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 respiration in living organisms breathing underwater respiration in other organisms respiration in organism

The protective covering on the gills are known as

  1. Operculum

  2. Gills

  3. Spiracles

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

Gills are the respiratory organs of the fishes. It helps in gaseous exchange by absorbing the dissolved oxygen in water. The gills are covered by a bony covering which is known as operculum. It is used for respiration and feeding. Gills have gills lamellae through which the blood flows opposite direction to the water. The dissolved oxygen from the water diffuses into the blood capillaries.  

So, the correct answer is option A.

Multiple choice zoology diseases and immunity body defense system drug-target interaction pharmaceutical products and drug action

Anatomic barrier to disease is 

  1. Skin

  2. Mucous membrane

  3. Mucus and cilia

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

The skin and the surface of mucous membranes act as an anatomical barrier and prevent the entry of microorganisms inside the body. The skin maintains the pH about 3 to 5 which retards the growth of microbes and mucous entraps foreign microorganisms and cilia propel microbes out of the body. Thus they prevent the entry of microorganisms. Hence, the correct answer is 'All of the above'.

Multiple choice zoology biodiversity and its classifications vertebrates characteristics of vertebrates classification of organisms

Vertebrates have

  1. Dorsal tubular nerve cord

  2. Ventrally situated heart

  3. Body cavity with alimentary canal

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

Vertebrates are the organisms which are characterized by the presence of the nerve cord. Vertebrates have the dorsal hollow nerve cord. This nerve cord develops into the central nervous system.
All vertebrates have a ventrally placed heart. The heart may be 2,3 or 4 chambered. Most of the organisms have closed circulatory system.
All vertebrates have a body cavity with alimentary canal. The alimentary canal starts at the mouth and ends at anus. 

Thus, the correct answer is option D. 

Multiple choice evolutionary changes in heart transportation - the circulatory system

The lymph hearts in frog are

  1. 1 pair

  2. 2 pairs

  3. 3 pairs

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

The lymph hearts in frog which carry lymph are two pairs located on dorsal side of frog's body. The front pair is situated below the shoulder blades. The posterior pair is on either side of a long, rod-like bone called as a urostyle. The anterior pair opens into the subclavian vein and the posterior pair into the femoral vein. The pair near the third vertebra pumps lymph into the jugular vein. The other pair at the end of the vertebral column pump lymph into the iliac vein in the legs.

Therefore, the correct answer is option B.

Multiple choice evolutionary changes in heart transportation - the circulatory system

The chambers in heart of fish are 

  1. 1 ventricle and 1 auricle

  2. 1 ventricle and 2 auricles

  3. 2 ventricles and 2 auricles

  4. 2 ventricles and 1 auricle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fish have 2 chambers, one atrium and one ventricle. Fish hearts draw in deoxygenated blood in a single atrium, and pump it out through a ventricle. This type of system is known as "single circulation type", as blood enters the heart, gets pumped through the gills and out to the body. Thus, the correct answer is option A.

Multiple choice evolutionary changes in heart transportation - the circulatory system

Papillary muscles are located in

  1. Ventricle of rabbit

  2. Dermis of mammalian skin

  3. Orbit of vertebrate eyes

  4. Pylorus of vertebrate stomach
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The muscles present in the ventricles of heart and get attached to atrioventricular valves via chordae tendinae are known as papillary muscles. Their contraction prevents the inversion of theses valves on systole. 
Multiple choice evolutionary changes in heart transportation - the circulatory system

Carotid labyrinth in frog is present on

  1. Brain

  2. Pulmocutaneous trunks

  3. Carotid artery

  4. Index finger of frog
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The amphibian carotid labyrinth is a characteristic maze-like vascular expansion at the bifurcation of the common carotid artery into the internal and external carotid arteries. 

So, the correct option is 'Carotid artery'.

