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

Which of the following statements is/are false?

a. All the offsprings produced by one parent as a result of asexual reproduction are usually genetically identical. b. The basis of asexual reproduction is mitosis that is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus. c. The transfer of pollen grains from the stigma of a carpel to the anther of a stamen is called pollination.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option.

Multiple choice

Which of the following statements is/are false?

a. Flowering plants reproduce by asexual reproduction methods. b. The sex organ of a plant is in its flowers. c. The function of a flower is to make male and female gametes and to ensure that fertilisation will take place to make new seeds for the reproduction of the plant.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as this statement is false. 

Multiple choice

Which of the following statements is/are false?

a. The method in which a zygote grows and develops into a full organism varies in different organisms. b. The fertilisation which occurs inside a body is called internal fertilisation. c. Asexual reproduction promotes diversity of characters in the offsprings by providing genetic variation.

  1. Only a

  2. Both a and b

  3. Only b

  4. Both b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option.

Multiple choice

Gametangial copulation is seen in

  1. albugo

  2. pythium

  3. mucor

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

Gametangial copulation, where two gametangia fuse to form a zygospore, is a characteristic feature of Mucorales, such as Mucor.

Multiple choice

What are the copulating branches of zygophores in mucor are known as?

  1. Gametangia

  2. Pseudogametangia

  3. Progametangia

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

In fungi such as Mucor, the specialized hyphal branches that fuse during sexual reproduction to form gametangia are known as progametangia. These structures precede the formation of the actual gametangia. Hence, option C is correct.

Multiple choice

Which of the following is false?

  1. The zygosporangium of Rhizopus lacks columella.

  2. The zygosporangium of Rhizopus contains columella.

  3. The zygospores are thick walled diploid spores.

  4. After meiotic division in the zygospore, only one nucleus remains functional.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The zygosporangium of Rhizopus does not contain a columella; the columella is a structure found in the sporangium, not the zygosporangium. Therefore, the statement claiming it contains a columella is false.

Multiple choice

Schizosaccharomyces octosporus shows

  1. haplodiplontic life cycle

  2. diplontic life cycle

  3. haplontic life cycle

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

Schizosaccharomyces octosporus, like many yeasts, spends the majority of its life cycle in the haploid state, undergoing meiosis immediately after zygote formation. This characterizes a haplontic life cycle.