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 evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

In human being, sphincter of Oddi is situated in

  1. Common bile duct

  2. Ampulla of vater

  3. Main pancreatic duct

  4. Common hepatic duct
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Various smooth muscle sphincters regulate the flow of bile and pancreatic juice through the ampulla: the sphincter of the pancreatic duct, the sphincter of the bile duct, and the hepatopancreatic sphincter (Sphincter of Oddi).The sphincter of Oddi controls the introduction of bile and pancreatic secretions into the duodenum, as well as preventing the entry of duodenal contents into the ampulla.

Multiple choice evs - i busy at work - our internal organs human lymphatic system lymph and its function lymph and tissue fluid

'Crypts of Lieberkuhn' are found in

  1. Gall bladder

  2. Liver

  3. Pancreas

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

Folds of small intestine are conical shaped villi.  Small slit like space is found at the base of villi. These spaces are called crypts of Lieberkuhn. The crypts of Leiberkuhn secrete succus entericus or intestinal juice. The succus entericus mainly contains water (99%) and various digestive enzymes (1%). 

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Ureters act as Wolffian or urinogenital duct in 

  1. Both male and female frog

  2. Male frog

  3. Human male

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

Wolffian duct is also called as archinephric duct, is a pair of tubes that carry urine from primitive or embryonic kidneys to the exterior or to a primitive bladder. 

In amphibians, the reproductive system encroaches on the Wolffian duct. In some species the duct carries both urine and sperm, but most amphibians develop a separate tube to carry urine from the kidney.
Therefore, the correct answer is option B.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

In the urinogenital organs of rabbit, which one of following part is present in male but not in female?

  1. Urethra

  2. Fallopian tube

  3. Vagina

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

The ductus deferens, also known as the vas deferens, is a tiny muscular tube in the male reproductive system that carries sperm from the epididymis to the ejaculatory duct. 

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Ciliated funnels found on the ventral side of kidney in Frog are

  1. Ostia

  2. Nephrostomes

  3. Bidders organs

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

The excretory system of frog consists of a pair of kidney, ureters, urinary bladder and cloaca. On the ventral surface of the kidney in the frog, there are ciliated funnels present called as nephrostome. The nephrostome is internally lined with cilia, its function is to push water, metabolic wastes and other substances into metanephridium (Kidney).

So, the correct answer is 'Nephrostomes'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Urinary bladder is not found in 

  1. Snakes

  2. Crocodiles

  3. Birds

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

Birds and reptiles urinate in a way to conserve their water. Unlike mammals, which excrete waste fluid as urine and solid waste as faeces, birds and reptiles mix both liquid waste and solid waste into the semi-solid paste (nitrogen containing waste) formed from the breakdown of proteins. Hence snakes, crocodiles, birds and most lizards lack a urinary bladder.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Dense pelage is characteristic of animal inhabiting (heavy hairy body)

  1. Cold Climate

  2. Warm climate

  3. Tropical climate

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

The term pelage is used to refer to the body hair of an animal as a complete coat. Its principal function is thermoregulation, it maintains a layer of dry air next to the skin and repels water, thus providing thermal insulation.

Therefore, the correct answer is option A.

Multiple choice zoology menustral cycle in human parturition and lactation pregnancy and birth fertilization and post fertilization in humans

Milk secreted from the cells of alveoli of mammary lobes reaches nipple through lactiferous duct (L), mammary duct(M), mammary tubule (T) and mammary ampulla (A) in the following order

  1. TMAL

  2. MTLA

  3. MTAL

  4. ATML
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Mammary glands or breasts are modified sweat glands that lie over the pectoral muscles. Each breast has a broad multiporous tip called nipple for the release of milk. A circular pigmented area called areola lies below it. Each breast contains 15-20 glandular lobes separated from one another by dense connective tissue and adipose tissue. Each lobe is further made of many lobules having glandular or secretory alveoli.
  • The cells of alveoli produce milk which is stored in the cavities or lumens of alveoli. Alveoli open into mammary tubules and then into mammary ducts. Mammary ducts form a mammary ampulla from which a lactiferous duct develops. Each lobe produces a separate lactiferous duct. The various lactiferous ducts open at the nipple by separate pores.
So, the correct answer is 'TMAL'.

Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

The head of the epididymis at the head of the testis is called ____________.

  1. Cauda epididymis

  2. Vas deferens

  3. Caput epididymis

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

The epididymis is a mass of long narrow closely coiled tubule which lies along the inner side of each testis. Coiling forms three parts - 

Upper - caput epididymis or head, 
Middle - corpus epididymis or body, and 
Lower - cauda epididymis or tail.

Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

The testes are located within the

  1. Penis

  2. Scrotum

  3. Ureter

  4. Urinary bladder
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The scrotum is a sack of skin that hangs from the body at the front of the pelvis, between the legs. It sits next to the upper thighs, just below the penis. The scrotum contains the testicles, and its function is to maintain the temperature of testicles lower than the body temperature, so as to facilitate spermatogenesis.
So, the correct option is 'Scrotum'
Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

How many structures are found in the abdominal cavity of males among the following structures? Epididymis, Rete testis, Ampulla of vas deferens, Fallopian tube, Prostate gland, Seminal vesicle, Round ligament, Ureter, Membranous urethra

  1. $2$
  2. $3$
  3. $4$
  4. $5$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
In males, the testes are extra-abdominal in position. The structure within the testes are not abdominal. So the rest structures are present in the abdominal cavity of the male like vas deferens, prostate gland, seminal vesicle, and membranous urethra.
So the correct answer is '4'.
Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

Which among the following part of male reproductive system is not considered intratesticular genital duct ?

  1. Tubuli recti

  2. Rete testis

  3. Ductuli efferentes

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

The intratesticular genital duct includes the parts like Tubuli recti, Rete testes and Ductili efferentes. 

Epididymis is a long tube connects the testicles to the vas deferens. It is formed from the ductili efferentes, but it is not a part of the intratesticular genital duct.

Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

Which one is primary sex organ?

  1. Penis

  2. Scrotum

  3. Testis

  4. Prostrate
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The reproductive organs in each gender include a primary sex organ and several secondary sex organs. 
  • The primary sex organ is the one that produces the gametes of that sex i.e. the sperm or the ova. 
  • So, in the male, the primary sex organ is testis. In the female, the primary sex organ is the ovary.