Consider the following statements regarding endosperm:

1. Its development precedes embryo development.
2. It provides nutrition to the developing embryo.
3. Coconut water is cellular endosperm.
4. Castor seeds are albuminous (retain endosperm).

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 3 only

Consider the following statements regarding the dicot embryo:

1. It has an embryonal axis and two cotyledons.
2. The epicotyl is the portion above the level of cotyledons.
3. The hypocotyl terminates in the plumule.
4. The radicle is covered by a root cap.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the monocot embryo (grass):

1. The single cotyledon is called the scutellum.
2. The scutellum is situated laterally to the embryonal axis.
3. The coleoptile encloses the radicle and root cap.
4. The coleorrhiza encloses the shoot apex and leaf primordia.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1 and 2
• 2 and 3
• 3 and 4
• 1 and 4

Consider the following statements regarding seeds:

1. Non-albuminous seeds (e.g., Pea) have no residual endosperm.
2. Albuminous seeds (e.g., Wheat) retain a part of the endosperm.
3. Perisperm is the residual persistent nucellus (e.g., Black pepper).
4. The micropyle facilitates the entry of pollen into the seed during germination.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding fruit development:

1. The wall of the ovary develops into the pericarp.
2. False fruits like apple involve the thalamus in fruit formation.
3. Parthenocarpic fruits like banana develop without fertilisation.
4. True fruits develop only from the ovule.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 3 only

Consider the following statements regarding apomixis and polyembryony:

1. Apomixis is the production of seeds without fertilisation.
2. It is a form of sexual reproduction that mimics asexual reproduction.
3. Polyembryony involves the presence of multiple embryos in a seed.
4. Nucellar polyembryony is common in Citrus and Mango.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 3 and 4
• 2, 3 and 4
• 1 and 4 only

Consider the following statements regarding the advantages of apomixis:

1. It segregates characters in the progeny.
2. It allows the production of hybrid seeds that are genetically uniform.
3. Farmers can reuse seeds from apomictic hybrids year after year.
4. It increases the cost of hybrid seed production.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1 and 2
• 2 and 3
• 3 and 4
• 1 and 4

Consider the following statements regarding the female gametophyte (embryo sac):

1. It is formed by meiotic divisions of the functional megaspore.
2. It is 7-celled and 8-nucleate at maturity.
3. The large central cell has two polar nuclei.
4. The synergids have cellular thickenings called the filiform apparatus.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 2, 3 and 4
• 1, 3 and 4
• 1, 2, 3 and 4

Consider the following statements regarding pollen allergy:

1. It can cause chronic respiratory disorders like asthma.
2. Parthenium (carrot grass) is a common cause of pollen allergy.
3. Parthenium was introduced in India as a contaminant in imported rice.
4. It has become ubiquitous in occurrence in India.

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 3 only

Consider the following statements regarding the ploidy of different structures:

1. The cells of the nucellus are diploid (2n).
2. The functional megaspore is haploid (n).
3. The cells of the tapetum are haploid (n).
4. The Primary Endosperm Nucleus is triploid (3n).

Which of the above statements are correct?

[Sexual-Reproduction-in-Flowering-Plants] [class-xii]

• 1, 2 and 3
• 1, 2 and 4
• 2, 3 and 4
• 1 and 3 only