CBSE Class 12 Biology Previous Year Question Paper 2014

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This is the CBSE Class 12 Biology Previous Year Question Paper from 2014. It focuses on the topic of Reproduction, featuring questions that assess understanding of asexual reproduction methods and structures. The paper includes 1-mark questions that require naming specific propagules, organisms, or reproductive units like bulbils, leaf buds, water hyacinth, yeast, Penicillium, Oxalis, Pistia, Amoeba, and Chlamydomonas. It also delves into the characteristics and functions of zoospores and the concept of clones produced by asexual reproduction. Solving this board question paper provides valuable insights into the exam pattern and helps students reinforce their knowledge of reproductive biology for effective exam preparation.

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Quick info

BoardCBSE
Class12
SubjectBiology
Session2014
LanguageEnglish
TypePrevious Year Question Paper
Exam typeBoard Exam

Paper pattern

The paper contains 1-mark questions covering various aspects of reproduction.

Topics covered

Paper topics

  • Vegetative propagation
  • Asexual reproduction
  • Plant reproduction
  • Fungal reproduction
  • Algal reproduction
  • Clones
  • Zoospores
  • Bulbil
  • Leaf buds
  • Water hyacinth
  • Yeast
  • Penicillium
  • Oxalis
  • Pistia
  • Amoeba
  • Chlamydomonas

Important topics

  • Vegetative propagules
  • Terror of Bengal
  • Fungal reproduction methods
  • Plant runners and offsets
  • Cell division as reproduction
  • Zoospores in algae
  • Budding in yeast
  • Conidia formation
  • Clones from asexual reproduction

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Question paper text

Reproduction

1 Mark Questions

  1. Name the vegetative propagules in the following:

(i)Agave (ii) Bryophyllum [Ail India 2014 C]

Ans. The vegetative propagules are as follow:

  1. In Agave - Bulbil
  2. In Bryophyllum – Leaf buds/adventitious buds
  3. Write the name of the organism that is referred to as 'Terror of Bengal'.

[Delhi 2014]

Ans. Water hyacinth is referred to as the 'Terror of Bengal'.

  1. Give one example each of a fungus which reproduces by
  2. budding (ii) conidia [Delhi 2014 C]

Ans. Fungus that reproduces by

  1. budding - Yeast
  2. conidia - Penicillium
  1. Give one example of a plant that reproduces by
  2. runner (ii) offset [Delhi 2014 C]

Ans. Below is the example of a plant that reproduces by

  1. runner - Oxalis
  2. offset - Pistia
  1. Name an organism, where cell division in itself is a mode of reproduction. [All India 2013; Foreign 2010] Ans. In unicellular organisms like Amoeba, bacteria, etc., cell division in itself is a mode of reproduction
  2. Name an alga that reproduces asexually through zoospores. Why are these reproductive units so called?[All India 2013] Ans. Chlamydomonas is an alga that reproduces asexually through zoospores. Due to mobility (motile), these are referred to as zoospore.
  1. Which one of the following statements is true for yeast?

(i)The cell divides by binary fission. One of them develops into a bud.

  1. The cell divides unequally. The smaller cell develops into a bud.

(iii)The cell produces conidia which develop into a bud. [Delhi 2013 C]

Ans. Statement (ii) is true for yeast. The cell divides unequally. The smaller cell develops into a bud

  1. How does Penicillium reproduce asexually? [Delhi 2013]

Ans. Penicillium reproduces asexually by conidia formation, which is quite commdn in fungi

Offsprings produced by asexual reproduction are called clones. Justify giving two reasons. [hots; ah India 2010] Ans. Offsprings produced by asexual reproduction are called clones, because

  1. they are morphologically similar to their parent.
  2. they have same genetic composition as their parent.
  1. Mention a characteristic feature and a function of zoospores in some algae. [All India 2010]

Ans.(i) Characteristic feature Zoospores are motile, microscopic and thin-walled

  1. Function Zoospores are asexual reproductive structures, which help in multiplication of algae
  1. Identify this reproductive structure and name the organism they are being released from.

[Delhi 2010]

Ans. The reproductive structure in the figure are zoospores. These are released by

Frequently asked questions

What is this document?

This is a CBSE Class 12 Biology Previous Year Question Paper from 2014, focusing on the topic of Reproduction.

What is the main topic covered?

The paper primarily covers various methods and examples of asexual reproduction in plants, fungi, and algae.

How can solving this paper help students?

Solving this previous year question paper helps students understand the exam pattern, types of questions asked, and improve their preparation for the CBSE Class 12 Biology board exams.

What types of questions are included?

The paper includes 1-mark questions requiring students to name organisms, reproductive structures, or justify concepts like clones.

Is this a complete question paper?

This extract contains selected 1-mark questions from the 2014 CBSE Class 12 Biology board paper, focusing on the Reproduction chapter.

Important links

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