Home
Class 12
BIOLOGY
Consider the following four statements (...

Consider the following four statements (a-d) and select the option which includes the correct ones only ?
(a) Floral or reproductive characters are less conservative as compared to vegetative characters.
(b) Gross morphology is not considered in natural nonphylogenetic classification.
(c) Tautonyms are valid in plant nomenclature.
(d) Scientific names should be derived from Latin or Greek language.

A

Statements b, c, d

B

Statements a, b

C

Statments b, d

D

Statement d

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Consider the following four statements (a-d) and select the option which includes all the correct ones only? (a) Genus is a group of related species which has more characters in common in comparison to species of other genera. (b) Classification is not a single step process. (c) Solanum, Petunia and Datura are placed in family convolvulaceae (d) Taxonomic categories are both distinct biological entities and morphological aggregates.

Consider the following four statements (a-d) and select the option which includes all the correct ones only :- (a) All the time of inspiration , contraction in diaphragm and external intercostal muscles take place. (b) Normal breathing is also called as abdominal breathing. (c ) Expiration during sneezing, coughing, yoga is normal expiratio during which IICM and abdominal muscles relax. (d) Inspiration can occur if the pressure within lungs (intra pulmonary pressure) is more than the atmospheric pressure.

Consider the following four statements (A-D) and select the option which includes all the correct ones only : - (A) Ability of the host to fight the disease causing organisms conferred by the immune system is called allergy (B) Highly intensified secondary immune response is also called as anamnestic response (C) Innate immunity is characterised by memory (D) Each antibody molecule has two light polypeptide chains

Consider the following four statement (1-4) and select the option which includes all the correct ones only (1) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc (2) Body weight-wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins then the cows pe day (3) Common button mushrooms are a very rich source of vitamin C (4) A rice variety has been developed which is very rich in calcium

Read the following statements carefully and choose the option including correct statements only (a) cranial nerves are motor in nature. (b)Lumbar plexus innervates chest and arms. (c) Lateral movements of eye are controlled by 3rd cranial nerve. (d)Cauda equina is a bunch of only cranial nerves which exit at the level of last sacral vertebra.

Consider the following four statements (A-D) and select the correct option stating which ones are true (T) and which ones are False (F). (A) Vertical distribution of different species occupying different levels in a community is called stratification. (B) Net primary productivity minus respiration losses is the gross primary productivity. (C) Rate of biomass production is called decompostion. (D) Annual net primary productivity of oceans is 55 billion tons.

Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) The scrotum acts as a thermoregulator, maintaining the testes at a temperature 2^(@) lower than that of the body (ii) Corona radiate layer of the ovum prevents polyspermy. (iii) Middle part of ear is derived from the endoderms layer. (iv) The hormone, human chorionic gonadotropin facilitates parturition by softening the connective tissue of the public symphysis.

Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) The scrotum acts as a thermoregulator, maintaining the testes at a temperature 2^(@) lower than that of the body (ii) Corona radiate layer of the ovum prevents polyspermy. (iii) Middle part of ear is derived from the endoderms layer. (iv) The hormone, human chorionic gonadotropin facilitates parturition by softening the connective tissue of the public symphysis.

Given below are four statement (a-d) regarding assisted reproductive technologies : Select the option which include one only : (a) ZIFT - The zygote or early correct one (only blastomere) transferred into the fallopian tube (b) ICSI - A sperm is directly injected into the fallopian tube to form an embryo in the laboratory (c) IUI - The semen collected either from the husband or healthy donor is artificially introduced either into the vargina or into the uterus (d) GIFT - Transfer of zygote collected from a donor into the fallopian tube of another female who cannot produce one but can provide suitable environment for fertilisation and development.

Consider the following statements with respect to the flowering plants and choose the correct option (a) Pollen grains represent the male gametes (b) Functional megaspore develops innto embryo sac that represents the female gamete (c) Transfer of pollen grains from anther to stigma of different plant is known as xenogamy (d) Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy

ALLEN-TEST PAPER 4-BIOLOGY
  1. Mangifera indica Linn. is a name of a plant species. In this name the ...

    Text Solution

    |

  2. Linnaeus wrote artificial classification of plants in his book. What i...

    Text Solution

    |

  3. Consider the following four statements (a-d) and select the option whi...

    Text Solution

    |

  4. Which of the following criteria for five kingdom classification was no...

    Text Solution

    |

  5. Match the terms with related functions or terms:-

    Text Solution

    |

  6. Which of the following statements are correct?

    Text Solution

    |

  7. The most correct definition of genus may be :-

    Text Solution

    |

  8. which of the following structure is present only in prokaryotic cell ?

    Text Solution

    |

  9. Ammonia(A)tonitrite(B)nitrate What are (A) & (B) in the given process ...

    Text Solution

    |

  10. The wall of bacteria consists of

    Text Solution

    |

  11. Each statement of the key is calle

    Text Solution

    |

  12. Match column-I with column-II and select the correct option. {:("Col...

    Text Solution

    |

  13. In 5-kingdom classification, the kingdom that includes the blue-green ...

    Text Solution

    |

  14. Consider the following statements regarding bilogical classification ...

    Text Solution

    |

  15. Find the incorrect statement from the following

    Text Solution

    |

  16. Eight identical droplets each falling under gravity in the earth's atm...

    Text Solution

    |

  17. The total number of species, that are known and described , range betw...

    Text Solution

    |

  18. The cell wall of fungi is made up of

    Text Solution

    |

  19. A special membranous structure which is formed by the extensions of pl...

    Text Solution

    |

  20. Every year new species have been dicovered. In the nature, the discove...

    Text Solution

    |