Plant Seeds Quiz: Class 9 Biology

1. In a monocotyledonous seed, what is the name of the protective sheath that encloses the plumule?

A) Scutellum B) Coleoptile C) Coleorhiza D) Epicotyl

2. What is the name of the protective sheath that covers the radicle in monocotyledonous seeds, allowing it to emerge safely?

A) Plumule B) Coleoptile C) Coleorhiza D) Hypocotyl

3. Which statement accurately differentiates between an albuminous and a non-albuminous seed?

A) Albuminous seeds have two cotyledons, while non-albuminous seeds have one. B) Albuminous seeds store food mainly in their endosperm, while non-albuminous seeds store food mainly in their cotyledons. C) Non-albuminous seeds germinate epigeally, while albuminous seeds germinate hypogeally. D) Albuminous seeds lack a seed coat, while non-albuminous seeds have a seed coat.

4. During the imbibition phase of seed germination, what is the primary role of water absorption?

A) To initiate photosynthesis B) To protect the seed from pathogens C) To swell the seed and activate metabolic enzymes D) To cool down the seed embryo

5. Which plant hormone is known to break seed dormancy and promote the germination of seeds by stimulating the synthesis of hydrolytic enzymes?

A) Auxin B) Cytokinin C) Abscisic acid D) Gibberellin

6. Fleshy, sweet, and brightly colored fruits are adaptations primarily for which type of seed dispersal?

A) Wind dispersal B) Water dispersal C) Animal (internal) dispersal D) Explosive dispersal

7. During germination, complex stored food substances (like starch and proteins) are broken down into simpler, soluble forms. In what chemical form are these mobilized nutrients primarily translocated to the growing embryonic axis?

A) As insoluble polymers B) As carbon dioxide and water C) As simple sugars and amino acids D) As fatty acids and glycerol

8. Why is an adequate supply of oxygen crucial for most seeds during the active phase of germination?

A) Oxygen is needed for photosynthesis. B) Oxygen helps in water absorption. C) Oxygen is required for aerobic respiration to generate energy. D) Oxygen promotes the development of the seed coat.

9. A type of seed dormancy caused by the presence of chemical inhibitors (like abscisic acid) within the embryo or seed coat is known as:

A) Physical dormancy B) Mechanical dormancy C) Physiological dormancy D) Secondary dormancy

10. What is the main reason that seed viability decreases over time, even under optimal storage conditions?

A) Growth of mold and fungi B) Accumulation of metabolic damage and depletion of food reserves C) Increase in seed coat permeability D) Reduction in oxygen supply

Seeds of Plants - Class 9 Science Quiz

A Quiz for Class 9 Science Students (Set 2)

1. In a monocotyledonous seed, what is the name of the protective sheath that encloses the plumule?

2. What is the name of the protective sheath that covers the radicle in monocotyledonous seeds, allowing it to emerge safely?

3. Which statement accurately differentiates between an albuminous and a non-albuminous seed?

4. During the imbibition phase of seed germination, what is the primary role of water absorption?

5. Which plant hormone is known to break seed dormancy and promote the germination of seeds by stimulating the synthesis of hydrolytic enzymes?

6. Fleshy, sweet, and brightly colored fruits are adaptations primarily for which type of seed dispersal?

7. During germination, complex stored food substances (like starch and proteins) are broken down into simpler, soluble forms. In what chemical form are these mobilized nutrients primarily translocated to the growing embryonic axis?

8. Why is an adequate supply of oxygen crucial for most seeds during the active phase of germination?

9. A type of seed dormancy caused by the presence of chemical inhibitors (like abscisic acid) within the embryo or seed coat is known as:

10. What is the main reason that seed viability decreases over time, even under optimal storage conditions?

Quiz Results

Was this page helpful?

Seeds of Plants - Class 9 Science Quiz

A Quiz for Class 9 Science Students (Set 2)

1. In a monocotyledonous seed, what is the name of the protective sheath that encloses the plumule? Read

2. What is the name of the protective sheath that covers the radicle in monocotyledonous seeds, allowing it to emerge safely? Read

3. Which statement accurately differentiates between an albuminous and a non-albuminous seed? Read

4. During the imbibition phase of seed germination, what is the primary role of water absorption? Read

5. Which plant hormone is known to break seed dormancy and promote the germination of seeds by stimulating the synthesis of hydrolytic enzymes? Read

6. Fleshy, sweet, and brightly colored fruits are adaptations primarily for which type of seed dispersal? Read

7. During germination, complex stored food substances (like starch and proteins) are broken down into simpler, soluble forms. In what chemical form are these mobilized nutrients primarily translocated to the growing embryonic axis? Read

8. Why is an adequate supply of oxygen crucial for most seeds during the active phase of germination? Read

9. A type of seed dormancy caused by the presence of chemical inhibitors (like abscisic acid) within the embryo or seed coat is known as: Read

10. What is the main reason that seed viability decreases over time, even under optimal storage conditions? Read

Quiz Results

Was this page helpful?

1. In a monocotyledonous seed, what is the name of the protective sheath that encloses the plumule?

2. What is the name of the protective sheath that covers the radicle in monocotyledonous seeds, allowing it to emerge safely?

3. Which statement accurately differentiates between an albuminous and a non-albuminous seed?

4. During the imbibition phase of seed germination, what is the primary role of water absorption?

5. Which plant hormone is known to break seed dormancy and promote the germination of seeds by stimulating the synthesis of hydrolytic enzymes?

6. Fleshy, sweet, and brightly colored fruits are adaptations primarily for which type of seed dispersal?

7. During germination, complex stored food substances (like starch and proteins) are broken down into simpler, soluble forms. In what chemical form are these mobilized nutrients primarily translocated to the growing embryonic axis?

8. Why is an adequate supply of oxygen crucial for most seeds during the active phase of germination?

9. A type of seed dormancy caused by the presence of chemical inhibitors (like abscisic acid) within the embryo or seed coat is known as:

10. What is the main reason that seed viability decreases over time, even under optimal storage conditions?