Q1: Identify the asexual reproductive structure associated with Penicillium. [ NEET 2022]
(a) Buds
(b) Zoospores
(c) Conidia
(d) Gemmules
Ans. (c)
The asexual reproductive structure associated with Penicillium is conidia.
Note: In 2023, there were no questions asked from this chapter.
Q2: Which of the following plants is monoecious? [ NEET 2021]
(a) Marchantia polymorpha
(b) Cycas circinalis
(c) Carica papaya
(d) Chara
Ans. (d)
Q3: Vegetative propagule in Agave is as: [ NEET 2020]
(a) Rhizome
(b) Bulbil
(c) Offset
(d) Eye
Ans. (b)
A bulbil, which is a type of vegetative propagule found in the Agave plant. Bulbils in Agave are floral buds that have been altered and grow on the flowering axis. These bulbils remain connected to the floral axis and eventually sprout into new plants. Therefore, the accurate response is 'Bulbil'.
Q4: In some plants, the female gamete develops into embryo without fertilisation. This phenomenon known as [ NEET 2019]
(a) Parthenogenesis
(b) Autogamy
(c) Parthenocarpy
(d) Syngamy
Ans. (a)
Q5: Offsets are produced by [ NEET 2018]
(a) Meiotic divisions
(b) Mitotic divisions
(c) Parthenocarpy
(d) Parthenogenesis
Ans. (b)
Q6: Which of the following flowers only once in its lifetime? [ NEET 2018]
(a) Bamboo Species
(b) Jackfruit
(c) Mango
(d) Papaya
Ans. (a)
Certain bamboo species are monocarpic, i.e., flower generally only once in their lifetime (after 50-100 years). Other plants (jackfruit, mango and papaya) are polycarpic, i.e., produce flowers and its many times during their lifetime.
Q7: Which one of the following statements is not correct? [NEET 2016]
(a) Offspring produced by the asexual reproduction are called clone.
(b) Microscopic, motile, asexual reproductive structures are called zoospores.
(c) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.
(d) Water hyacinth, growing in the standing water, drains oxygen from water that leads to the death of fishes.
Ans. (c)
The statement that is not correct is option (c), which states that in potato, banana, and ginger, the plantlets arise from the internodes present in the modified stem.
In reality, plantlets arise from different parts in these three plants:
Therefore, option (c) is incorrect.
Option (a) is correct, as offspring produced by asexual reproduction are genetically identical to the parent and are called clones.
Option (b) is also correct, as zoospores are a type of microscopic, motile, asexual reproductive structures found in some algae, fungi, and protozoa.
Option (d) is also correct, as water hyacinth is an invasive aquatic plant that can cause the depletion of oxygen in water bodies, leading to the death of fish and other aquatic animals.
Q8: Which one of the following generates new genetic combinations leading to variation? [NEET 2016]
(a) Vegetative reproduction
(b) Parthenogenesis
(c) Sexual reproduction
(d) Nucellar polyembryony
Ans. (c)
Q9: Match column I with column II and select correct option using the codes given below. [NEET 2016]
(a) A-(iv), B-(iii), C-(i), D-(ii)
(b) A-(ii), B-(i), C-(iv), D-(iii)
(c) A-(i), B-(ii). C-(iv), D-(iii)
(d) A-(iii), B-(i), C-(iv), D-(ii)
Ans. (d)
Q10: Seed formation without fertilization in flowering plants involves the process of: [ NEET 2016]
(a) Sporulation
(b) Budding
(c) Somatic hybridization
(d) Apomixis
Ans. (d)
Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization.
Apomixis
Without the need for male fertilization, the resulting seed germinates a plant that develops as a maternal clone.
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1. What is the process of reproduction in organisms? |
2. What are the different modes of reproduction in organisms? |
3. How does asexual reproduction occur in organisms? |
4. What is the significance of sexual reproduction in organisms? |
5. How does fertilization occur in organisms? |
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