Cytological Information

Q. Cytotaxonomy includes the study of:
I. Chromosome number
II. Number of observable characteristics
III. Chromosomal behaviour
IV. Chromosome morphology

1. Only I, III and IV
2. Only I, II and IV
3. Only I and II
4. Only II and III

Q. Karyotaxonomy is the modern branch classification that is based on

1. number of chromosomes
2. bands found on chromosomes
3. organic evolution
4. trinomial nomenclature

Q. A chromosome whose terminal centromere is capped by telomere is–

1. Metacentric
2. Telocentric
3. Submetacentric
4. Acrocentric

Q. Choose the incorrect pair of chromosome type and the position of centromere in the chromosome:

1. Acrocentric: Centromere near one end of the chromosome
2. Metacentric: Centromere at the centre of the chromosome
3. Submetacentric: Centromere nearby the centre of the chromosome
4. Telocentric: Centromere at one end of the chromosome

Q. Isogametes of Cladophora are:

1. Biflagellate
2. Multiflagellate
3. Quadriciliate
4. Quadriflagellate

Q.

What is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.

Q. Identify the correct match between the type of chromosomes and the position of the centromere.

$\begin{array}{cc}\text{Chromosomes}& \text{Position of centromere}\\ \text{(A) Metacentric}& \text{(1) At the tip}\\ \text{(B) Telocentric}& \text{(2) Almost near the tip}\\ \text{(C) Acrocentric}& \text{(3) At the middle}\\ \text{(D) Submetacentric}& \text{(4) Slightly away from the middle}\end{array}$

1. (A)-(1), (B)-(2), (C)-(3), (D)-(4)
2. (A)-(2), (B)-(4), (C)-(3), (D)-(1)
3. (A)-(3), (B)-(1), (C)-(2), (D)-(4)
4. (A)-(3), (B)-(2), (C)-(1), (D)-(4)

Q. In the classification of plants, the term cladistics refers to the

1. Phylogenetic classification
2. Sexual classification
3. Artifical classification
4. Binomial classification
5. Natural classification

Q. State whether the following statements are true or false.
During classification, species are distinguished, named and grouped into genera based on correlated characteristics.

1. True
2. False

Q. Interbreeding natural population of animals are referred to as belonging to the same

1. Family
2. Species
3. Genus
4. Variety

Q. Of all things that distinguish man is his brain the most important of the animal kingdom from the rest
P Q R S
Which one of the following is the correct sequence?

1. S-R-Q-P
2. Q-P-S-R
3. S-R-P-Q
4. R-S-Q-P

Q. The structures that line up the chromosomes on the equatorial plate during metaphase are called?

1. Asters
2. Polar and kinetochore microtubules
3. Centrosomes
4. Centrioles

Q.

Given below are certain biological terms. Write a single collecting term for each group.​
Sub-metacentric, telocentric, acrocentric

Q. Choose the incorrect pair of chromosome type and the position of centromere in the chromosome:

1. Metacentric: Centromere at the centre of the chromosome
2. Submetacentric: Centromere nearby the centre of the chromosome
3. Acrocentric: Centromere near one end of the chromosome
4. Telocentric: Centromere at one end of the chromosome

Q. Assertion :The same specific name can be given to organisms belongsing to different genera. Reason: Two organism of different species may have same specific names.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Which of the following system of classification utilizes results from numerical, chemotaxonomy and cytotaxonomy?

1. Natural system of classification
2. Natural system of classification
3. Phylogenetic system of classification
4. None of the above

Q. Classification based on comparison of number of ovaries, stamens present in the flower is called as

1. Natural system of classification
2. Artificial system of classification
3. Phylogenetic system of classification
4. All of the above

Q. The basic unit of classification is

1. Genus
2. Family
3. Species
4. Phylum

Q. The system of classification proposed by Bentham and Hooker is a

1. Artificial
2. Natural
3. Phylogenetic
4. Numerical

Q. Monocystis belongs to the order of

1. Microsporidia
2. Coccidia
3. Gregarinida
4. Sarcosporidia

Q. The nomenclatural type of a specimen selected by the author as substitute of a lost material on which the name of the taxon is base is called.

1. Syntype
2. Neotype
3. Lectotype
4. Paratype