Home
Class 12
BIOLOGY
In a pollen grain the small cell is spin...

In a pollen grain the small cell is spindle shaped, with dense cytoplasm is :-

A

Vegetative cell

B

Generative cell

C

Tube cell

D

All

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Pollen Grain Structure**: - Pollen grains are the male gametophytes of seed plants and consist of two main types of cells: the vegetative cell and the generative cell. 2. **Identifying the Small Cell**: - In the pollen grain, there is a small cell that is spindle-shaped with dense cytoplasm. This description matches the generative cell. 3. **Differentiating Between Cell Types**: - The vegetative cell is larger and has an irregular nucleus, while the generative cell is smaller, spindle-shaped, and has a spindle-shaped nucleus. 4. **Function of the Generative Cell**: - The generative cell undergoes mitosis to divide into two male gametes. This is a crucial step in the process of fertilization. 5. **Conclusion**: - Therefore, the small spindle-shaped cell with dense cytoplasm in a pollen grain is called the **generative cell**. **Final Answer**: The small cell in a pollen grain that is spindle-shaped with dense cytoplasm is called the **generative cell**. ---
Promotional Banner

Topper's Solved these Questions

  • REPRODUCTION IN ORGANISMS AND SEXUAL REPRODUCTION IN FLOWERING PLANTS

    ALLEN|Exercise EXERCISE-III (B) (ANALYTICAL QUESTION )|40 Videos
  • REPRODUCTION IN ORGANISMS AND SEXUAL REPRODUCTION IN FLOWERING PLANTS

    ALLEN|Exercise EXERCISE-IV (Assertion & Reason )|24 Videos
  • REPRODUCTION IN ORGANISMS AND SEXUAL REPRODUCTION IN FLOWERING PLANTS

    ALLEN|Exercise EXERCISE-II (AIIMS 2015)|5 Videos
  • REPRODUCTION IN ORGANISMS & SEXUAL REPRODUCTION IN FLOWERING PLANTS

    ALLEN|Exercise Question|53 Videos
  • REPRODUCTIVE HEALTH

    ALLEN|Exercise S|19 Videos

Similar Questions

Explore conceptually related problems

pollen grains

Intine of pollen grain is made of

Pollen grain of Capsella is

Select the correct combination of true and false for the given statements about pollen grain cells. (1) The vegetative cell has an abundant food reserve. (2) The vegetative cell has large irregularly shaped nucleus. (3) The generative cell is small and is fixed in the cytoplasm of the vegetative cells. (4) The generative cell is spindle - shaped and has dense cytoplasm .

Pollen grains are male gametes.

Study of pollen grain is called

Root region with thin-walled, small cells having dense cytoplasm is

Pollen grains are shed at

Study of pollen grains is

The ....cell is bigger , has abundant food reserve and a large irregularly shape nucleus. The ..... is small and has a spindle-shaped nucleus with dense cytoplasm.

ALLEN-REPRODUCTION IN ORGANISMS AND SEXUAL REPRODUCTION IN FLOWERING PLANTS-EXERCISE-III (A) (NCERT BASED QUESTIONS)
  1. In over 60% of angiosperms pollen grains are shed at

    Text Solution

    |

  2. Pollen grains of many species cause severe allergies & bronchial affli...

    Text Solution

    |

  3. In a pollen grain the small cell is spindle shaped, with dense cytopla...

    Text Solution

    |

  4. A typical angiosperm embryosac at maturity is :-

    Text Solution

    |

  5. Arising from the placenta are the megasporangia, commonly called:

    Text Solution

    |

  6. A large shield shaped cotyledon found in some monocotyledonous seeds i...

    Text Solution

    |

  7. In grasses, epicotyl has a shoot apex & a few leaf primordia enclosed ...

    Text Solution

    |

  8. Cleistogamous flowers are

    Text Solution

    |

  9. Although in most of species fruits are result of fertilisation, there ...

    Text Solution

    |

  10. Non-albuminous seeds occur in

    Text Solution

    |

  11. Persistent nucellus in the seed is known as

    Text Solution

    |

  12. Coconut water from a tender coconut is

    Text Solution

    |

  13. Fusion of one of the male gametes with egg nucleus is referred to as

    Text Solution

    |

  14. Endosperm of angiosperm is :-

    Text Solution

    |

  15. Transfer of pollen grains from the anther to the stigma of another flo...

    Text Solution

    |

  16. Perisperm is present in

    Text Solution

    |

  17. The part of pistil which acts as landing platform for pollen grain is

    Text Solution

    |

  18. The innermost wall layer of pollen sac is tapetum. Its function is in

    Text Solution

    |

  19. Two non motile male gametes in angiosperms are produced by :-

    Text Solution

    |

  20. Part of Castor seed that yields oil is (a) Caruncle (b) Endsoperm ...

    Text Solution

    |