a unicellular organism?
A.Cell
B.Cytoplasm
C.Tissue
D.Cell membrane
- 6.
The mouth and stomach are parts of the digestive system. In this context, what is the level of organization for the stomach alone?
A.Organ
B.Tissue
C.Organ system
D.Organelle
- 7.
The epidermis of a plant is a protective outer layer. What level of organization does it represent?
A.Organ
B.System
C.Tissue
D.Cell
- 8.
The diagram represents the hierarchical levels of organization within the human lymphatic system. Which row correctly identifies the levels of organization for B and C, and provides the correct biological reasoning for the classification of C?
A.B is a cell; C is a tissue because it is a group of similar cells performing a common function.
B.B is an organ; C is an organ system because it is a collection of tissues forming a functional unit.
C.B is a tissue; C is an organ because it is composed of different tissues working together.
D.B is a tissue; C is an organ system because it consists of several organs working together.
- 9.
Why is 'Xylem' categorized as a tissue rather than an organ?
A.It consists of different types of organs
B.It consists of specialized cells working together for a single function (water transport)
C.It is only found in the roots
D.It is a part of the organ system known as the plant
- 10.
The 'Esophagus' is a tube that moves food to the stomach via peristalsis. It contains layers of muscle and a mucosal lining. What is its level of organization?
A.Tissue
B.Organ
C.Organ system
D.Cell
Download the worksheet for Organization of the Organism - Levels of organisation to practice offline. It includes additional chapter-level practice questions.
Size of specimens (Magnification)
SubtopicSize of specimens (Magnification) under Organization of the Organism for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which of the following describes the relationship between the three magnification variables?
A.Image size is the product of magnification and actual size
B.Magnification is the product of image size and actual size
C.Actual size is the product of image size and magnification
D.Image size is the sum of magnification and actual size
- 2.
An image size is and the actual size is . What is the magnification?
A.B.C.D. - 3.
What is expressed in millimeters ()?
A.B.C.D. - 4.
If a micrograph has a magnification of , and the image of a cell is , what is the actual size ()?
A.B.C.D. - 5.
A Hydra specimen is long. If a student wants to draw it with a magnification of , what should be the length of the drawing in ?
A.B.C.D. - 6.
A drawing of a leaf is wide. If the actual width of the leaf is , what is the magnification?
A.B.C.D. - 7.
A fungal spore has an image size of at magnification. What is the actual size?
A.B.C.D. - 8.
A nucleus measures in a drawing where the scale bar is long and represents . What is the actual diameter of the nucleus?
A.B.C.D. - 9.
A micrograph of a red blood cell ( diameter) is . A micrograph of a white blood cell ( diameter) is . What is the ratio of the image diameter of the red blood cell to the image diameter of the white blood cell?
A.B.C.D. - 10.
A scale bar measures and represents . What is the magnification?
A.B.C.D.
Download the worksheet for Organization of the Organism - Size of specimens (Magnification) to practice offline. It includes additional chapter-level practice questions.