Q6. Which structure within the ovule eventually develops into the embryo after fertilization?
- A. Nucellus
- B. Embryo sac (megagametophyte)
- C. Integument
- D. Chalaza
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This page provides a free online MCQ test for NEET Biology preparation, focusing specifically on the chapter Sexual Reproduction in Flowering Plants. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.
Key concepts covered in this specific test include Following, Statements, Temperature, Viability, Longevity, and Incompatibility.
Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.
Which of the following statements about the effect of temperature on pollen viability is correct?
Extreme temperatures, both high and low, can reduce pollen viability.
Pollen viability remains unaffected by ambient temperature.
Only high temperatures affect pollen viability, while low temperatures enhance it.
Optimal pollen viability is achieved only at temperatures above 40°C.
Which of the following statements about floral longevity is correct?
Floral longevity is influenced by environmental factors and pollinator availability, affecting reproductive success.
Floral longevity is identical in all flowering plants regardless of environmental conditions.
Longer floral longevity always guarantees more pollination.
Floral longevity is solely genetically determined with no environmental influence.
Self-incompatibility in flowering plants is primarily:
A physical barrier that prevents pollen from reaching the stigma
A genetic mechanism that prevents pollen tube growth from self-pollen
Caused by lack of pollinators
A process of double fertilization
Which of the following statements about the embryo sac is correct?
The embryo sac is the male gametophyte in flowering plants.
The embryo sac develops from the megaspore and contains the egg cell.
The embryo sac forms by the fusion of two sperm cells.
The embryo sac is found only in gymnosperms.
Which process is primarily responsible for generating genetic variation in sexual reproduction of flowering plants?
Mitosis
Binary fission
Meiosis
Budding
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