Biology

Biological Reproduction

762 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 biology the world of microbes protista protozoa five kingdoms of living organisms

Macronucleus of Paramecium takes part in

  1. Transmission of hereditary characters

  2. Controlling normal cellular metabolism

  3. Production of variations and adaptability

  4. All the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Paramecium has two types of nucleus- micronucleus and macronucleus. Macronucleus perform common cellular functions and micronucleus takes part in sexual reproduction. 
Thus, the correct answer is option (B).
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 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

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)'.

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

Choose the correct statements from the options below with regard to sexual reproduction.
(i) Sexual reproduction does not always require two individuals.
(ii) Sexual reproduction generally involves gametic fusion.
(iii) Meiosis never occurs during sexual reproduction.
(iv) External fertilization is a rule during sexual reproduction.

  1. (i) and (iv)

  2. (i) and (ii)

  3. (ii) and (iii)

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

(i) sexual reproduction does not require two individuals because the fusion of two gametes released from the same plant can take place.

(ii) sexual reproduction is a process where gametic fusion is present because takes place between two gametes of different sexes 
(iii) meiosis occurs during sexual reproduction when the plant body is haploid or the gametes are diploid to produce the normal body.
(iv) external fertilization need not takes place in sexual reproduction. it can also be internal. eg: humans.
So, the correct option is '(i) and (ii)'.

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

Panmictic plant multiplies

  1. Sexually

  2. Asexually

  3. Parthenogenetically

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

The panmictic plant is a plant which has immense potential to breed. It undergoes random meeting which has no mating restrictions, neither genetic nor behavioural. The mating takes place by sexual reproduction. Due to mating by sexual reproduction, recombination takes place and eventually, leads to genetic variation. It causes the change in the genetic pool.

So, the correct answer is option A.

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

Which one of the following generates new genetic combinations leading to mutations

  1. Nucellar polyembryony

  2. Vegetative reproduction

  3. Parthenogenesis

  4. Sexual reproduction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Sexual reproduction is the reproduction which is caused by the fusion of gametes. The male and female gametes fuse to form the zygote. 
  • Due to the fusion of gametes the product of sexual reproduction generally generates new genetic combinations leading to variations. 
  • The organism develops from the zygote which has characters of both the parents. 
  • The genome of the offspring is formed by the recombination of genetic material so they are also known as recombinants. The recombination may cause the sudden heritable change in the gene pool which causes mutations.
So, the correct answer is option D.
Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following patterns of reproduction involves both the parents?

  1. Sexual reproduction

  2. Asexual reproduction

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sexual reproduction is a biological process that creates a new organism by combining the genetic material of two organisms, by the fusion of one gamete from each. Motile male gamete generally fertilizes with nonmotile female gamete in this process.
Thus, the correct answer is option A.

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

Which of the following patterns of reproduction involves the exchange of genetic material?

  1. Sexual reproduction

  2. Asexual reproduction

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sexual reproduction is a form of reproduction where the two reproductive gametes obtained from both the parents fuse together, to form a zygote. The gametes involve a large ovum (or egg) obtained from female and a male's smaller sperm. Each gamete contains half the number of chromosomes of normal cells.

So, the correct answer is option A.