Multiple choice how humans hear sound human ear study of sound sound physics

The thin stretched membrane at the end of the ear canal is 

  1. Pinna

  2. Cochlea

  3. Eardrum

  4. Stapes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Eardrum is the thin stretched membrane at the end of inner ear , which vibrates when sound wave strikes it .

Multiple choice how humans hear sound human ear study of sound sound physics

Which of the following is / are true?

  1. the inner ear consists of a cochlea, the semicircular canals and the auditory nerve

  2. the middle ear is an air filled cavity that consists of an ear drum and three tiny interconnected bones the hammer, anvil and stirrup

  3. the human ear consists of three basic parts - outer ear, middle ear and inner ear

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

All of the options are correct.

The inner ear consists of a cochlea, the semicircular canals and the auditory nerve.
The middle ear is an air filled cavity that consists of an ear drum and three tiny interconnected bones the hammer, anvil and stirrup.
The human ear consists of three basic parts - outer ear, middle ear and inner ear.

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Oviduct of frog can be called as

  1. Bidder's canal

  2. Urinogenital duct

  3. Mullerian duct

  4. Uterus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The oviducts present in amphibians are simple tubes which are lined with glands that produce mucus and jelly. Oviducts in male frogs are vestigial oviducts as they have no specific function and no role in reproduction. However, in female, oviduct responds to ovarian or female sex hormones by enlarging and acquiring a lumen. Oviducts carries egg to the cloaca. This posterior opening is the common exit for intestinal, urinary and reproductive tracts. The oviduct of the female is known as the rudimentary oviduct or Mullerian duct. This duct has no lumen and is very much reduced in size. Due to small size, it is difficult to locate these ducts. 

Thus, the correct answer is option C. 

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Vocal sacs are found in

  1. Male frog

  2. Female frog

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vocal sacs are prominent in a male frog. It is composed of flexible skin which easily expands or contracts to change the frequency of sound waves and helps in amplification. The sound produced is a call for mating. The presence or development of the vocal sac is one way of externally determining the sex of a frog in many species. The vocal sac is open to the mouth cavity of the frog, with two slits on either side of the tongue. To call, the frog inflates its lungs and shuts its nose and mouth. So, the correct answer is option A.

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

In humans, oviduct is formed by

  1. Wolffian duct

  2. Bidders canal

  3. Metanephric duct

  4. Mullerian duct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Paramesonephric ducts or Mullerian ducts are present on the embryo of both sexes. Only in females do they develop into reproductive organs. They degenerate in males. They differentiate to form the fallopian tubes, uterus, the uterine cervix, and the superior aspect of the vagina. 
So, the correct option is 'Mullerian duct'.
Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Pylangium in frog occurs in

  1. Conus arteriosus

  2. Sinus venosus

  3. Atrium

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

The truncus arteriosus is formed of a basal thick-walled conus arteriosus and a distal thin-walled ventral aorta. Its conus arteriosus part which is next to the ventricle is known as pylangium and the distal ventral part as synangium. Pylangium is a short tubular structure, while synangium is simply formed by the union of the basal parts of the arteries.

So the correct answer is 'Conus arteriosus'.

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Ureters act as urinogenital ducts in

  1. Human females

  2. Human males

  3. Male frogs

  4. Both male and female frogs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the frog, each kidney is composed of several structural and functional units called uriniferous tubule or nephrons. Two ureters emerge from the kidneys in the male frogs. The ureters act as a urinogenital duct which opens into the cloaca. The thin-walled urinary bladder is present ventral to the rectum which opens in the cloaca.

So the correct answer is(C) 'Male frogs'.

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Urinogenital duct of male frog opens into

  1. Rectum

  2. Cloaca

  3. Urinary bladder

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

In the male frog, the final digestion takes place in the intestine. Digested food is absorbed by the numerous finger-like folds in the inner wall of the intestine called villi and microvilli. The undigested solid waste moves into the rectum and passes out through cloaca. Hence the urinogenital duct of the male frog opens into the cloaca.

So the correct answer is 'Cloaca'.