Biology

Animal Tissue and Anatomy

1,715 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 biology for the continuity of generation reproductive systems different stages of growth reproductive system in humans

Spot the odd one out from the following structures with reference to the male reproductive system.

  1. Rete testis

  2. Epididymis

  3. Vasa efferentia

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

Females have two oviducts (or Fallopian tubes). Each oviduct has three regions, infundibulum, ampulla and isthmus. Isthmus is the narrow part closest to uterus, while infundibulum is the first part of oviduct that is encountered by released ova.

Multiple choice biology for the continuity of generation reproductive systems different stages of growth reproductive system in humans

Given below are the three statements each with two blanks. Select the option which correctly fills up the blank in any two statements. (A) Each seminiferous tubule is lined on Its inside by two types of cells called (i) and (ii) .
(B) The seminiferous tubules open into the  (i)  through  (ii).
(C) The enlarged end of penis called the   (i)   is covered by a loose fold of skin called the   (ii)  

  1. (A)-(i)spermatogonia, (ii) follicular cells

    (B)-(i) vas deferens, (ii) urethral meatus

  2. (B)-(i) vasa efferentia, (ii) rete testis

    (C)-(i) glans penis, (ii) foreskin

  3. (A)-(i) spermatogonia, (ii) Sertoli cells

    (C)-(i) urethral meatus, (ii) scrotum

  4. (A)-(i) spermatocytes, (ii) oogonia

    (B)-(i) rete testis, (ii) vasa efferentia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The seminiferous tubule is present in the testicular lobule and is highly coiled and produces sperms. The seminiferous tubule opens into the vasa efferentia (small ducts) through the rete testis (a network of interconnecting tubules where the straight seminiferous tubules empty). The enlarged part of the penis or the male genitalia is called the glans penis or head of the penis (sensitive bulbous structure at the distal end of the human penis) and is covered by a foreskin (prepuce) a double-layered fold of smooth muscle tissue, blood vessels etc, to protect the glans penis and urinary meatus. 

So, the correct option  is, (B)-(i) vasa efferentia, (ii) rete testis (C)-(i) glans penis, (ii) foreskin.

Multiple choice hepatic portal system components of the circulatory system transport in animals the circulatory system biology

Both hepatic and renal portal systems are found in

  1. Fishes, amphibians, reptiles

  2. Amphibians, reptiles, mammals

  3. Reptiles, aves, mammals

  4. Cyclotomes, fishes, amphibians
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hepatic (liver) portal system collects blood from the intestine and passes it to the liver and renal (kidney) portal system collects blood from renal glomeruli and passes it to peritubular plexus (the blood capillaries that surrounds the proximal and distal convoluted tubules). Both hepatic and renal portal systems are found in fishes, amphibians and reptiles. In mammals only hepatic portal system is present.

So, the correct answer is 'Fishes, amphibians and reptiles'.

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 tissue level of organisation neural tissue structure of neuron nervous tissues

Function of nerves tissue is?

  1. Excitability

  2. Sensitivity

  3. Elasticity

  4. Contraction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Nervous tissues are the class of specialized tissues majorly found in the central and peripheral nervous system. 
  • These tissues are made up of neurons and their supporting cells called neuroglia. 
  • These tissues are responsible for the control and coordination throughout the body. 
  • The nervous tissues or neurons are excitable cells that work on the basis of action potentials.

So, the correct answer is 'Excitability'.

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

Which of the following cells are found in areolar tissue?

  1. Mast cells

  2. Plasma cells

  3. Histiocytes

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

Areolar Tissue is a common form of loose connective tissue. Areolar tissue is found in many locations around the body.

Areolar Tissue is loose connective tissue that consists of a meshwork of collagen, elastic tissue, and reticular fibres - with many connective tissue cells in between the meshwork of fibres.
The fibres that form the mesh structure of areolar tissue include:

Collagen fibres, elastic fibres, reticular fibres
The different types of cells embedded within the areolar tissue include:
Fibroblasts, plasma cells, adipocytes, mast cells and macrophages (The histiocyte is a tissue macrophage). 

So the answer 'All of these'. 

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.