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 pairs of asexual reproductive structures is found in animals?

  1. Conidia and Buds

  2. Zoospores and Conidia

  3. Buds and Gemmules

  4. Gemmules and Zoospores

  5. Conidia and Zoospores
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gemmules and buds are asexual reproductive structures found in animals. Gemmules are found in sponges such as Sycon. They are ball-like structures with protective covering, which consists of calcareous spicules. Budding is a common mode of asexual reproduction found in Hydra where outgrowths called buds, arise from the body of the organism, which grow and give rise to the new organisms.

Multiple choice

Match the following:

 
Name of organisms Mode of reproduction
a. Fungi 1. Regeneration
b. Yeasts 2. Spore formation
c. Planaria 3. Budding

  1. a - 1, b - 3, c - 2

  2. a - 3, b - 2, c - 1

  3. a - 1, b - 2, c - 3

  4. a - 2, b - 1, c - 3

  5. a - 2, b - 3, c - 1
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option. Fungi reproduce by the method of spore formation. Fungi multiply and spread easily due to the millions of asexual spores they produce. In lower organisms like yeast, the mode of reproduction is budding. In planaria, the mode of reproduction is regeneration. A fragmented organism regenerates the lost part of its body and becomes a new organism.

Multiple choice

In Paramecium, the phenomenon of cyclosis is associated with

  1. excretion

  2. locomotion

  3. digestion

  4. reproduction

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cyclosis (cytoplasmic streaming) in Paramecium primarily aids in the movement and circulation of food vacuoles during digestion. It distributes nutrients but is not primarily for excretion, locomotion, or reproduction.

Multiple choice

Which of the following statements is not true for sexual reproduction?

  1. Two parents contribute sex cells for fertilization.

  2. Male sex cell is called sperm and female sex cell is called ovum.

  3. Offsprings have exactly same characters as parent.

  4. Sexual reproduction results in variation of characters.

  5. Most organisms reproduce by means of sexual reproduction.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sexual reproduction results in variation of characters as it receives some traits of both parents and is never exactly like either parent. 

Multiple choice

Which of the following is not true about asexual reproduction?

  1. There is fusion of male and female gametes.

  2. A large number of offsprings are produced.

  3. Only single parent is required.

  4. Organisms reproduce during favourable conditions.

  5. Hydra reproduces asexually.

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fusion of male and female gametes takes place in sexual reproduction. 

Multiple choice

What is the mode of reproduction of spirogyra?

  1. Binary fission

  2. Multiple fission

  3. Fragmentation

  4. Budding

  5. Vegetative propagation

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In Spirogyra, the offsprings are formed by the process of fragmentation. In fragmentation, the parent organism is broken into small fragments, and each fragment is capable of reproducing new offspring/organism of the same kind.