Test your Understanding Know and Comprehend A radially symmetrical animal such as Hydra is likely to have (a) a forebrain (b) a nerve net (c) cerebral ganglia (d) a ventral nerve cord (e) cerebral ganglia and a nerve net

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

Chapter 42, Problem 1TYU

Test your Understanding

Know and Comprehend

A radially symmetrical animal such as Hydra is likely to have (a) a forebrain (b) a nerve net (c) cerebral ganglia (d) a ventral nerve cord (e) cerebral ganglia and a nerve net

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Match the following columns A and B and choose the option with all correct match. Column A Column B a. Reptilia (i) Jointed locomotory appendages b.Mammalia (ii) Presence of epidermal scales or scutes Presence of different types of teeth in c.Arthropoda(iii: jaws Presence of muscular foot, mantle and visceral hump d.Mollusca (iv)[ a(i), b(ii), c(ii), d(iv) O a(ii), b(iii), c(i), d(iv) a(iv), b(iii), c(ii), d(i) a(ii), b(ii), c(iv), d(1)

1) Hearing in sauropsids differs from that in synapsids in that sauropsids _____ . A) can hear a larger range of frequencies than synapsids B) have longer cochlea than synapsids C) have only one ear ossicle whereas synapsids have 3 D) have only 2 semicircular canals whereas synapsids have 3 E) use their air bladders to assist with sound conduction

How do body structures and functions of a flatworm compare with those of a cnidarian for a. sensory responses to the environment? b. arrangement of the nervous system? c. obtaining food? d. movement? e. excretion of body wastes?

Answer 2

Textbook Question

Chapter 42, Problem 1TYU

Test your Understanding

Know and Comprehend

A radially symmetrical animal such as Hydra is likely to have (a) a forebrain (b) a nerve net (c) cerebral ganglia (d) a ventral nerve cord (e) cerebral ganglia and a nerve net

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 42, Problem 1TYU

Test your Understanding

Know and Comprehend

A radially symmetrical animal such as Hydra is likely to have (a) a forebrain (b) a nerve net (c) cerebral ganglia (d) a ventral nerve cord (e) cerebral ganglia and a nerve net

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 42, Problem 1TYU

Test your Understanding

Know and Comprehend

A radially symmetrical animal such as Hydra is likely to have (a) a forebrain (b) a nerve net (c) cerebral ganglia (d) a ventral nerve cord (e) cerebral ganglia and a nerve net

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.

Conclusion

Organisms with radial symmetry in their body organization, such as Hydra, have a nervous system consisting only of nerve nets.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction: Hydra is a freshwater organism of the phylum Cnidaria. They have very high regenerative ability. They are radially symmetrical invertebrates and have tentacles to capture their food.

Answer 12

Answer to Problem 1TYU

Correct answer: Radially symmetrical organisms such as Hydra have simple nervous systems like the nerve net. Hence, the correct answer is option (b).

Answer 13

Explanation of Solution

Reason for the correct answer:

Radial symmetry is generally present in simpler organisms such as Hydra. Organisms belonging to simpler classes in the animal kingdom have less complexed nervous systems. They usually have interconnected networks of neurons, and no central control system is present in such simpler neural systems. Such connection of neurons forms the nerve net.

Option (b) is given as “a nerve net”.

Radially symmetrical organisms such as Hydra have simpler body organization and simpler nervous systems such as the nerve nets. Hence, the correct answer is option (b).

Reasons for incorrect answers:

Option (a) is given as “a forebrain”.

A forebrain is a part of a complex nervous system that is found in higher organisms with a complex body organization. The forebrain is not found in simpler organisms such as Hydra. Hence, option (a) is incorrect.

Option (c) is given as “cerebral ganglia”.

Radially symmetrical organisms have simple nervous systems that do not have any control center. Cerebral ganglia act as a control center in the nervous systems. Hence, option (c) is incorrect.

Option (d) is given as “a ventral nerve cord”.

Ventral and dorsal sides can be defined only in organisms with bilateral symmetry. In organisms with simple body organization, there is no nerve cord present. Thus, radially symmetrical organisms cannot have a ventral nerve cord. Hence, option (d) is incorrect.

Option (e) is given as “cerebral ganglia and a nerve net”.

Simpler organisms do not have cerebral ganglia in their nervous systems. Hence, option (e) is incorrect.

Hence, options (a), (c), (d), and (e) are incorrect.