Unit 1 Test: Diversity of Living Things
Name: __________________
Part A: Multiple Choice (30 marks)
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1. Which of the following is an adaptation plants required before they could permanently inhabit
terrestrial environments?
a) cell walls
b) cells with chlorophyll a
c) cells with chlorophyll b
d) a system to transport water and dissolved substances
e) the ability to store food energy in the form of starch
2. Which group of vertebrate animal remains partially tied to aquatic ecosystems?
a) mammals
b) birds
c) reptiles
d) amphibians
e) fish
3. Which statement about animals is true?
a) All members of the animal kingdom have a coelom
b) All members of the animal kingdom are composed of only two cell layers.
c) All members of the animal kingdom have segmented bodies.
d) All members of the animal kingdom are heterotrophic.
e) All members of the animal kingdom use sexual reproduction only.
4. What separates vertebrate animals from invertebrate animals?
a) Vertebrate animals have a spinal cord, while invertebrates lack this structure.
b) Vertebrate animals are heterotrophic, while some invertebrates are autotrophic.
c) All vertebrate animals are ectothermic, while all invertebrate animals are endothermic
d) Vertebrate animals are all carnivores, while invertebrates are mostly herbivores.
e) Vertebrate animals all bear live young, while most invertebrates reproduce by laying eggs.
5.
What is most closely related to plants, but is not classified in the plant kingdom?
a) Red algae
b) Green algae
c) Brown algae
d) Angiosperms
6. Which of the following do not help an organism move?
a) Cilia
b) Flagella
c) Pseudopodia
d) Vacuole
7. Which organelle(s) were theorized to once be prokaryotic cells, similar to bacteria?
a) Mitochondria
b) Chloroplasts
c) Nucleus
d) A and B
e) A and C
8. All protists are unicellular and ______
a) Prokaryotic
b) Eukaryotic
c) Plant-like
d) Algae
9. Which of the following are fungus-like protists?
a) Protozoan
b) Amoebas
c) Euglenoids
d) Slime moulds
10. Which statement about bacteria is true?
a) They cannot exchange DNA.
b) They occur in three main shapes—circle, rod, and spiral.
c) They are all heterotrophs.
d) They are eukaryotes.
e) They are commonly known as extremophiles.
11. Which group exhibits radial symmetry?
a) sponges
b) crustaceans
c) mammals
d) cnidarians
e) tetrapods
12. Which is an arthropod
a) Bullfrog
b) Centipede
c) Coral
d) Octopus
e) Sea star
13. What is true about an insect skeleton?
a) It is an endoskeleton made of cartilage.
b) It is an endoskeleton made of chitin.
c) It is an exoskeleton made of cellulose.
d) It is an exoskeleton made of chitin.
e) It is an exoskeleton made of cartilage.
14. What is the name of a mushroom’s spore-producing
a) diploid zygote
b) mycelium
c) fruiting body
d) hyphae
e) bud
15.
Use the information in the dichotomous
key below to classify the organism shown.
This organism is in class:
a) Osteichthyes
b) Agnatha
c) Reptilia
d) Chondrichthyes
e) Amphibia
16. Which statement about seeds is false?
a) Seeds allow plants to reproduce sexually without needing water.
b) Seeds allow protection against harsh environmental conditions.
c) Seeds can develop into root-like structures called rhizoids.
d) Seeds can survive without water for many years.
e) Seeds can be dispersed by different means.
17. Fungi have roots
a) True
b) False
18. Which of the following is correct about bryophytes?
a) They have no vascular tissue.
b) They have xylem and phloem.
c) They include flowering plants.
d) They do not include mosses.
19. In a gram stain, if the bacterium is gram positive, the colour will be:
a) Purple
b) Pink
c) Blue
d) Clear
20. Gram _______ bacteria have a thicker layer of peptidoglycan in their cell wall, and stains purple
(crystal violtet)
a) Positive
b) Negative
21. Which of the following is an abiotic feature of an ecosystem?
a) Water
b) Grass
c) Frog
d) Deer
22. How does biodiversity affect sustainability?
a) High biodiversity = high sustainability
b) High biodiversity = low sustainability
c) Low biodiversity = high sustainability
d) Low biodiversity = low sustainability
23. The science of naming and classifying organisms
a) Classification
b) Biodiversity
c) Dichotomous Keys
d) Taxonomy
24. According to binomial nomenclature, the scientific name of an organism always contains its
_____ and its _____ names.
a)
b)
c)
d)
Domain:Kingdom
Phylum:Species
Genus:Species
Family:Genus
25. A multicellular photosynthetic eukaryote with cellulose-based cell walls. Hypothesis that green
algae are the closest evolutionary relatives of land plants
a) Plant
b) Fruit
c) Vertebrate
d) Flower
26. Angiosperms can be either monocots or dicots. Which of the following does not differ between
monocots and dicots?
a) Number of cotyledons present
b) Vascular tissue arrangement
c) Number of petals
d) Type of chlorophyl
27. Fungi can reproduce both sexually and asexually. Budding and fragmentation are examples of:
a) Sexual reproduction
b) Asexual reproduction
c) Reproduction for organisms in another kingdom
28. Which of the following is false about porifera?
a) They are asymmetrical
b) They are filter feeders
c) They are invertebrates
d) They have an ectoderm, a mesoderm, and an endoderm
29. Which of the following is a mollusc?
a) Octopus
b) Snail
c) All the above
d) None of the above
30. Which of the following fit the description:
Marine animals, with radial symmetry, spiny endoskeletons, and tube feet.
a) Echinoderms
b) Molluscs
c) Arthropods
d) Vertebrates
Part B: Short Answer (30 marks)
1. Describe what a xylem and phloem are, their function and why they are important for plants. (2
marks)
2. Name 3 differences between amphibians and reptiles (3 marks)
3. Differentiate between the lytic cycle and the lysogenic cycle. In which cycle does a provirus
form? (2 marks)
4. What are 2 unique features of mammals that other animals do not posses? (2 marks)
5. What is radial symmetry versus bilateral symmetry. Give an organism as an example for each. (4
marks)
6. What are the two body forms of cnidarians? (2 marks)
7. How does the exoskeleton allow arthropods to live on land? (1 mark)
8. What is the difference between ectodermic and endothermic? (2 marks)
9. Organisms in domain Archaea are extremophiles. Name 3 types of extremophiles. (3 marks)
10. Differentiate between the morphological species concept, biological species concept and the
phylogenetic species concept? (3 marks)
11. What is sexual versus asexual reproduction? (2 marks)
12. What autotrophs and heterotrophs? Give an example of each. (4 marks)