Home
Class 12
BIOLOGY
(A) Number and codes are assigned to few...

(A) Number and codes are assigned to few of the selected characters in numerical taxonomy.
(B) Phylogenetic classification system are based on evolutionary relationships between the various organisms.
(C ) Cytotaxonomy is based on cytological information like chromosome number, structure & behaviour.

A

A and B are incorrect

B

Only C is correct

C

Only A is incorrect

D

B and C are incorrect

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate the three statements provided and determine their correctness based on our understanding of the respective classification systems in biology. ### Step-by-Step Solution: 1. **Evaluate Statement A**: - Statement A claims that "Number and codes are assigned to few of the selected characters in numerical taxonomy." - In numerical taxonomy, all observable characters of organisms are assigned specific numbers and codes for classification purposes. Therefore, this statement is incorrect because it suggests that only a few characters are coded, which is not true. 2. **Evaluate Statement B**: - Statement B states that "Phylogenetic classification systems are based on evolutionary relationships between the various organisms." - This statement is accurate. Phylogenetic classification indeed focuses on the evolutionary relationships and lineage of organisms, making this statement correct. 3. **Evaluate Statement C**: - Statement C asserts that "Cytotaxonomy is based on cytological information like chromosome number, structure, and behaviour." - This statement is also correct. Cytotaxonomy relies on cytological data, which includes chromosome number, structure, and behavior, to classify organisms. 4. **Conclusion**: - From the evaluations, we conclude that: - Statement A is incorrect. - Statement B is correct. - Statement C is correct. - Therefore, the correct answer is that only Statement A is incorrect, while Statements B and C are correct. ### Final Answer: - A is incorrect, while B and C are correct.
Promotional Banner

Topper's Solved these Questions

  • PLANT KINGDOM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION -A (Objective Type Questions)|50 Videos
  • PLANT KINGDOM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION -B (Objective Type Questions)|35 Videos
  • PLANT KINGDOM

    AAKASH INSTITUTE ENGLISH|Exercise TEST YOURSELF|22 Videos
  • PLANT GROWTH AND DEVELOPMENT

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -D)|10 Videos
  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION-D) Assertion-Reason Type Questions|20 Videos

Similar Questions

Explore conceptually related problems

________classification systems were based on evolutionary relationships between various organisms.

Classification based on chromosome number, structure and behaviour is called

Assertion: Phylogenetic classification system provides more accurate arrangement of related taxa. Reason: Phylogenetic classification is based on evolutionary relationship between the various organisms.

Which taxonomy is based on following points- * chromosome number * chromosome structure * chromosome behaviour

Which of the following are correct for numerical taxonomy ? (i) Based on all observed characteristics. (ii) Uses chemical constituents of the plant to resolved confusion . (iii) Based on cytological information like chromosome number , structure and behavior . (iv) Number and codes assigned to a few characters. (v) At the same time , hundreds of characters can be considered . (vi) Carried out using computers .

The system of plant classification proposed by Carolus Linnaeus was artificial because : (a) he was not a naturalist (b) his classification was based on similarities and differences in floral and other morphological characters only (c) his classification was based on evolutionary relationships (d) he took into account the physiological relationships along with morphological observations

Select the incorrect pair (a) Numerical taxonomy-all observable characteristics (b). Cytotaxonomy-Cytological information (c). Chemotaxonomy-Chromosome number and structure (d). Cladistic taxonomy-Origin from a common ancestor

Assertion: In numerical taxonomy each character is given equal importance. Reason: It is quantitative arrangement based on computational and satisfied analyase of number and codes of the characters.

Comprehension In addition to the standar ring systems (such as cyclohexane), cyclic compounds can also be bicylic tricylic, etc. or they can be spirocyclic, bicyclic or bridge head carbons. The point of attachment of two rings are called bridge head atoms. The formal names of bicyclic and related ring system are based on (a) Total number of atoms in the molecule. (b) The number of atoms in each bridge connecting the bridge head atoms. These number are written square bracket in decreasing order. Spirocyclic compounds have two fused rings, but only one bridge head atom. Spirocyclic compounds and named like bicyclic compounds, but have the prefix spirocyclo. Answer the following question : Which of the following is the correct structure of bicyclo [1.1.0] butane?

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: Information like chromosome number structure and behaviour is used in cytotaxonomy. R: These become more important when there is no supporting fossil evidence.