The location and function of choanocytes. Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

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Answer 1

Question

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.) Data Table 1Stage Totals PercentInterphase Mitosis: Prophase Metaphase Anaphase Telophase Cytokinesis Totals 100 100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Answer 2

Question

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

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Answer 3

Question

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

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Answer 4

Question

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

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Answer 5

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

Answer 6

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

Answer 7

Chapter 33, Problem 1IQ

a.

Summary Introduction

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

Answer 8

a.

Expert Solution

Explanation of Solution

Location: Choanocytes are usually flagellated. These flagellated choanocytes line the spongocoel. Spongocoel is the large cavity present in the center of sponges.

Function: The functions of choanocytes are as follows:

They create water current enabling the flow of water through the sponge.
They trap bacteria and engulf food particles by the process of phagocytosis.

Answer 9

a.

Expert Solution

Answer 10

a.

Expert Solution

Answer 11

Expert Solution

Answer 12

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

Answer 13

b.

Summary Introduction

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

Answer 14

b.

Expert Solution

Explanation of Solution

Location: Amoebocytes are present in the mesohyl region. Mesohyl is the gelatinous layer that separates the two body layers of sponges.

Function: The functions of amoebocytes are as follows:

They move through the mesohyl and take up food materials from choanocytes and surrounding water medium.
Digest food material and carry the nutrients to other cells through their amoeboid movement.
They manufacture the tough skeletal fibres inside the mesohyl.

Answer 15

b.

Expert Solution

Answer 16

b.

Expert Solution

Answer 17

Expert Solution

Answer 18

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The location and function of choanocytes. Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

Concept explainers

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

Explanation of Solution

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

Explanation of Solution

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Chapter 33 Solutions

The location and function of choanocytes. Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

Concept explainers

To determine: The location and function of choanocytes. Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

Explanation of Solution

To determine: The location and function of amoebocytes. Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.

Explanation of Solution

Want to see more full solutions like this?

Chapter 33 Solutions

To determine: The location and function of choanocytes.

Introduction: Choanocytes are present in sponges. They have flagella and fringe of protoplasm is present at the base of flagella. They are also known as “collar cells”. They make up a layer called choanoderm in sponges.

To determine: The location and function of amoebocytes.

Introduction: They are present in sponges and also in many other groups of invertebrates. They are capable of amoeboid movement due to presence of pseudopodia.