Biology

Animal Tissue and Anatomy

1,349 Questions

Test your knowledge of animal tissues and anatomical structures with these practice questions. The set covers human organs, reproductive systems, and sensory receptors. These fundamental biology topics frequently appear in medical and competitive examinations.

Sensory receptorsReproductive organsBody structure frameworkEar drum pressureExcretory system

Animal Tissue and Anatomy Questions

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

In the human ear, in utriculus and calculus, there are
calcareous particles called catatonia, which respond to

  1. Change of posture

  2. Internal pressure

  3. Hearing

  4. Sense of smell
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Otoconia helps in balancing the body, during the change of posture when the  body is imbalanced and tilted onto one side the otoconia touch the steroidal and bend it causing the generation of nerve impulse.

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

Otoconium is found in

  1. Perilymph

  2. Haemolymph

  3. Synovial fluid

  4. Otolithic membrane
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An otolith also called as statoconium or otoconium, is a structure in the saccule or utricle of the inner ear, in the vestibular labyrinth of vertebrates. Statoconia (also called as otoconia) are numerous grains, often spherical in shape, between 1 and 50 m. Statoconia are also sometimes termed a statocyst. 

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

Otolith (otoconia) are CaCO$ _3$ particles found in the

  1. Perilymph

  2. Endolymph

  3. Bones

  4. Vitreous humour
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An otolith, also called statoconium or otoconium, is a structure in the saccule or utricle of the inner ear, specifically in the vestibular labyrinth of vertebrates. They are sensitive to gravity and linear acceleration. In mammals, otoliths are small particles, composed of a combination of a gelatinous matrix and calcium carbonate in the endolymph of the saccule and utricle. The inertia of these small particles causes them to stimulate hair cells, when the head moves. 

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

Ear dust is not situated in endolymph of

  1. Utriculus

  2. Ampulla

  3. Sacculus

  4. Endolymphatic sac
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While semicircular canals respond to angular acceleration in specific directions, hair cells in the utricle and saccule respond to linear accelerations. The utricle and saccule are sac-like structures, that contain a patch of sensory hair cells called as the macula. The hair cells in the macula, which are similar to those in the cristae, are embedded in the otolith (ear stone) membrane, a gelatinous structure, that contains a large number of hexagonal prisms of calcium carbonate called as otoconia (ear dust). 

Since the density of the otoconia is greater than the surrounding endolymph, the otolith membrane will be displaced by the force of gravity or other linear accelerations. In humans, the enlarged ends of each of three semicircular bony canals in the inner ear are known as osseous ampullae. Tiny hairs in this ampullae help to keep the brain informed of how the head is oriented, helping the person's sense of balance. 
Therefore, the correct answer is option B.

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

Which part of the human ear converts pressure variations into electrical signals?

  1. Eustachian tube

  2. Auditory nerve

  3. Ear drum

  4. Cochlea
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When the pressure variations strike the ear, they find their way through the external auditory canal to the tympanic membrane, setting it into vibration. The signal is thus converted to mechanical vibrations in solid matter. These vibrations of the tympanic membrane are transmitted to the ossicles, which in turn transmit them to the cochlea. Here, the signal undergoes a second change of nature, being converted into pressure variations within the liquid. These are then transformed again by specialised hair cells, which convert the liquid waves into nervous signals. Inside the cochlea, the tectorial membrane moves along with the pressure variations of the cochlear fluid. This membrane is in contact with the cilia on the top of the hair cells. There are two kinds of hair cells. The outer hair cells are the actual receptors. When the tectorial membrane moves, so does the hair on the outer cells. This movement is then encoded into electrical signals and goes to the brain through the cochlear nerve.

Multiple choice zoology option a: neurobiology and behaviour structure and function of ear perception of stimuli neural control and coordination

How many coils are present in cochlear duct of rabbit?

  1. $\displaystyle 2 \frac{1}{2}$
  2. $\displaystyle 2 \frac{3}{4}$
  3. $\displaystyle 1 \frac{1}{2}$
  4. $\displaystyle 1 \frac{1}{4}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cochlea is the auditory portion of the inner ear. It is a spiral-shaped cavity in the bony labyrinth, in rabbit making 2.5 turns around its axis, the modiolus. A core component of the cochlea is the organ of Corti, the sensory organ of hearing.

So, the correct answer is option A.

