Biology

Human Reproductive System

751 Questions

The human reproductive system covers the anatomy of reproductive organs, gamete production, fertilization processes, and reproductive technologies. This is a highly scoring area in biology sections of competitive exams. Use these questions to practice key concepts.

Fertilization processGamete productionReproductive organ functionsAssisted reproductive technology

Human Reproductive System Questions

Multiple choice maths mid-point and its converse proving the mid-point theorem the mid-point theorem mid point theorem

A cross section at the midpoint of the middle piece of a human sperm will show

  1. Centriole, mitochondria and 9 +2 arrangement of microtubules.

  2. Centriole and mitochondria

  3. Mitochondria and 9+2 arrangement of microtubules.

  4. 9+2 arrangement of microtubules only.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The middle piece is the tubular structure in which mitochondria are spirally arranged and it also has the beginning part of the flagellum. The sperm tail or the flagellum is based upon unique 9+2 arrangement. This arrangement refers to the nine peripheral, symmetrically arranged microtubule doublets.
Thus, the cross-section of the middle piece of sperm will show mitochondria and 9+2 arrangement of microtubules.
Hence, the correct answer is option (C), 'Mitochondria and 9+2 arrangement of microtubules'.

Multiple choice biology cell-the basic unit of life number and shape of cells unicellular and multicellular organisms cell parameters diversity and classification in animals

Human egg is larger than human sperm because it has

  1. Larger nucleus.

  2. More membranes.

  3. Core cytoplasm.

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

Human sperm consists of a head and tail, the head carrying the genetic material and tail has mitochondria which derives the movement of sperm. It is very small in size (0.05mm) and a drop of serum contains millions of sperms. The human egg consists of genetic material along with core cytoplasm surrounding nucleus that has all the cellular components such as ribosomes, RNAs which are essential for protein synthesis and which ultimately gives rise to the whole body of an organism. Human egg measures 2cm against human sperm 0.05mm.

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

The Bidder's canal in frog help to pass out

  1. Ova

  2. Sperms

  3. Both A and B

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

Bidder's canal is present in male frogs. Vasa-efferentia opens into the Bidder's canal and the Bidder's canal is connected to longitudinal collecting tubules by means of a number of transverse collecting ducts and helps in the passing of the sperms. So, the correct answer is option B.

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

Vasa efferentia in frog carry sperms to 

  1. Male cloaca

  2. Female cloaca

  3. Mullerian duct

  4. Bidder's canal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In all terrestrial vertebrates except the placental mammals, the genital ducts and excretory ducts, open into the cloaca. In mammals, however, the cloaca becomes separate into a dorsal part, which conveys the faeces and a ventral part, which receives excretory and genital products. The sperm cells from seminiferous tubules pass into Bidder's canal through vasa efferentia. The Bidder's canal runs along the length of each kidney near its inner side. Thus, vasa efferentia conduct mature sperm from testis to the ureter.

Therefore, the correct answer is option D.

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

Eggs laid by female frog are protected by :

  1. Scrotal sae

  2. Hard shell

  3. Layer of jelly

  4. Exoskeleton

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Eggs laid by female frogs are protected by Gelatinous material that prevents desiccation of the developing embryo.

So, the correct option is 'layer of jelly'.

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

When a sperm enters an egg of frog

  1. First polar body is formed

  2. First meiotic division occurs

  3. Second meiotic division occurs

  4. Fertilization process is completed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a sperm enters the cytoplasm of the oocyte, there is a cortical reaction, which prevents other sperms from fertilising that egg. The oocyte now (after sperm enters the oocyte) undergoes second meiotic division producing haploid ovum and releases a polar body.
So, 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

Oviduct of female frog has a swelling or ovisac for storing

  1. Sperms

  2. Ova

  3. Albumen

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

In female frog, on each side of the ovary there is a long much coiled whitish glandular tube called oviduct or Mullerian duct. At the anterior end of each oviduct there is an oviducal funnel with a wide aperture called ostium.. The posterior part of the oviduct dilates to form a thin walled ciliated ovisac , where the ova are stored and agglutinated. So, the correct answer is 'Ova'.

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

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 biology the age of adolescence changes in body during adolescence hormone during puberty role of hormones in reproduction

State whether the following statements are true or false .
In primates, the condition of the failure of testes to descend in the scrotal sac is known as cryptorchidism.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Cryptorchidism occurs when one or both of the testicles do not descend into the scrotum while the fetus is developing. Undescended testicles may be palpable or unpalpable. Palpable means that a doctor will be able to feel the undescended testicle during a physical examination. About 80 per cent of undescended testicles is palpable. The testicle is usually located at the end of the inguinal canal, a channel that carries the spermatic cord towards the penis and scrotum.
So the correct option is 'True'.