Biology

Biological Reproduction

806 Questions

Biological reproduction encompasses processes like asexual and sexual reproduction, alternation of generations, and specific mechanisms in plants and fungi. This topic is fundamental for biology paper preparation in various competitive exams. Practice these questions to solidify your understanding.

Asexual reproduction structuresPlant and fungi life cyclesCloning and fertilizationReproductive terminology

Biological Reproduction Questions

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Ctenophores exhibits

  1. Bioluminescence

  2. Metagenesis

  3. Parthenogenesis

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

Ctenophores, also called the comb-jellies, exhibit bioluminescence. The enzyme called photoprotein is present in them in which luciferin is combined with oxygen. When the calcium changes the shape of the ptotoprotein, light is given off.

Hence, the correct answer is 'Bioluminescence'  

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Cycas is

  1. Monoecious

  2. Bisexual

  3. Dioecious

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

Cycas is dioecious in nature since it produces micro and megaspores in the micro and megasporangia. The micro and megasporangia are born on microsporophyll and megasporophyll respectively.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

What is not connected with reproduction of protozoans?

  1. Cryptogamy

  2. Schizogamy

  3. Autogamy

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

Schizogeny is the method of reproduction in which production of a sexual individual from an asexual form usually by fission.

Cryptogamy involves new individuals with spores without the formation of seeds or flowers.
Autogamy is a type of reproduction in which the production of offspring is done by the fusion of two gametes from the same individual.
Conjugation is the process of reproduction in which the genetic material is transferred between two cells by a direct cell to cell contact.
So the correct answer is yes 'Schizogamy'.

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Kingdom protista includes

  1. Life cycle showing sporic meiosis

  2. Life cycle showing zygotic meiosis

  3. Life cycle showing gametic meiosis

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Protists exhibit diverse life cycles, including both zygotic meiosis (common in many algae and fungi-like protists) and gametic meiosis (common in many ciliates and animals).

Multiple choice biology the world of microbes protista protozoa five kingdoms of living organisms

Sex first originated in 

  1. Protistans

  2. Simple algae

  3. Angiosperms

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

(A)Protista are simple eukaryotic organisms that cannot be classified as plant, animal or fungus. They are mostly unicellular, but some are multicellular. They are first originated.

(B)Algae are group of photosynthetic organisms. They may be unicellular or multicellular. They are found in swampy areas, ponds, ditches, etc.They lack distinct organs. They were evolved after protista.
(C)Angiosperms are the vascular living plants which have true roots, stems, and leaves. They are flowering plants. Their reproductive structures are flowers.
So, the correct option is 'Both (1) and (2)'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

  1. Mushroom, Green plants, Amoeba

  2. Yeast, Mushroom, Bread mould

  3. Paramecium, Amoeba, Cuscuta

  4. Cuscuta, Lice, Tapeworm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The green plant is photoautotrophs that synthesise food material from simple inorganic compounds like water and carbon dioxide in the presence of sunlight. 
Nutrition in Amoeba and Paramecium is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. Cuscuta, lice, and tapeworm are parasites with the heterotrophic nutritional mode. Yeast, mushroom and bread mould have a saprophytic mode of nutrition which is chemoheterotrophic in nature. They break down complex organic substances by secreting digestive enzymes outside their body and absorb simple molecules as nutrients. So, the correct answer is option B.  

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Select the correct example of asexual mode of reproduction?

  1. Fragmentation

  2. Budding

  3. Binary fission

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

  • There are different methods of asexual reproduction. 
  • They include binary fission, fragmentation, and budding. 
  • Binary fission occurs when a parent cell splits into two identical daughter cells of the same size.
  • Fragmentation occurs when a parent organism breaks into fragments or pieces, and each fragment develops into a new organism. Starfish, like the one in Figure below, reproduce this way.
  • Budding occurs when a parent cell forms a bubble-like bud. The bud stays attached to the parent cell while it grows and develops.
So, the correct answer is 'All of the above'

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Damaged parts and organs can be repaired by 

  1. Reparative regeneration

  2. Restorative regeneration

  3. Physiological regeneration

  4. Heteromorphic regeneration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The ability of the multicellular organism to repair certain damaged cells present in the Damaged parts and organs is called Reparative regeneration.
  • Reparative regeneration is observed in both invertebrates and vertebrates.
  • Hence Damaged parts and organs can be repaired by Reparative regeneration.
  • So, the correct answer is 'Reparative regeneration'.
Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Hydra is broken into pieces

  1. Hydra will die

  2. Hydra will undergo sexual reproduction

  3. Some fragments will form complete Hydra

  4. Every fragment will, grow into complete Hydra
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The reconstruction of an entire animal from a small fragment by reorganizing the existing cells is called Morphallaxis. The regenerated animal is far smaller than the original one after the completion of the process. It grows to attain the normal size. eg: Hydra.

So, the correct option is ‘Every fragment will grow into complete Hydra’.

Multiple choice biology reproduction in living organisms regeneration asexual modes of reproduction reproduction in animals

Regeneration is the same as reproduction.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Regeneration is the process of renewal, restoration and growth that makes genomes, cells , organisms and ecosystems.
While reproduction is the biological process by which new individual organism, i.e., offspring are produced form their parents.
Thus, the correct answer is option (B), 'False'.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Asexual reproduction is the _____ method of reproduction in organisms that have a relatively simple organisation like _______ and _______.
Fill in the blank in the above statement.

  1. Rare, plant, bacteria

  2. Common, plant, bacteria

  3. Common, algae, fungi

  4. Rare, algae, fungi
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Asexual reproduction is a common method of reproduction by which offspring arise from a single parent and inherit the genes of that parent only. An important form of fission (a type of asexual reproduction) is binary fission, where the parent organism is replaced by two daughter organisms. Only prokaryotes (the archaea and the bacteria) reproduce asexually through binary fission. Eukaryotes (unicellular fungi) may reproduce in a functionally similar manner by mitosis. Multiple fission at the cellular level occurs in many protists, e.g. algae. The nucleus of the parent cell divides several times by mitosis, producing several nuclei. The cytoplasm then separates, creating multiple daughter cells.

Thus, the correct option is 'Common, algae, fungi.'

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following is not correct regarding sexual reproduction?

  1. It is usually biparental

  2. Gametes are always formed

  3. It is a slow process

  4. It involves only mitosis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sexual reproduction involves both meiosis and mitosis. Meiosis occurs at the time of gamete formation. Repeated mitotic divisions occur in the zygote to form an embryo.

So, the correct answer is 'It involves only mitosis'.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Asexual method of reproduction by binary fission is common to which of the following?
(i) Some eukaryotes
(ii) All eukaryotes
(iii) Some prokaryotes
(iv) All prokaryotes

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (i) and (iv)

  4. (iii) and (iv)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Binary fission is a method of separating a body into two new bodies. In this process, an organism duplicates its genetic material and divides into two parts where every new organism receives one copy of DNA. 

This type of asexual reproduction and the most common form of reproduction in prokaryotes and some single-celled eukaryotes.  
 
So the answer is '(i) and (iv)'.