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 excretion and osmoregulation micturition urine and urine formation urine formation

In mammals, the urinary bladder opens into 

  1. Uterus

  2. Urethra

  3. Vestibule

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

The final passageway for urine out of the bladder is through the thin-walled urethra. This tube runs from the base of the urinary bladder to the outside of the body. In the female, it is relatively short, connecting the bladder to the external urethral sphincter. In males, it is longer. It passes through the prostate gland and travels the length of the penis before reaching the external sphincter. 

So, the correct answer is option B.

Multiple choice chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

Which of the organs are most susceptible to hydrogen sulphide?

  1. Lungs

  2. Brain

  3. Eyes

  4. Legs
Reveal answer Fill a bubble to check yourself
A,B,C Correct answer
Explanation

Almost all organ systems are affected by hydrogen sulfide, but the most susceptible are those with exposed mucous membranes (e.g., eyes,  noise and throat) and those with high oxygen demands (e.g., lungs, brain).

Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The urinary opening is known as

  1. Urinary bladder

  2. Ureter

  3. Urethera

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The urinary opening is known as Urethra. It is a long tube which connects urinary bladder to the urinary meatus for removal of urine from the body. In males, urethra travels through the penis and meet the urethral meatus located at the tip of the penis. In females, urethra connects to the urethral meatus above the vagina.
So, the correct answer is 'Urethra'.
Multiple choice evs excretion in living organisms other systems in the body excretory system in human human excretory organs

The urethra is surrounded by sphincter muscles.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

True,


Opening of urinary bladder in controlled by sphincters made of circular muscles. These got relax during urine release.

$\bullet$ Two sphincters are present human (inner involuntary,outer voluntary )

$\bullet$ Prostatic urethra is absent in female,  $\therefore$ both sphincters are present in membranous urethra.

Multiple choice biology butterfly and honey bee life cycle of a butterfly metamorphosis in frogs the life of a butterfly types of reproduction in animals oviparous and viviparous

Structure which remains unchanged, during metamorphosis of frog's tadpole is

  1. Lung

  2. Heart

  3. Brain

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

The nervous system undergoes least changes during metamorphosis of frog's tadpole. Frog's nervous system once differentiated remains as such throughout life. However, the brain acquires its normal shape and size. 

Therefore, the correct answer is option C.

Multiple choice zoology locomotion and reproduction flagella other cell components single membrane bound organelles

In eukaryotic flagella, membrane bound central part is termed as?

  1. Shaft

  2. Central sheath

  3. Axonema

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

Inside cilia and flagella is a microtubule-based cytoskeleton called the axoneme. The axoneme of primary cilia typically has a ring of nine outer microtubule doublets (called a 9+0 axoneme), and the axoneme of a motile cilium has two central microtubules in addition to the nine outer doublets (called a 9+2 axoneme). The axonemal cytoskeleton acts as a scaffolding for various protein complexes and provides binding sites for molecular motor proteins such as kinesin II, that help carry proteins up and down the microtubules.


So the correct option is 'Axoneme'.

Multiple choice zoology locomotion and reproduction flagella other cell components single membrane bound organelles

Movement of cilia and flagella is due to presence of

  1. Central sheath

  2. Dynein

  3. Radial spokes

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

Dynein is a family of cytoskeletal motor proteins that move along microtubules in cells. They convert the chemical energy stored in ATP to mechnical work, and hence are involved in movement of cilia and flagella.

So, the correct option is 'Dyenin'.

Multiple choice biology transport in plant transport in the phloem of plants vascular tissue permanent tissue

End walls of tracheids and Vessels respectively are

  1. Pitted and perforated

  2. Perforated and pitted

  3. Both perforated

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

Tracheids and vessels both have pits but vessels have an opening which connects single individual vessel elements to form a single tube. These end openings are called perforation plates. Tracheids are imperforate, have pit pairs on common walls.

So, the correct answer is 'Pitted and perforated'

Multiple choice botany internal structure of root, stem and leaf internal structure of monocot leaf internal structure of dicot leaf internal structure of leaf (dicot and monocot)

Spongy parenchyma is arranged in

  1. One layer

  2. Loosely arranged

  3. Compactly arranged

  4. Regularly arranged around large cavities
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The parenchyma with loosely arranged cells, present in the mesophyll of leaves is called spongy parenchyma.

So, the correct option is ‘Loosely arranged’

Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

The clitellum of Pheretima is present in segments 

  1. 12,13 and 14

  2. 13, 14 and 15

  3. 14, 15 and 16

  4. 15, 16 and 17
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • The clitellum is a thickened glandular and non-segmented section of the body wall located in 14, 15 and 16 segment of the earthworm that secretes a viscid sac in which the eggs are deposited.
  • The clitellum is part of the reproductive system of earthworm. It also secretes a viscous fluid to form a cocoon for it's eggs. In earthworms the clitellum can only be seen when the worm is sexually mature.
So, the correct option is '14, 15 and 16'.
Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Gustatoreceptors of Pheretima are present

  1. In the buccal cavity

  2. In the prostomium

  3. In the peristomium

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

Gustoreceptors are found in the epithelial of the buccal cavity,these cells have sensory hair like processes and their nuclei lie below the middle part of the cells. These receptors severs to smell (olfactory receptors) for taste (gustoreceptors). Earthworms can smell different types of decaying food. Hence gustoreceptors are present in the buccal cavity. 

So the correct answer is 'In the buccal cavity'.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Perineum is the area in the female reproductive system that lies.

  1. Above the external genitalia

  2. Below the external genitalia

  3. Sides of external genitalia

  4. Centre of genitalia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the female reproductive system, the perineum is the area that lies between the vaginal opening and the anus. It represents the most inferior part of the pelvic outlet. Thus it lies above the external genitalia.

So the correct option is 'Above the external genitalia'.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

The female equivalent of the glans of the penis is

  1. Clitoris

  2. Hymen

  3. Vestibule

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

The glans is a vascular structure of the clitoris. The clitoris is composed of multiple parts: the glans, the clitoral body, and the paired crura and vestibular bulbs. The glans clitoris is the name of the part that most people call the “clitoris.” It is the external part of the clitoris, about the size of a pea, and is located above the urethra. Because the glans is the most highly innervated area of the clitoris, it’s extremely sensitive to touch.

So the correct option is 'clitoris'.