Monoecious plant of Chara shows occurrence of
Answer key (D) & worked solution
Correct answer: Option D
Chara is a monoecious green alga that shows the presence of an upper oogonium and lower antheridium on the same plant.
NEET BotanyUpdated 19 Oct 2026
Reproduction in Organisms: NEET PYQs and weightage
Reproduction in Organisms carries 1.5 of 100 Botany marks in NEET by past-paper share: 12 of the 793 tagged NEET Botany PYQs in the ViJEEta bank (NEET 2013–2026). It ranks 21 of 21 Botany chapters.
Not in the NEET syllabus now. NTA removed Reproduction in Organisms from NEET-UG; it is still in NCERT and school exams. Spend NEET time on the chapters below instead. The PYQs here are from before it was removed.
1.5/100 Weight in Botany
2 of 5 Exam importance (2/5, by past-paper share)
12 NEET PYQs
64 Practice questions
45 With measured difficulty
How the weight is computed: this chapter's tagged NEET PYQs divided by all tagged NEET Botany PYQs in the bank (12 of 793), times 100, with repeated questions counted once. The bank does not store the year of each NEET question, so none is printed. Computed from the bank at build time. Updated 19 Oct 2026.
How does NEET ask Reproduction in Organisms?
8 real previous-year questions from this chapter, as printed in the paper, each with its worked solution. Answer the first one here with no sign-in.
Which one of the following shows isogamy with non-flagellated gametes?
Answer key (C) & worked solution
Correct answer: Option C
In Spirogyra, sexual reproduction takes place through non-flagellated and similar sized gametes, and hence called isogamous. Isogamy involves the fusion of gametes that are morphologically and physiologically similar.
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as:
Answer key (C) & worked solution
Correct answer: Option C
The phenomenon in which the female gamete develops into an embryo without getting fused with male gamete (fertilisation) is called parthenogenesis. parthenocarpy is the natural or artificially induced production of fruit without fertilisation of ovules, which makes the fruit seedless. Fertilization is also known as syngamy. Autogamy, or self-fertilization, refers to the fusion of two gametes that come from one individual.
Isogamous condition with non-flagellated gametes is found in
Answer key (B) & worked solution
Correct answer: Option B
Spirogyra reproduces by isogamy and produces non-motile gametes. Volvox and Fucus reproduce by oogamy with the male gamete being motile and the female gamete being non-motile. Chlamydomonas reproduces by isogamy, anisogamy and oogamy, and the gametes may be motile or non-motile.
Which of the following flowers only once in its life-time?
Answer key (C) & worked solution
Correct answer: Option C
Bamboo species are monocarpic i.e., produce flowers only once in their life after 50-100 years depending on the species. Jackfruit, papaya, and mango are polycarpic i.e., produce flowers and fruits many times in their life.
Products of sexual reproduction generally generates
Answer key (C) & worked solution
Correct answer: Option C
Sexual reproduction leads to new genetic combination which leads to variation as it involves mixing of gametes from two different parents.
Zygotic meiosis is characteristic of
Answer key (B) & worked solution
Correct answer: Option B
Zygotic meiosis is defined as a meiotic division that results in the formation of haploid individuals. It occurs in the zygote. It is to be noted that thallophytes have dominant gametophytic generation, i.e., the presence of haploid individuals. Chlamydomonas has a haplontic life cycle as they belong to the kingdom Plantae and division thallophyta, hence show zygotic meiosis.
Which of the following pairs is not correctly matched?
Answer key (C) & worked solution
Correct answer: Option C
Sargassum reproduces by fragmentation. Binary fission does not occur in Sargassum.
Which topics in Reproduction in Organisms carry the most questions?
All 4 topics, by tagged PYQs, then practice questions. Counted from the bank. Updated 19 Oct 2026.
| Topic | PYQs | Practice questions |
|---|---|---|
| Sexual reproductionNot in NEET now | 6 | 24 |
| Introduction to reproductionNot in NEET now | 5 | 39 |
| ParthenogenesisNot in NEET now | 1 | 0 |
| Miscellaneous Examples | 0 | 1 |
Why does Reproduction in Organisms show "–" until you answer 3 questions?
Unknown is not zero. Until you answer at least 3 graded questions in Reproduction in Organisms, ViJEEta shows – instead of a zero or a 50% default. Book exercises can raise chapter mastery up to 0.60, adaptive practice up to 0.75, and only a timed chapter test or mock can certify 0.80 and above.
What happens when you test Reproduction in Organisms?
Every chapter test is 25 questions. It starts at moderate difficulty and adapts after each saved answer. If you open a solution before answering, that attempt earns no credit, so your mastery stays honest.
Start the Reproduction in Organisms test