EXERCISES IN UNIT 9
Exploring Relationships in Nature
Delve into the fascinating world of biological relationships with our engaging quiz! Test your knowledge about parasitic and symbiotic interactions among various living organisms, particularly focusing on crabs and algae.
In this quiz, you'll discover:
- The characteristics of parasitic and symbiotic relationships
- Insights into the life of crabs and algae
- Key facts and inferences drawn from the passage provided
1. The subject of this passage in Exercise 3 (page 131) is
Two different kinds of relationship among living things
Parasitic relationship
Relationship that are mutually beneficial to living things
Symbiosis
2. Which of the following is not true about parasitic relationship?
There are two partners in a parasitic relationship
One partner in a parasitic relationship hurts the other
The stone crab can be part of a parasitic relationship
A parasitic relationship is usually symbiotic
3. According to the passage, what does sacculina eat?
The stone crab
Food dropped by the crab
Barnacles
Other parasites
4. The calliactic anemone …….
Is a parasite
Harms the hermit crab
Eats into the hermit crab
Assist the hermit crab
5. Which of the following can be inferred from the passage in Exercise 3 (page 131)?
All crabs are involved in parasitic relationships.
All crabs are involved in symbiotic relationships
Some crabs are involved in symbiotic relationships, while others are not.
Crabs are involved in neither parasitic nor symbiotic relationship.
6. What is the author’s main purpose in Exercise 3 (page 135)?
To show what color algae is
To differentiate the various classification of algae.
To describe where algae is found.
7. Which of the following is not true about algae?
All types of algae have one cell only.
It can be found out of water.
It can use photosynthesis.
8. Algae remnants found in Africa are ……
Still flourishing
Extremely old
Photogenic
9. Brown algae would most likely be found ……….
On trees
Near green algae
In the ocean
10. According to the passage, red algae is …………..
Fragile
Sturdy
Huge
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