Reproduction in Organisms Additional Practice Test

12th Standard Zoology — Reproduction in Organisms: Additional Online Practice Test

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What is another term used to describe blastogenic reproduction in organisms?

A.Sexual reproduction B.Asexual reproduction C.Parthenogenesis D.Conjugation

Which of the following organisms exhibits longitudinal binary fission as a mode of asexual reproduction?

A.Amoeba B.Euglena C.Hydra D.Aurelia

The process of apolysis in Taenia solium is highly significant because it helps to:

A.Regenerate lost posterior body segments B.Transfer developed embryos to a secondary host C.Initiate the formation of new male gametes D.Trigger binary fission under unfavorable conditions

Regeneration was first studied in Hydra in the year 1740 by which of the following scientists?

A.Charles Bonnet B.Abraham Trembley C.Robert Holley D.Ian Wilmut

The replacement of severed body parts, such as the tail of a wall lizard or the arm of a starfish, is classified as:

A.Morphallaxis regeneration B.Reparative epimorphosis C.Restorative epimorphosis D.Blastogenic regeneration

Which of the following describes hologamy as seen in lower organisms like Trichonympha?

A.Union of young individuals immediately after mitosis B.Fusion of morphological and physiologically identical gametes C.Fusion of small-sized and morphologically different gametes D.Entire mature organisms behaving as gametes and fusing

The sexual union of young individuals produced immediately after mitotic division of the adult parent cell is called:

A.Paedogamy B.Hologamy C.Merogamy D.Autogamy

Which of the following organisms is a classic example of isogamy, where morphologically and physiologically identical gametes fuse?

A.Trichonympha B.Monocystis C.Actinophrys D.Planaria

Which of the following animals is classified as a continuous breeder, continuing to breed throughout their period of sexual maturity?

A.Frog B.Lizard C.Rabbit D.Deer

Q10

In which type of natural parthenogenesis are only females produced from unfertilized eggs?

A.Arrhenotoky B.Thelytoky C.Amphitoky D.Paedogenesis

Q11

In Aphis gossypii, unfertilized eggs can develop into individuals of either sex. This phenomenon is known as:

A.Thelytoky B.Arrhenotoky C.Amphitoky D.Paedogenesis

Q12

In complete parthenogenesis, which of the following statements is true regarding the population?

A.The population consists of diploid males and haploid females. B.There are no male organisms, and the species is represented by females only. C.Both sexual reproduction and parthenogenesis occur alternately. D.Unfertilized eggs are artificially induced to develop by chemical stimuli.

Q13

Paedogenetic parthenogenesis is a unique reproductive phenomenon where larvae produce a new generation of larvae. This occurs in which of the following?

A.Honeybees B.Annelids C.Solenobia D.Redia larvae of liver fluke

Q14

Which of the following organisms' unfertilized eggs can be induced to undergo development via physical or chemical stimuli in artificial parthenogenesis?

A.Honeybees B.Sea urchins C.Aphis gossypii D.Solenobia

Q15

During endogenous budding in sponges, internal buds are formed within the parent body. These specialized structures are called:

A.Ephyrae B.Gemmules C.Gravid proglottids D.Pseudopodiospores

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This free online practice test covers Reproduction in Organisms from the 12th Standard Zoology (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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