Home
Class 12
BIOLOGY
In some seeds such as black pepper and b...

In some seeds such as black pepper and beet nucellus may be persistent. Such nucellus is known as :

A

Chalaza

B

Perisperm

C

hilum

D

Tegmen

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SEXUAL REPRODUCTION IN FLOWERING PLANTS

    KUMAR PRAKASHAN|Exercise Section -E (Solution of NCERT Exemplar)(Long Answer Type Question)|3 Videos
  • REPRODUCTIVE HEALTH

    KUMAR PRAKASHAN|Exercise Section - F Multiple Choice Questions (MCQs)|102 Videos
  • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

    KUMAR PRAKASHAN|Exercise SECTION -F (Multiple Choice Questions (MCQs)) (MCQs Asked In Competition Exam)|63 Videos

Similar Questions

Explore conceptually related problems

After ferilisation, the seed coats of seeds develop from (A) ovule (B) chalaza (C) integuments (D) nucellus

From below, identify the group consisting of Perisperm. (A) Black pepper, Beet (B) Black pepper, Pea (C) Beet, Gram (D) Pea, Bean

The ovule is attached to the placenta by a small stalke which is known as (A) Hilum (B) Funicle (C) Nucellus (D) Chalaza

According to Stefan's law of radiation, a black body radiates energy sigmaT^(4) from its unit surface area every second where T is the surface temperature of the black body and sigma=5.67xx10^(-8)W//m^(2)K^(4) is known as Stefan's constant. A nuclear weapon may be thought of as a ball of radius 0.5 m. When detonated, it reaches temperature of 10^(6) K and can be treated as a black body. Estimate the power it radiates.

According to Stefan's law of radiation, a black body radiates energy sigmaT^(4) from its unit surface area every second where T is the surface temperature of the black body and sigma=5.67xx10^(-8)W//m^(2)K^(4) is known as Stefan's constant. A nuclear weapon may be thought of as a ball of radius 0.5 m. When detonated, it reaches temperature of 10^(6) K and can be treated as a black body. If all this energy U is in the form of radiation, corresponding momentum is p=U/c . How much momentum per unit time does it impart on unit area at a distance of 1 km ?

According to Stefan's law of radiation, a black body radiates energy sigmaT^(4) from its unit surface area every second where T is the surface temperature of the black body and sigma=5.67xx10^(-8)W//m^(2)K^(4) is known as Stefan's constant. A nuclear weapon may be thought of as a ball of radius 0.5 m. When detonated, it reaches temperature of 10^(6) K and can be treated as a black body. If surrounding has water at 30^(@)C , how much water can 10% of the energy produced evaporate in 1 s ? [S_(w)=4186.0" J/kg K and "L_(v)=22.6xx10^(5)" J/kg"] .

KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -F (Multiple Choice Questions)
  1. The ovule of angiosperm equals to what?

    Text Solution

    |

  2. By which agents is pollination carried out in Eichhornia and Lotus? (...

    Text Solution

    |

  3. In majority angiosperms…… (A) There are filiform apparatus in egg cel...

    Text Solution

    |

  4. Which of the following statement is not true? (A) Insects which consu...

    Text Solution

    |

  5. By what name is cotyledon of maize seed is known ?

    Text Solution

    |

  6. The front end of filament is connected to what?

    Text Solution

    |

  7. Which process is associated in seed formation without fertilisation in...

    Text Solution

    |

  8. Which of the following is not correct? (A) outer layer of pollen gra...

    Text Solution

    |

  9. Double fertilisation is a unique characteristics of which plant? (A) ...

    Text Solution

    |

  10. Functional megaspore develops into…. In gymnosperms (A) Ovule (B) E...

    Text Solution

    |

  11. A dioecious flowering plant prevents both ….. (A) Self fertilisation ...

    Text Solution

    |

  12. Attractants and rewards are required for (A) anemophily (B) entomop...

    Text Solution

    |

  13. Pollen grains can be stored for several years in liquid nitrogen havin...

    Text Solution

    |

  14. Which one of the following plants shows a very close relationship with...

    Text Solution

    |

  15. Double fertilization is

    Text Solution

    |

  16. Which of the following has proved helpful in preserving pollen as foss...

    Text Solution

    |

  17. The phenomenon observed in some plants where in parts of the sexual ap...

    Text Solution

    |

  18. Which one of the following statements regarding post-fertilization dev...

    Text Solution

    |

  19. In some seeds such as black pepper and beet nucellus may be persistent...

    Text Solution

    |

  20. What is the fate of the male gametes discharged in the synergid? (A) ...

    Text Solution

    |