NEET Biology: Seed germination Practice Questions
13 free multiple-choice questions on Seed germination (Plant Growth and Development) for NEET Biology, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. The stored food material available for the developing seedling is primarily found in which part of the seed?
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Correct answer: C — Cotyledons
In many seeds, the endosperm serves as the primary storage site for food reserves that are utilized during germination.
Q2. Seed dormancy is a mechanism that prevents germination under unfavorable conditions. What biological factor often controls the breaking of this dormancy?
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Correct answer: C — Presence of excess water
Dormancy is broken when the seed perceives favorable environmental conditions, often requiring the presence of sufficient water and appropriate temperature.
Q3. Dormancy in a seed refers to:
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Correct answer: A — The state of suspended growth due to unfavorable environmental conditions
Dormancy is a state where the seed is physiologically inactive, waiting for favorable environmental cues (like moisture and temperature) before germination can occur.
Q4. The growth of the radicle (embryonic root) is the first visible sign of seed germination. What is the primary function of the radicle?
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Correct answer: A — Anchoring the seedling and absorbing water
The radicle is the embryonic root, and its primary function is to anchor the seedling and absorb water and minerals from the soil.
Q5. Which part of the seed is primarily responsible for storing food reserves for the developing seedling?
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Correct answer: B — Endosperm
The endosperm stores the majority of the food reserves (starch, proteins, lipids) required for the embryo and the seedling to grow before it can photosynthesize.
Q6. The process immediately following imbibition in a seed is:
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Correct answer: C — Emergence of the radicle
After the seed absorbs water (imbibition), the metabolic processes are activated, which leads to the emergence of the radicle (embryonic root).
Q7. The process of imbibition refers to the seed's absorption of water. What is the immediate biochemical consequence of this water absorption?
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Correct answer: A — Activation of dormant enzymes
Water absorption hydrates the seed tissues, causing the dormant enzymes to become active, thereby initiating the metabolic processes required for germination.
Q8. What is the primary function of the enzyme amylase released during seed germination?
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Correct answer: D — To break down starch into sugars
Amylase breaks down stored starch molecules into simpler sugars, making the food available for the developing embryo.
Q9. Which of the following is a condition that generally inhibits the process of seed germination?
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Correct answer: B — Absence of oxygen
The absence of oxygen (anaerobic conditions) prevents aerobic respiration, halting the necessary metabolic activity required for seed germination.
Q10. Which of the following is the most crucial requirement for the initiation of seed germination?
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Correct answer: A — Water
Water is the initial trigger required for the metabolic activities to start in the seed.
Q11. The primary function of the plumule during the initial phase of germination is:
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Correct answer: B — Emergence of the shoot
The plumule is the embryonic shoot which develops into the stem and leaves of the seedling, initiating growth above the seed.
Q12. What is the term used to describe the growth of the embryonic root structure emerging from the seed?
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Correct answer: D — Radicle
The radicle is the embryonic root that emerges first from the seed, anchoring the seedling and initiating the growth towards the soil.
Q13. If a seed is kept in a dark, cool, and moist environment, which factor is least critical for successful germination?
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Correct answer: B — Presence of light
While the first three (water, temperature, oxygen) are critical, the presence of light is not a direct requirement for the internal biochemical process of germination, although light is needed later for photosynthesis.
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