Question:

Which form of reproduction is correctly matched?

Updated On: Aug 1, 2022
  • Euglena $\to$ transverse binary fission
  • Paramecium $\to$ longitudinal binary fission
  • Amoeba $\to$ multiple fission
  • Plasmodium $\to$ binary fission
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The Correct Option is C

Solution and Explanation

Reproduction is an essential feature of all living organisms. It is the process by which an individual multiplies in number by producing more individuals of its own type. It maintains the continuity of race by replacing old dying members and helps in increasing the total number o f individuals. Amoeba proteus does not reproduce sexually. The reproduction is essentially asexually and takes place by various methods such as binary fission, multiple fission and sporulation. Binary fission is the most common mode of reproduction. It results in the division of the parent Amoeba into two daughter amoebea. Amoeba reproduces by multiple fission during adverse environmental conditions. The animals secretes a three-layered protective, chitinous cyst around it and becomes inactive. Inside the cyst, the nucleus repeatedly divides to form several daughter nuclei, which arrange themselves near the periphery. When favourable conditions arrive, the cyst breaks off liberating the young pseudopodiospores, each with fine pseudopodia. They feed and grow rapidly to become adults and lead an independent life. Form of reproduction present in the following animals are - Eughna - Longitudinal binary fission Paramecium - Transverse binary fission Plasmodium - Multiple fission
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Concepts Used:

Human Reproduction

Reproduction in human beings involves the fusion of male and female gametes that produces in their reproductive system.

Male Reproductive System:

The male reproductive system comprises:

  • Testicles (testes): A pair of oval-shaped organs masked in a pouch known as the scrotum. They manage the production of sperms and the male hormone testosterone.
  • Scrotum: It is a sac-like organ that hangs under the penis and behind it. It is the house of the testes, or testicles, and maintains a temperature that is needed for the production of sperm by it.
  • Vas deferens: The sperms produced in testes are stored in a tube known as the epididymis. Here the sperms get matured and pass to the urethra via the muscular tube known as vas deferens.
  • Accessory glands: This includes three glands, namely the prostate gland, seminal vesicles, and Cowper’s gland. The secretions from the mentioned three glands mix to form a fluid known as semen. Semen nourishes the sperm, raises the volume, and helps in lubrication.
  • Penis: The penis is a cylindrical tube that serves as both an excretory organ, and a reproductive organ. It transfers sperms into the vagina during sexual intercourse.

Female Reproductive System:

The female reproductive system is active before, during, and after fertilization as well. It comprises the following parts:

  • A pair of ovaries: A pair of ovaries produce and stores ovum in them. They also produce a female hormone known to be estrogen.
  • Fallopian tubes (Oviducts): They are the area of fertilization. They connect both the ovaries with the uterus.
  • Uterus: Uterus is the place of development for the embryo.
  • Vagina: The part that connects the cervix to the external female body parts is called a vagina. It is the passage for the penis during coitus as well as a fetus during transfer.