Multiple choice zoology nervous system neural tissue structure of neuron nervous tissues

Which of the following is formed of neural tissue?

  1. Spinal cord and brain

  2. Kidneys

  3. Gall bladder and abdomen

  4. Esophagus and bronchi
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Neural tissue or nervous tissue consists of central nervous system and peripheral nervous system. The central nervous system is made up of the spinal cord and the brain. The peripheral nervous system consists of the nerves made up of nerve cells called neurons.

So, the correct answer is 'Spinal cord and brain'.

Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology animal tissues and its type tissues: animal tissues fluid connective tissue cell division in embryo development division for growth and reproduction

Which of the following organs contain(s) smooth muscles?

  1. Blood vessels

  2. Iris of the eye

  3. Bronchi

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Smooth muscles are spindle-shaped and are under involuntary control. They are seen in the internal organs such as the blood vessels, iris and the lung bronchi. In the blood vessels, they enable the blood flow. In iris, they increase the pupil size in the presence of bright light. They help in lung contraction and relaxation due to their presence in bronchioles. Thus the correct answer is option D.

Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology animal tissues and its type tissues: animal tissues fluid connective tissue cell division in embryo development division for growth and reproduction

Tonsils in the pharynx are made up of 

  1. connective tissue

  2. muscular tissue

  3. lymphatic tissue

  4. neuro-muscular tissue
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thick fibers of muscle and connective tissue attach the pharynx to the base of the skull. So the correct option is ' connective tissue'.
Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology cell division in embryo development division for growth and reproduction

Pseudo stratified epithelium is present in

  1. Urinary bladder

  2. Nephron

  3. Larynx

  4. Trachae
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pseudostratified columnar epithelium lines the respiratory tract, including the trachea (misspelled as 'Trachae' in options). This epithelium appears stratified but all cells contact the basement membrane, with cilia that move mucus.

Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology cell division in embryo development division for growth and reproduction

Which of the following statement is $NOT$ $CORRECT$ about the compound epithelium?
I.   It consist of several layers
II.  It covers the dry surface of the skin, the moist surface of buccal cavity, inner lining of ducts of salivary glands and pancreatic ducts
III.  It provides protection against chemical and mechanical stresses 
IV.  Being multilayered it has a great role in secretion and absorption

  1. Only III

  2. Only IV

  3. Only I and IV

  4. Only II
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Compound epithelium has a limited role in secretion and absorption. So, the correct option is "only IV".
Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology cell division in embryo development division for growth and reproduction

The epithelial tissue present on the inner surface of bronchi oles and fallopian tubes is :

  1. Squamous

  2. Cuboidal

  3. Glandula

  4. Cilia ted
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bronchioles and fallopian tubes require ciliated epithelium to move particles or ova. Cilia beat rhythmically to transport mucus in respiratory tract and egg cells in the female reproductive tract.

Multiple choice tissues of animals tissues: plant and animal tissues animal tissues structure of living organisms biology cell division in embryo development division for growth and reproduction
Read the following statements regarding different types of animals tissues and select the incorrect ones.
(i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium
(ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large blood vessels.
(iii) Columnar epithelium present in gastric glands, intestinal glands and pancreatic lobules, has a secretory role and is called as glandular epithelium.
(iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels

  1. (i) and (iii)

  2. (ii) and (iii)

  3. (ii) and (iv)

  4. (i) and (iv)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Each fasciculus (bundle of muscle fibres) is surrounded by a connective tissue sheath called perimysium. Epithelial tissues arise from all the three primary germ layers of the embryo i.e., ectoderm, mesoderm and endoderm.

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

The nephridia which are found in a region of intestine are?

  1. Integumentary nephridia

  2. Pharyngeal nephridia

  3. Septal nephridia
  4. Both $(1)$ & $(3)$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In earthworms, integumentary nephridia are scattered throughout the body wall, including the region of the intestine, to perform excretory functions.

Multiple choice biology windows of knowledge human nose nose nose : the olfactory organ

The forward section of the nasal cavity within and above each nostril, is called as

  1. Conchae

  2. Vestibule

  3. Turbinates

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The forward section of the nasal cavity within and above each nostril is called as a vestibule. This region of the nose is lined by stratified squamous epithelium on which stiff hairs are present which prohibit entry of dust particles coming along with the inspired air. 

So, the correct answer is option B.