Question 3

   Question:  Choose the correct answer from the options given below :

   Options: 

       A. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

       B. (a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)

       C. (a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)

       D. (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)

   Correct Answer: C

   Year: NEET Re-2022

   Solution: Different ways of asexual reproduction are seen in different organisms: Chlamydomonas - Zoospores; Penicillium - Conidia; Hydra - Buds; Sponge - Gemmules.

   Step Solution:

    1.  Match Chlamydomonas with its motile asexual spore (Zoospore).

    2.  Match Penicillium with its non-motile fungal spore (Conidia).

    3.  Match Hydra with its external outgrowth (Bud).

    4.  Match Sponges with their internal asexual buds (Gemmules).

    5.  Select the option that aligns all four correctly (Option C).

   Difficulty Level: Easy

   Concept Name: Asexual Reproductive Structures

   Short cut solution: Remember "Sponge-Gemmule" to quickly narrow down choices in matching questions.

Question 7

   Question: Offsets are produced by

   Options: 

       A. Meiotic divisions

       B. Mitotic divisions

       C. Parthenogenesis

       D. Parthenocarpy

   Correct Answer: B

   Year: 2018

   Solution: Offset is a vegetative part of a plant, formed by mitosis. Meiotic divisions do not occur in somatic cells.

   Step Solution:

    1.  Identify offsets as a method of vegetative propagation.

    2.  Recognize that vegetative propagation involves somatic (body) cells.

    3.  Recall that somatic growth occurs through mitosis, not meiosis.

    4.  Eliminate parthenogenesis and parthenocarpy as they relate to embryo/fruit formation without fertilization.

    5.  Conclude mitosis is the mechanism (Option B).

   Difficulty Level: Easy

   Concept Name: Vegetative Propagation / Mitosis

   Short cut solution: All asexual/vegetative reproduction in plants relies on Mitosis.

Question 9

   Question: Which one of the following statements is not correct?

   Options: 

       A. Water hyacinth, growing in the standing water, drains oxygen from water that leads to the death of fishes.

       B. Offspring produced by the asexual production are called clone.

       C. Microscopic, motile asexual reproductive structures are called zoospores.

       D. In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.

   Correct Answer: D

   Year: NEET 2016 P2

   Solution: Plantlet always arise from nodes of stem or modified stem.

   Step Solution:

    1.  Analyze Statement A: Water hyacinth is known for draining oxygen (Correct).

    2.  Analyze Statement B: Asexual offspring are genetically identical clones (Correct).

    3.  Analyze Statement C: Motile asexual spores are defined as zoospores (Correct).

    4.  Analyze Statement D: Check the site of plantlet origin.

    5.  Identify that plantlets grow from nodes, making "internodes" incorrect (Option D).

   Difficulty Level: Medium

   Concept Name: Plant Morphology / Vegetative Propagules

   Short cut solution: Buds and new shoots in plants always emerge from nodes, never internodes.

Question 11

   Question:

   Options: 

       A. a - iii, b - i, c - iv, d - ii

       B. a - iv, b - iii, c - i, d - ii

       C. a - ii, b - i, c - iv, d - iii

       D. a - i, b - ii, c - iv, d - iii

   Correct Answer: A

   Year: NEET 2016 P2

   Solution: (Matching result provided as Option A).

   Difficulty Level: Medium

   Concept Name: Asexual Reproduction Matching

Question 12

   Question: Which of the following pairs is not correctly matched?

   Options: 

       A. Mode of reproduction Example Binary fission -Sargassum

       B. Mode of reproduction Example Conidia -Penicillium

       C. Mode of reproduction Example Offset Water -hyacinth

       D. Mode of reproduction Example Rhizome-Banana

   Correct Answer: A

   Year: NEET 2015

   Solution: Binary fission usually takes place in Amoeba, Paramoecium and Euglena.

