Home
Class 12
BIOLOGY
Read the following statements :- (1) I...

Read the following statements :-
(1) In bryophytes true root, stem and leaves are absent.
(2) In Cycas, male cones and megasporophylls are borne on different trees.
(3) Stem of Cycas is branched and of Pinus and Cedrus is unbranched.
(4) In gymnosperms, generally tap roots are found. Select the correct statements:

A

a, b

B

a,b,d

C

a,b,c

D

c,d

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Read the following statements :- (1) Genetic Variability is the root of all breeding programs. (2) Induced mutations are useful when desired alleles are absent in germplasm. (3) Conventional breeding is not constrained by availability of limited number of genes. (4) Other breeding methods that are used selection amongst somaclonal variants and genetic engineering. How many of the above statements are correct ?

Some statements are given below :- (a) In gymnosperms the male and the female gametophytes do not have an independent free-living existence (b) In Cycas foliage leaves are pinnately compound (c) The stems are branched in Pinus and Cedrus (d) In Pinus, male cones and female cones are borne on different trees. Out of them, which statements are correct ?

Read the following statement regarding bryophytes and select the correct answer. (i). Bryophytes lack true roots, stem and leaves. (ii). The main plant body is haploid (iii). Sex-organs are unicellular and non-jacketed (iv). Fertilisation produces an embryo inside the water.

Consider the following four statements whether they are correct or wrong. (A) The sporophyte in liverworts is more elaborate than that in mosses. (B) Salvinia is heterosporous. (C ) The life cycle in all seed-bearing plants is diplontic. (D) In Pinus, male and female cones are borne on different trees. The two wrong statements together are

Consider the following four statements whether they are correct or wrong. (A) The sporophyte in liverworts is more elaborate than that in mosses. (B) Salvinia is heterosporous. (C ) The life cycle in all seed-bearing plants is diplontic. (D) In Pinus, male and female cones are borne on different trees. The two wrong statements together are

Read the following statements w.r.t. pteridophytes (a) they are soil binders (b) first terrestrial plants (c) first tracheophytes (d) dominant phase is differentiated into true stem, leaves and roots (e) sporophyte is an independent plant choose the correct answer.

Consider the following statements 1. In climacteric fruits, ethylene production is high. 2. Gibberellin present in a healthy stem causes some of the new cells to differ- entiate as phloem. 3. Loss of turgor in leaves stimulates the production of abscisic acid. Which of the statements given above are correct?

Read the following statements about WBCs and select the correct option 1) Lymphocytes are responsible for immune responses of the body 2) Basophils are least in number among white blood cells. 3) Eosinophils can engulf antigen-antibody complexes 4) Monocytes are the only phagocytic ceils of blood so that they are waited internal scavengers.

In pteridophytes, main plant body is _(i)__, which is __(ii)__ into true roots, stem and leaves fill the blanks in above statements and select the correct option

Read the following statements and select the correct option, Statement 1 : Many pants are propagated vegetatively even though they bear seeds. Statement 2 : Sweet potatoes multiply vegetatively by root tubers.

ALLEN-TEST PAPER 3-BIOLOGY
  1. Match the columns I, II and III, and choose the correct combination fr...

    Text Solution

    |

  2. Recognize the figure and find out the correct matching :- (1) a-arc...

    Text Solution

    |

  3. Rhizoids of Funaria are

    Text Solution

    |

  4. Recognise the figure and find out the correct matching :-

    Text Solution

    |

  5. Fern gametophyte bears

    Text Solution

    |

  6. Which one of the following bryophytes has stomata present in the sporo...

    Text Solution

    |

  7. Match the columns I and II, and choose the correct combination from th...

    Text Solution

    |

  8. Match the columns I and II, and choose the correct combination from th...

    Text Solution

    |

  9. Recognise the figure and find out the correct matching:-

    Text Solution

    |

  10. In gymnosperms, the ovule is naked because :-

    Text Solution

    |

  11. Cycas have two cotyledons but not included in angiosperms because of

    Text Solution

    |

  12. In pinus, male and female cones occur on

    Text Solution

    |

  13. Angiosperms have dominated the land flora primarily because of their

    Text Solution

    |

  14. Read the following statements :- (1) In bryophytes true root, stem a...

    Text Solution

    |

  15. Consider the following statements regarding gymnosperms (A) In gymno...

    Text Solution

    |

  16. Recognise the figure and find out the correct matching :-

    Text Solution

    |

  17. A dominant , independent, photosynthetic, thalloid or erect body is re...

    Text Solution

    |

  18. Select the wrong statements:-

    Text Solution

    |

  19. Vascular plants lacking vessels and companion cells are

    Text Solution

    |

  20. Match the colums I and II, and chollse the correct combination from th...

    Text Solution

    |