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

Match the following:

 
1. Binary fission a. Reproduction involving fusion of gametes
2. Sexual reproduction b. Reproduction does not involve fusion of gametes
3. Asexual reproduction c. Reproduction in which an organism divides into two daughter organisms of equal size

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

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

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

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

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

This is the correct option. Binary fission is the reproduction in which an organism divides into two daughter organisms of equal size. Sexual reproduction is the reproduction that involves fusion of gametes. Asexual reproduction is the reproduction that does not involve fusion of gametes.

Multiple choice

Name the mode of reproduction in which a new individual develops and grows on the parent body.

  1. Regeneration

  2. Spore formation

  3. Budding

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

Buds grow on the parent body and gradually form a new individual. Hence, (3), i.e. budding, is correct. In fission and regeneration, new individuals separate out and there is no parent organism. In spore formation, spores develop on the parent body but they form new individuals after they fall on suitable substratum away from the parent body.

Multiple choice

Consider the following statements regarding asexual reproduction:

(a) A single parent is involved. (b) It involves formation and fusion of gametes. (c) It involves only meiotic divisions. (d) All individuals produced are genetically identical.

Which of the above statements are correct?

  1. Only (a) and (d)

  2. Only (a) and (b)

  3. Only (b) and (d)

  4. Only (c) and (d)

  5. Only (b) and (c)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement (a) is correct. A single parent is involved. Statement (b) is wrong. It does not involve formation and fusion of gametes. Statement (c) is wrong. It involves only mitotic divisions. Statement (d) is correct. All individuals produced are genetically identical, i.e. clone.

Multiple choice

Spore formation is a mode of reproduction in

  1. paramecium

  2. rhizopus

  3. leishmania

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

Spore formation is a common mode of reproduction in fungi, like bread moulds, i.e. rhizopus. Leishmania and paramecium reproduce by binary fission, while planaria forms new individuals by regeneration method.

Multiple choice

A protist showing both binary fission and conjugation is

  1. leishmania donovani

  2. amoeba proteus

  3. paramecium caudatum

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

Paramecium caudatum is a ciliated protist that reproduces asexually by transverse binary fission and undergoes a sexual process called conjugation. This dual capability allows for both rapid population growth and genetic recombination.

Multiple choice

Mammalia nourish their young ones through the

  1. pituitary gland

  2. mammary gland

  3. nourishing gland

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

The defining characteristic of mammals is the presence of mammary glands, which produce milk to nourish their young.

Multiple choice

Why are Granulosa cells similar to Sertoli cells?

  1. Both have FSH receptors.

  2. Both have LH receptors.

  3. Both produce testosterone.

  4. Both have very low levels of cAMP.

  5. Both produce estrogen.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Both types of cells have FSH receptors.

Multiple choice

The life cycle having gametic meiosis is called

  1. haplontic type

  2. diplontic type

  3. haplodiplontic type

  4. diplobiontic type

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

 A life cycle is a series of changes in form that an organism undergoes, returning to the starting state. There are 3 types of cycles:Haplontic life cycle — the haploid stage is multicellular and the diploid stage is a single cell, meiosis is "zygotic". Diplontic life cycle — the diploid stage is multicellular and haploid gametes are formed, meiosis is "gametic". Haplodiplontic life cycle (also referred to as diplohaplontic, diplobiontic, or dibiontic life cycle) — multicellular diploid and haploid stages occur, meiosis is "sporic".