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

Which of the following is correct for phragmo basidium?

  1. It is an entire basidium, which is fully reproductive.

  2. It is a septate basidium, which for all purposes is one structure.

  3. It is a septate basidium where only one cell is reproductive.

  4. It is a septate basidium where both cells are reproductive.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice

Which of the following statements is/are correct for Eucarpic fungi?

  1. Habitat is saprophytic and mycelium coenocytic.

  2. The reproductive organs arise from a part of thallus while the rest carries out somatic function.

  3. The entire thallus may be converted into reproductive structure so that somatic and reproductive phases do not occur in some individual.

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

Eucarpic fungi are those where only a portion of the thallus (vegetative body) is converted into reproductive structures, while the rest continues to perform somatic functions. This is the defining characteristic. Option C correctly states this. Option A describes habitat incorrectly (eucarpy is about reproduction, not habitat). Option B describes holocarpic fungi, not eucarpic.

Multiple choice

What are the sexual reproductive structures of algae?

  1. Zoospores and oogonia

  2. Aplanospores and antheridia

  3. Zoospores and aplanospores

  4. Zoospores and antheridia

  5. Oogonia and antheridia
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

During the sexual reproduction of algae, eggs are formed within the relatively unmodified vegetative cells called oogonia that function as female structures and the sperms are produced within special male reproductive structures called antheridia, where the gametes are fused to produce a diploid zygote.

Multiple choice

Which of the following statements is true about cnidarians that exhibit metagenesis?

  1. Polyps produce medusae asexually and medusae form the polyps sexually.

  2. Polyps produce medusae asexually as well as sexually.

  3. Medusae form the polyps sexually as well as asexually but polyps produce medusae only asexually.

  4. Polyps form the medusae sexually as well as asexually but medusae produce polyps only asexually.

  5. Medusae produce polyps asexually and polyps form the medusae sexually.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Those cnidarians which exist in both forms exhibit alternation of generation, known as Metagenesis, i.e. polyps produce medusae asexually and medusae form the polyps sexually (e.g. Obelia).

Multiple choice

Which of the following is not a characteristic of sexual reproduction?

  1. It involves the formation of gametes.

  2. It leads to variations in the offspring.

  3. It produces identical copies of parents.

  4. It promotes diversity of characteristics in the offspring.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Formation of gamete is essential for sexual reproduction as gametes from two different individuals fuse together for the production of a new individual. 

Multiple choice

Ball of cells-movement-specialisation is a sequence of events seen in

  1. fragmentation

  2. regeneration

  3. multiple fission

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

Ball of cells-movement-specialisation is a sequence of events seen in regeneration. The cells of cut part of the body divide rapidly to form a ball of cells. These cells move to their proper places where they become specialised to form different types of tissues.

Multiple choice

What is the method of reproduction in bees and wasps?

  1. Thelytoky parthenogenesis

  2. Arrhenotoky parthenogenesis

  3. Polyembryony

  4. Viviparity

  5. #
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In arrhenotoky parthenogenesis, males develop from unfertilised eggs. This method of reproduction is seen in bees and wasps.