The Question is from neet-botany sexual-reproduction-in-flowering-plants apomixis-and-polyembryony, and it was created by the author B VENKAT

Question

In a species exhibiting pseudogamy, the pollen is essential for:

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Pseudogamy and its role in plant reproduction
 **Related Topics**: Apomixis, parthenogenesis, pollination, fertilization
 **Prerequisites**: Understanding of sexual and asexual reproduction in plants, the roles of pollen and endosperm in seed development.
## SOLUTION PATHWAY
**Given Information**:
  The species exhibits pseudogamy.
  Pseudogamy is a type of apomixis where fertilization is required for seed development, but the sperm nucleus does not fuse with the egg nucleus.
**Method & Steps**:
 1. Understand Pseudogamy:
  Reasoning: Pseudogamy is a form of apomixis where the egg develops into an embryo without fertilization, but the presence of pollen is still necessary for seed development.  The pollen triggers the development of the surrounding tissues, even though the sperm doesn't fuse with the egg.
  Formula/Rule: None directly applicable, this is a conceptual understanding.
 2. Identify the pollen's role:
  Working: While the pollen doesn't directly fertilize the egg, it initiates the development of the endosperm, a nutritive tissue crucial for embryo development within the seed. The stimulus provided by the pollen is essential for this process to occur.
  Key Point:  The embryo itself develops parthenogenetically (without fertilization).  However, endosperm development is still dependent on pollen.
 3. Determine the correct option:
  Result: The pollen is essential for endosperm development in pseudogamy.
  Verification: The definition of pseudogamy directly supports this conclusion.  Without the pollen stimulus, even though the egg develops without fertilization, the endosperm would not form, and the seed would not develop.
 ## OPTION ANALYSIS
A :x: Embryo development is parthenogenetic; it doesn't require sperm fusion.
B ✓: Endosperm development requires a stimulus from the pollen, even in pseudogamy.
C :x: Seed coat formation is a consequence of seed development but not directly dependent on pollen in pseudogamy,  the stimulus triggering endosperm development is what is crucial.
D :x: Fruit development is generally hormonal and not directly dependent on pollen in pseudogamy; the development is triggered by other factors.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing pseudogamy with true sexual reproduction:  Remembering that pseudogamy is a form of apomixis where fertilization is not required for embryo development is critical.
  2.Assuming pollen is only needed for fertilization: understanding that pollen can provide developmental signals independent of fertilization is key.
 **Quick Tips**:
  1.Remember the key feature of pseudogamy:  fertilization is not required for embryo development, but it is required for seed development.
  2.Visualize the process: Imagine the pollen providing a signal that triggers the necessary developmental pathways for endosperm formation.

B VENKAT · Answer

Embryo development

B VENKAT · Answer

The correct Option is "Endosperm development"

B VENKAT · Answer

Seed coat formation

B VENKAT · Answer

Fruit development

NEET Botany Sexual Reproduction in Flowering Plants Apomixis And Polyembryony MCQs

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