Tag: introduction to reproduction

Questions Related to introduction to reproduction

Pairing of male and female frogs during breeding season is called

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

  1. Coitus

  2. Mating

  3. Copulation

  4. Amplexus

Show answer
Correct Option: D
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'.

In Alytes obstetricans,

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

  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

Show answer
Correct Option: D
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'.

Hormone which induces metamorphosis in Frog is

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

  1. Ecdysone

  2. Thyroxine

  3. Juvenile hormone

  4. Melatonin

Show answer
Correct Option: A
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'.

Albuminous layer around the egg of Frog is deposited by

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

  1. Ovarian follicles

  2. Ovary

  3. Oviduct

  4. Coelom

Show answer
Correct Option: C
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'.

In Suriname toad, eggs are taken care by 

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

  1. Male

  2. Female

  3. Both A and B

  4. None of the above

Show answer
Correct Option: B
Explanation:
The Suriname toad is morphologically flat and show remarkable parental care. The eggs are taken care by female toad. The female released eggs which get embedded in the skin on her back by the movement of male toad.
So the correct option is 'Female'.

Mushroom gland is part of

zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. Male reproductive system of Cockroach

  2. Female reproductive system of Cockroach

  3. Male reproductive system of Rabbit

  4. Female reproductive system of Rabbit

Show answer
Correct Option: A
Explanation:

The mushroom gland is a large accessory male reproductive gland in the cockroach, which is whitish in colour and situated at the junction of vasa deferentia with the ejaculatory duct. It has a mass of glandular tubules of three kinds, the peripheral long tubules or utriculi majors, the central tubules are small short tubules or utriculi breviores and behind the short central tubules are some short but more bulbous tubules forming the seminal vesicles filled with sperms. 

So, the correct answer is 'Male reproductive system of Cockroach'.

In the female cockroach, the anterior wall, roof and floor of genital pouch are formed respectively by the following abdominal sterna of

zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. 7th, 8th and 9th segments

  2. 8th, 7th and 9th segments

  3. 9th, 8th an 7th segments

  4. 8th, 9th and 7th segments

Show answer
Correct Option: D
Explanation:

Genital or brood pouch is a large boat-shaped structure whose floor is formed by the 7th sternite, roof and sides are formed by the 8th and 9th sternites. The genital pouch can be divided into a genital chamber into which vagina opens and an oothecal chamber where oothecae are formed. The genital chamber also receives the accessory reproductive glands. 

So, the correct answer is '8th, 9th and 7th segments'.

Collateral glands of cockroach help in?

zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. Fertilization

  2. Formation of ootheca

  3. Copulation

  4. Formation of oothecal chamber

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Correct Option: A

Which of the following structures does not open into the genital chamber of female cockroaches?

zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. A single median oviduct

  2. Spermatheca

  3. A pair of anal cerci

  4. A pair of collateral glands

Show answer
Correct Option: A
Explanation:

The genital pouch of female cockroach can be divided into two parts. The anterior smaller part containing the openings of female gonopore, pores of spermathecae and collateral glands is called genital chamber, while the larger posterior part in which ootheca is formed is called oothecal chamber or vestibulum. Oviduct doesn't open into the genital chamber.

So, the correct option is 'A single median oviduct'.

Glands whose secretions are responsible for formation of ootheca in female cockroach are?

zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. Collateral glands

  2. Seminal vesicles

  3. Phallic gland

  4. Conglobate glands

Show answer
Correct Option: A