Sign In

Biology for IGCSE & O level - Characteristics And Classification Of Living Organisms (Section 3)

1
What is the purpose of the cell wall in plant cells?
Answer
(B)
To provide support and protection
2
Which of the following is the role of the cytoskeleton in a cell?
Answer
(B)
To provide structural support
3
What is the term for the leaf layer in ferns that helps to reduce water loss?
Answer
(C)
Cuticle
4
What is the key role of the leaves in plants?
Answer
(B)
Photosynthesis
5
Which of the following processes are essential for the survival of a plant?
Answer
A
B
C
6
Which of the following are functions of the skeletal system in vertebrates?
Answer
A
B
C
7
What is the function of the endoplasmic reticulum in a cell?
Answer
(A)
Protein synthesis and transport
8
What is the function of the stomata?
Answer
A
C
9
What is the purpose of the two-name system in scientific classification?
Answer
(D)
Both A and C
10
What is the purpose of a vascular system in plants?
Answer
(B)
To transport water and nutrients
11
What is the primary function of the nervous system?
Answer
(C)
Coordination and control
12
Which characteristic differentiates birds from reptiles?
Answer
(C)
Flight
13
Which process is most directly responsible for gas exchange in animals?
Answer
(B)
Respiration
14
Which structure in plants transports sugars?
Answer
(B)
Phloem tubes
15
Which of the following describes a function of the skeletal system?
Answer
(C)
Providing structural support
16
Which characteristic is shared by both ferns and flowering plants?
Answer
(C)
Presence of xylem and phloem
17
What is the main function of the nervous system?
Answer
(C)
To control body functions
18
Which features are present in both plant and animal cells?
Answer
A
C
19
Which of the following features are present in both plants and animals?
Answer
B
C
20
Which of the following is a characteristic of a prokaryotic cell?
Answer
(C)
Small size
21
Which of the following is the function of the ribosomes in a cell?
Answer
(A)
Protein synthesis
22
Which of the following is the best definition of a dichotomous key?
Answer
(B)
A key that uses a series of paired, contrasting statements to identify an organism.
23
Which statement is correct for all the organisms?
Answer
B
C
24
In ferns, what structure releases microscopic spores?
Answer
(C)
Leaves
25
What is the function of the circulatory system?
Answer
(B)
To transport oxygen, nutrients, and waste
26
Which of the following is NOT a feature of dicotyledons?
Answer
(C)
Leaves with parallel veins
27
Which of the following is NOT one of the five kingdoms of life?
Answer
(D)
Prokaryota
28
Which of the following is a feature of echinoderms (e.g., starfish)?
Answer
(C)
Spiny skin
29
Which of these is an example of a vascular plant?
Answer
(B)
Fern
30
What type of leaf veins is seen in monocotyledons?
Answer
(B)
Parallel
31
What are the leaves of most monocotyledons?
Answer
(A)
Parallel veins
32
What is the term for the breakdown of food for energy in an organism?
Answer
(C)
Digestion
33
What are the defining characteristics of a reptile?
Answer
A
C
D
34
Which of the following are characteristics of arthropods?
Answer
A
B
C
35
Which part of a plant contains chloroplasts?
Answer
(C)
Leaves
36
Which of these is a characteristic of prokaryotic cells?
Answer
(C)
Are generally smaller than eukaryotic cells
37
What is the function of mitochondria in eukaryotic cells?
Answer
(C)
Cellular respiration
38
Which of the following is NOT a characteristic of a flowering plant?
Answer
(C)
Production of spores
39
Which of the following is the function of the xylem in plants?
Answer
(A)
Transporting water and minerals
40
What is the function of chlorophyll in plants?
Answer
(B)
Absorbing sunlight
41
Which of the following is the correct binomial nomenclature for humans?
Answer
(A)
Homo sapiens
42
Which of the following is NOT a feature used in a dichotomous key?
Answer
(D)
Continuous measurements
43
Which group of animals includes those with a segmented body, an exoskeleton and jointed limbs?
Answer
(B)
Arthropods
44
What is the function of the digestive system?
Answer
(B)
Breaking down food
45
What is the name of the process where plants release water vapor into the atmosphere?
Answer
(B)
Transpiration
46
Which plant structure is the part of the plant above the ground?
Answer
(B)
Shoot
47
Which term describes the action of taking in of materials from the environment for energy, growth, and development?
Answer
(B)
Nutrition
48
Which of the following is a feature used in classifying vertebrates?
Answer
(D)
Pattern of bones in the front limb
49
Which of the following is a key difference between dicotyledons and monocotyledons?
Answer
(C)
Dicotyledons have two cotyledons, while monocotyledons have one.
50
Which group of invertebrates is characterized by a segmented body, jointed appendages, and an exoskeleton?
Answer
(D)
All of the above