EXERCISES IN UNIT 9

A vibrant underwater scene depicting crabs interacting with algae and anemones, showcasing both parasitic and symbiotic relationships among marine life.

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

10 Questions2 MinutesCreated by DivingCoral25

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.

EXERCISES IN UNIT 9

Exploring Relationships in Nature

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