Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

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'.

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

Which of the following is correct regarding the path followed by sperms of male frog?

  1. Seminiferous tubules- Bidder's canal-Urinogenital duct-Vasa efferentia-Cloaca

  2. Seminiferous tubules-Urinogenital duct-Vasa efferentia-Bidder's canal-cloaca

  3. Seminiferous ubules-Vasa efferentia-Bidder's canal-Urinogenital duct-Cloaca

  4. Seminiferous tubules-Vasa efferentia-Urinogenital duct-Bidder's canal-Cloaca
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Where is jelly deposited as a covering on the egg of frog?

  1. In the oviduct

  2. In the water during fertilisation

  3. In the water after fertilisation

  4. In the ovary
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In frogs, the vitellin membrane and an adhesive jelly coating, also known as tertiary egg membrane, surround the eggs. When passing from the oviduct, it is added to the egg. This jelly enables the egg to be easily trained. The capable sperm readily fertilizes the egg as it has the location of the jelly receptor. The frog egg on the animal pole has yolk on the vegetable pole and nucleus.

Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system
Where does jelly get deposited as a covering on the egg of  frog?

  1. In the oviduct

  2. In the water during fertilization

  3. In water after fertilization

  4. In the ovary
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The female frog secretes jelly like substance that covers the egg. This coating is an oviducal secretion, that is secretion of the oviduct, that helps the eggs clump together, stay afloat and prevent being eaten away by predators.

So, the correct answer is 'In the oviduct'

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

Pairing of male and female frogs during breeding season is called

  1. Coitus

  2. Mating

  3. Copulation

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

In almost all frogs, egg fertilization happens outside the female's body instead of inside. The female releases her eggs and the male releases his sperm at the same time. In order to make sure that the sperm reach the eggs, the male and female get into a mating posture called amplexus. The male climbs onto the female's back and clasps his forelegs around her middle. 

So, the correct answer is 'Amplexus'.

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

In Alytes obstetricans,

  1. The female collects the fertilised eggs and hides the same in safe place

  2. The female after collecting the eggs, hides itself in a safe place

  3. The male collects eggs around its neck and hides itself

  4. The male collects eggs around its legs and hides itself
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Alytes obstetricans is a species of frog. They show high parental care. The female frog lay eggs in the water which the male fertilizes externally. Then it collects these fertilized eggs around its leg to protect them from predators and hide himself.
So the correct answer is 'The male collects eggs around its legs and hides itself'.
Multiple choice zoology frog introduction to reproduction reproductive system in frog frog - digestive system, circulatory system, excretory system and reproductive system

Hormone which induces metamorphosis in Frog is

  1. Ecdysone

  2. Thyroxine

  3. Juvenile hormone

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

In frog growth and metamorphosis are controlled by hormones synthesized by endocrine glands near the front of the body. Neurosecretory cells in an insect's brain secrete a hormone, the prothoracicotropic hormone that activates prothoracic glands, which secrete a second hormone, usually ecdysone, that induces ecdysis. PTTH also stimulates the corpora allata, a retrocerebral organ, to produce a juvenile hormone, which prevents the development of adult characteristics during ecdysis.

So the correct answer is 'Ecdysone'.

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

Albuminous layer around the egg of Frog is deposited by

  1. Ovarian follicles

  2. Ovary

  3. Oviduct

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

The frog egg is surrounded by an albuminous layer by an oviduct which later it comes into a uterus. The oviduct is a long coiled duct with the thick wall that is not connected with kidneys.  It consists some glands which secrete albumen that hardens ova. After the ovulation, the cilia of the oviducal funnel draws the coelomic fluid with ova which moves into the middle region with the help of cilia.

So the correct answer is 'Oviduct'.