Home
Class 12
BIOLOGY
Fill the blanks in the given statements ...

Fill the blanks in the given statements and select the correct option
A. The developmetnal stage of an animal passed in the mother's womb is called (i).____
(ii). The outer layer of blastula is called (ii). _____. It does nt take part in the formation of (iii). ______
C. (iv)._____ is the first germ layer formed from the inner cell mass by differentiation.

A

(ii)-mesoderm, (iii)-embryo proper (iv)-ectoderm

B

(i)-embryo, (ii)-trophoblast, (iii)-embryo proper

C

(i)-egg, (iv)-endoderm

D

(i)-embyo- (iv)- ectoderm

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • HUMAN HEALTH AND DISEASE

    NCERT FINGERTIPS|Exercise Human Health And Disease|177 Videos
  • MICROBES IN HUMAN WELFARE

    NCERT FINGERTIPS|Exercise Microbes In Human Welfare|138 Videos

Similar Questions

Explore conceptually related problems

Fill in the blanks : The outer layer of blastule is called …………. . It does not take part in the formation of embryo proper .It gives rise the ………….. Membranes .

Fill in the blanks and select the correct option. (i) Coloured plastids are called ____ (ii) Nuclear region of a prokaryotic cell is called ____ (iii) Movement of water across the cell membrane takes place by the process of ____

Read the following statements (A-C) and select the option which correctly fills up the blanks in any two statements. A. ____(i)___ nutrients are required in large quantity and called ____(ii)____ B. Kharif crops are cultivated from ____(iii)_____ to ____(iv)____. C. Berseem is an important ___(v)____ crop.

Fill up the blanks in the following paragraph by selecting the correct option. During copulation (coitus) semen is released by the penis into the vagina and is called (i)._____.the ovum released by the ovary is transported to the (ii)._____where (iii).______takes place during fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of (iv)._____The secretions of the (v)._____help the sperm enter into the cytoplasm of the ovum.

Refer to the given statements and select the option that correctly fill the blanks. I. In __(i) __ and __(ii)__ , the immune system starts destroying body's own proteins. II. __(iii)__ is the maligent growth of tissues derived from primitive mesoderm. (III) __(iv)__ was the first drug used for the treatment of AIDS.

Refer to the given statements and select the correct ones. (i) Fossils are remains of hard parts of life forms in rocks. (ii) Dinosaurs disappeared about 65 mya. (iii) Animals called lobe fins evolved into reptiles. (iv) Study of fossils is called palaentology.

Given below are four statements each with one or two blanks. Select the option which correctly fills up the blanks in any two statements. (A). The embryo with 8 to 16 blastomeres is called a (i)._____ (B). Embedding of the (i)._____ in the endometrium of the uterus is called implantation and it leads to (ii). ______ (C). After implantation finger like projections appear on the trophoblast called (i)._____ which are surrounded by the (ii)._____ abnd maternal blood. (D). Inner cell mass contains certain cells called (i)._____ cells which have the potency to give rise to all the tissues and organs.

Consider the following statements (A to C) each with one or two blanks Statements (A) The capacity to generated a whole plant from any cell/explant is called___ (i)___. (B) Transfer of resistance genes is achieved by ____(ii)____ between the target and the source plant followed by ____(iii)_____ (C ) The rice vaireties IR8 were developed in ____(iv)____.

NCERT FINGERTIPS-HUMAN REPRODUCTION-Human Reproduction
  1. Given below are four statements each with one or two blanks. Select th...

    Text Solution

    |

  2. Identify the correctly matched pair/pairs of the germ layers and their...

    Text Solution

    |

  3. Fill the blanks in the given statements and select the correct option ...

    Text Solution

    |

  4. The structures derived from extoderm are (i). Pituitary gland (ii)...

    Text Solution

    |

  5. Gastrula is the embryonic stage in which

    Text Solution

    |

  6. In the development of the human body, the ectoderm is responsible for ...

    Text Solution

    |

  7. Slect the option that correctly fills up the blanks in the given parag...

    Text Solution

    |

  8. The first movements of the fetus and appearance of hair on its head ar...

    Text Solution

    |

  9. The early stage human embryo distinctly possesses

    Text Solution

    |

  10. Deliver of developed fetus is scientifically called

    Text Solution

    |

  11. Match column I with column II and select the correct option from the c...

    Text Solution

    |

  12. In human adult females, oxytocin

    Text Solution

    |

  13. Match column I (terms) with column II (definitions) and select the cor...

    Text Solution

    |

  14. Mathc column I with column II and select the correct option from the c...

    Text Solution

    |

  15. Consider the following four statements and select the correct option s...

    Text Solution

    |

  16. Read the following statements carefully and select the correct statem...

    Text Solution

    |

  17. The third stage of parturition is called " after-birth". In this stage

    Text Solution

    |

  18. Given below are three statements each with one or two balnks select th...

    Text Solution

    |

  19. Mathc column I with column II and select the correct option from the c...

    Text Solution

    |

  20. After birth, colostrum is released from mammary glands which is rich i...

    Text Solution

    |