Match columns I, II, and III correctly. Organs Membranous coverings Location Brain Pleura Abdominal cavity Kidneys Capsule Mediastinum Heart Meninges Enclosed in the thoracic cavity Lungs Pericardium Cranial cavity

Brain- Meninges- Cranial cavity The brain forms the central nervous system (CNS) along with the spinal cord. Meninges are membranes that cover and protect the brain and spinal cord. The brain is protected within the cranial cavity of the skull. Kidneys- Capsule- Abdominal cavity Kidneys are the main excretory organs in mammals. The outer membranous covering of the kidneys is called the capsule. The nephrons are the structural and functional units of kidneys. The kidneys are located in the abdominal cavity on either side of the vertebral column. Heart- Pericardium- Mediastinum The heart acts as the pumping organ that circulates blood throughout the body. The tough outer covering of the heart is called the pericardium. The mediastinum is the division of the thoracic cavity that contains the heart. Lungs- Pleura- Enclosed in the thoracic cavity Lungs are a pair of spongy organs that help in the exchange of respiratory gases, i.e., oxygen and carbon dioxide. The pleura is the outer membranous covering of the lungs. The lungs are enclosed in the thoracic cavity within the rib-cage. The thoracic cavity is separated from the abdominal cavity by the diaphragm.

E M B I B E

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 3

EASY

10th Tamil Nadu Board

IMPORTANT

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The anterior end of the leech has a lobe-like structure called . (anterior sucker/ clitellum/ posterior sucker)

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Important Questions on Structural Organisation of Animals

EASY

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 4

The blood-sucking habit of the leech is known as _____. (frugivorous/ herbivorous/ sanguivorous)

EASY

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 5

_____(Pancreas/Kidneys)separate nitrogenous waste from the blood in rabbits.

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10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 7

_____ spinal nerves are present in rabbits. (33 pairs/ 35 pairs/ 37pairs)

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10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 1

Identify whether the statement is True or False. Correct the false statement.

An anticoagulant present in the saliva of the leech is called heparin.

EASY

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 2

Identify whether the statement is True or False. Correct the false statement.

The vas deferens serves to transport the ovum.

EASY

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 3

Identify whether the statement is True or False. Correct the false statement.

Diastema is a gap between premolar and molar teeth in rabbits.

MEDIUM

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 4

Identify whether the statement is True or False. Correct the false statement.

The cerebral hemispheres of the rabbit are connected by a band of nerve tissue called the corpora quadrigemina.

MEDIUM

10th Tamil Nadu Board

IMPORTANT

Science Standard 10>Chapter 13 - Structural Organisation of Animals>TEXTBOOK EVALUATION>Q 1

Match columns I, II, and III correctly.

Organs	Membranous coverings	Location
Brain	Pleura	Abdominal cavity
Kidneys	Capsule	Mediastinum
Heart	Meninges	Enclosed in the thoracic cavity
Lungs	Pericardium	Cranial cavity

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