   Step Solution:

    1.  Check Pair B: Penicillium uses Conidia (Correct).

    2.  Check Pair C: Water hyacinth uses Offsets (Correct).

    3.  Check Pair D: Banana propagates via Rhizomes (Correct).

    4.  Check Pair A: Sargassum is a multicellular alga.

    5.  Conclude binary fission (unicellular process) is incorrect for Sargassum (Option A).

   Difficulty Level: Easy

   Concept Name: Modes of Reproduction

   Short cut solution: Binary fission is almost exclusively for unicellular organisms.

Question 13

   Question: In which one pair both the plants can be vegetatively propagated by leaf pieces?

   Options: 

       A. Agave and Kalanchoe

       B. Bryophyllum and Kalanchoe

       C. Asparagus and Bryophyllum

       D. Chrysanthemum and Agave

   Correct Answer: B

   Year: 2005

   Solution: Leaves of a number of plants develop or possess adventitious buds for vegetative propagation, e.g., Bryophyllum, Kalanchoe, Adiantum caudatum.

   Step Solution:

    1.  Identify plants that use leaves for reproduction.

    2.  Recall Bryophyllum (famous for foliar buds).

    3.  Identify Kalanchoe as another example of leaf propagation.

    4.  Note that Agave uses bulbils and Asparagus uses roots/stems.

    5.  Select the pair containing both leaf-propagators (Option B).

   Difficulty Level: Medium

   Concept Name: Vegetative Propagation by Leaves

   Short cut solution: Bryophyllum is the primary example of leaf budding; always look for it in the options.

Question 14

   Question: In ginger vegetative propagation occurs through:

   Options: 

       A. Offsets

       B. Bulbils

       C. Runners

       D. Rhizome

   Correct Answer: D

   Year: NEET 2015 C

   Solution: Ginger propagates through its modified underground stem known as a rhizome.

   Step Solution:

    1.  Identify the nature of the ginger plant's edible part.

    2.  Classify it as a modified underground stem.

    3.  Recall that horizontal underground stems with nodes and internodes are rhizomes.

    4.  Select Option D.

   Difficulty Level: Easy

   Concept Name: Rhizome Propagation

   Short cut solution: Ginger and Turmeric are always Rhizomes.

Question 19

   Question: Which one of the following is correctly matched?

   Options: 

       A. Onion - Bulb

       B. Ginger - Sucker

       C. Chlamydomonas - Conidia

       D. Yeast - Zoospores

   Correct Answer: A

   Year: 2012

   Solution: Onion - Bulb (Underground stem); Ginger - Rhizome; Chlamydomonas - Zoospore; Yeast - Ascospores.

   Step Solution:

    1.  Evaluate Pair A: Onion is a modified stem called a bulb (Correct).

    2.  Evaluate Pair B: Ginger is a rhizome, not a sucker (Incorrect).

    3.  Evaluate Pair C: Chlamydomonas produces zoospores (Incorrect).

    4.  Evaluate Pair D: Yeast reproduces by budding or ascospores (Incorrect).

    5.  Final answer is Option A.

   Difficulty Level: Easy

   Concept Name: Vegetative Propagules

   Short cut solution: Onion is the classic example of a Bulb.

Question 20

   Question: The “Eyes” of the potato tuber are

   Options: 

       A. root buds

       B. flower buds

       C. shoot buds

       D. axillary buds

   Correct Answer: D

   Year: 2011

   Solution: The axillary buds of the potato tuber are called “eyes” in common language. They are found at the nodes of the stem tuber.

   Step Solution:

    1.  Define a potato tuber as a modified underground stem.

    2.  Identify "eyes" as the spots where new growth starts.

    3.  Recall that stems have nodes and axillary buds.

    4.  Correlate the "eyes" with these axillary buds.

    5.  Select Option D.

   Difficulty Level: Easy

   Concept Name: Stem Tuber Morphology

   Short cut solution: Potato = Stem; Stems have Axillary buds.

Question 21

   Question: What is common between vegetative reproduction and apomixis?

   Options: 

       A. Both are applicable to only dicot plants

       B. Both bypass the flowering phase

       C. Both occur round the year

       D. Both produces progeny identical to the parent

   Correct Answer: D

   Year: 2011M

   Solution: Vegetative reproduction and apomixis both are asexual methods of reproduction, which gives the progeny genetically similar to parent.

   Step Solution:

    1.  Define vegetative reproduction as asexual.

    2.  Define apomixis as asexual seed formation.

    3.  Recall that asexual reproduction involves no gametic fusion or recombination.

    4.  Identify the primary result: clones (genetically identical offspring).

    5.  Select Option D.

   Difficulty Level: Medium

   Concept Name: Asexual Reproduction Principles

   Short cut solution: Asexual = Clones = Identical Progeny.

Question 22

   Question: Which one of the following pairs is wrongly matched?

   Options: 

       A. Penicillium - Conidia

       B. Water hyacinth - Runner

       C. Bryophyllum - Leaf buds

       D. Agave - Bulbils

   Correct Answer: B

   Year: 2011M

   Solution: Water hyacinth is a free floating perennial plant. (Note: In Question 12, the correct match for Water hyacinth is an Offset).

   Step Solution:

    1.  Check Pair A: Penicillium-Conidia (Correct).

    2.  Check Pair C: Bryophyllum-Leaf buds (Correct).

    3.  Check Pair D: Agave-Bulbils (Correct).

    4.  Check Pair B: Water hyacinth is aquatic and uses offsets, not runners.

    5.  Select Option B.

   Difficulty Level: Medium

   Concept Name: Vegetative Propagules

   Short cut solution: Aquatic plants like Water Hyacinth and Pistia use Offsets.

Question 23

   Question: Vegetative propagation in mint occurs by:

   Options: 

       A. offset

       B. rhizome

       C. sucker

       D. runner

   Correct Answer: C

   Year: 2009

   Solution: Sucker is a mode of vegetative propagation... mint has the sucker. It is a non-green slender stem branch which arises from the underground base and ultimately comes out to form a new aerial shoot.

   Step Solution:

    1.  Observe the growth habit of mint.

    2.  Identify the underground horizontal branch that emerges to form new shoots.

    3.  Recall the definition of a sucker.

    4.  Differentiate from runners (above ground) and rhizomes (thick underground).

    5.  Select Option C.

   Difficulty Level: Medium

   Concept Name: Sucker Propagation

   Short cut solution: Mint/Chrysanthemum = Sucker.

Question 30

   Question: A population of genetically identical individuals, obtained from asexual reproduction is

   Options: 

       A. Callus

       B. Clone

       C. Deme

       D. Aggregate

   Correct Answer: B

   Year: 1993

   Solution: Cloning is a technique by which genetically same individuals can be produced without including any sexual reproduction.

   Step Solution:

    1.  Define asexual reproduction.

    2.  Recall that it excludes meiosis and fertilization.

    3.  Identify the term for organisms sharing the same genetic makeup.

    4.  Distinguish from "callus" (unorganized cell mass) and "deme" (local population).

    5.  Select Option B.

   Difficulty Level: Easy

   Concept Name: Cloning

   Short cut solution: Identical + Asexual = Clone.

Question 31

   Question: Vegetative reproduction of Agave occurs through

   Options: 

       A. rhizome

       B. stolon

       C. bulbils

       D. sucker

   Correct Answer: C

   Year: 1991

   Solution: Vegetative reproduction occurs in Agave through bulbils. Bulbils are specialised vegetative or floral buds that modify into a swollen structure.

   Step Solution:

    1.  Identify Agave as a plant that produces modified buds on its floral axis.

    2.  Recall the name of these specialized buds.

    3.  Recognize "bulbils" as the specific structure.

    4.  Select Option C.

   Difficulty Level: Easy

   Concept Name: Bulbils

   Short cut solution: Agave = Bulbils.